用户:Johnzheng/Sandbox

小埃里克·欣普顿·霍尔德 Eric Himpton Holder, Jr.
第82任美国司法部长
现任
就任日期 2008年2月3日
总统	巴拉克·欧巴马
前任	迈克尔·穆凯西
美国司法部副部长
任期 1997年6月13日—2001年1月20日
总统	比尔·克林顿
前任	杰米·戈雷利克
继任	拉里·汤普森
华盛顿特区检察官
任期 1993年10月、—1997年6月13日
提名	比尔·克林顿
前任	J·拉姆齐·约翰逊
哥伦比亚特区高级法院助理法官
任期 1988年10月—1993年10月
提名	罗纳德·里根
个人资料
出生	(1951-01-21) 1951年1月21日 纽约州纽约市
政党	美国民主党
配偶	Sharon Malone, M.D.
母校	哥伦比亚大学 (文学学士, B.A) 哥伦比亚大学 (法律博士, J.D)
专业	律师
宗教信仰	美国圣公会

小埃里克·欣普顿·霍尔德（Eric Himpton Holder, Jr.，1951年1月21日—），美国政治家，民主党人，曾任比尔·克林顿内阁司法部副部长（1997年-2001年）和代理美国司法部长（2001年），现任（第82届）美国司法部长（2009年至今）。是美国历史上第一任非裔美籍的司法部长 。毕业于曼哈顿知名的史岱文森高中，并于1972年进入哥伦比亚大学就读，1976年取得该校法律博士(J.D.)学位。

在就任司法部长之前，霍尔德曾经担任过哥伦比亚特区高等法院的法官、联邦检察官、美国司法部副部长，并曾在 科文顿•柏灵律师事务所任职。在2008年美国总统大选中，他是巴拉克·奥巴马的高级法律顾问，及副总统候选人选举委员会的成员。、

早年生活

小埃里克·欣普顿·霍尔德出生在纽约布朗克斯区的一个巴巴多斯裔家庭。霍尔德的父亲，老埃里克·欣普顿·霍尔德（Eric Himpton Holder, Sr. ,1905–1970）出生于巴巴多斯的圣约瑟夫区，于11岁时来到美国，他后来成为了一名地产经纪人。 小霍尔德的母亲，米里亚姆，生于新泽西，他的外祖父母也是巴巴多斯裔移民。 霍尔德在纽约皇后区的东埃尔姆赫斯特长大，并进入了当地一所公立学校学习，直到4年级的时候被一个优秀学生选拔计划所选中。1969年，他从曼哈顿著名的史岱文森高中毕业，并被哥伦比亚大学录取。他进入了哥伦比亚大学的哥伦比亚学院学习，并于1973年获得了美国史的文学学士 学位。1976年，他于哥伦比亚大学法学院获得了法律博士学位。在博士期间，他分别在全国有色人种协进会法律保护和教育基金会（NAACP Legal Defense and Educational Fund）和联邦检察官的岗位上任职过。

职业生涯

从法学院毕业后，霍尔德进入了美国司法部新成立的公共廉正处（Public Integrity Section），并在那里工作到了1988年。在这段时间里，他, he assisted in the prosecution of 民主党众议员 Congressman John Jenrette for bribery discovered in the Abscam sting operation.1988年，时任美国总统的罗纳德·里根将他任命为哥伦比亚特区高等法院的一名法官 。 Holder stepped down from the bench in 1993 to accept an appointment as United States Attorney for the 华盛顿特区 from President 比尔·克林顿. He was the first African-American U.S. Attorney in that office. At the beginning of his tenure, he oversaw the conclusion of the corruption case against Dan Rostenkowski, part of the Congressional Post Office scandal. He was a U.S. Attorney until his elevation to 司法部副部长 in 1997. Holder also served on 乔治华盛顿大学's Board of Trustees in 1996 and 1997.

司法部副部长

In 1997, after the retirement of Jamie Gorelick, Clinton nominated Holder to be the 司法部副部长 under Janet Reno. Holder was confirmed several months later in the Senate by a unanimous vote. During his confirmation hearing, Holder's opposition to the death penalty was questioned, but he pledged his intention to cooperate with the current laws and Reno, saying, "I am not a proponent of the death penalty, but I will enforce the law as this Congress gives it to us." Holder was the first African-American to serve in that position. Holder briefly served as Acting Attorney General under President George W. Bush until the Senate confirmed Bush's nominee John Ashcroft.

Deputy Attorney General Eric Holder opened an Interagency Working Group meeting of the White House Initiative on Asian Americans and Pacific Islanders hosted by the Department of Justice on October 18, 2000.

As 司法部副部长, Holder advised Reno about how far to go in the Justice Department's use of the Independent Counsel statute. Reno made the decision to permit Kenneth Starr to expand his investigation into the 莱温斯基事件, leading to Clinton's impeachment.

In his final days with the Clinton administration, Holder was involved with Clinton's last-minute pardon of fugitive and Democratic contributor Marc Rich. Between November 2000 and January 2001, Jack Quinn, Rich's lawyer and former White House Counsel from 1995–96, had been contacting Holder, testing the waters for the political viability of a presidential pardon. Quinn asked Holder for advice as to how he should proceed. According to Rich's attorney, Holder advised to circumvent standard procedures and to submit the pardon petition directly to the White House.

After presenting his case to Holder in a November phone call and a last minute January 17 letter, Quinn arranged a phone call between the White House and Holder, asking the 司法部副部长 to share his opinion on the Rich pardon. Holder gave Clinton a "neutral, leaning towards favorable" opinion of the pardon. The reporter Joe Conason contends that Rich's pardon was actually a favor from Clinton to members of the Israeli government, for which Clinton hoped to gain progress in the peace talks between 以色列 and 巴勒斯坦.

During his February testimonies before the House Government Reform Committee and Senate Judiciary Committee, Holder argued his phone call was not intended as a formal Justice Department blessing of the pardon, saying, "my interaction with the White House, I did not view as a recommendation. because I didn't have the ability to look at all the materials that had been vetted through the way we normally vet materials." He also did not believe his opinion would be interpreted as a go-ahead for the pardon. "What I said to the White House counsel ultimately was that I was neutral on this because I didn't have a factual basis to make a determination as to whether or not Mr. Quinn's contentions were in fact accurate, whether or not there had been a change in the law, a change in the applicable Justice Department regulations, and whether or not that was something that would justify the extraordinary grant of a pardon." An investigation led by House Government Reform Committee chairman Dan Burton concluded in a 2003 report covering 177 Clinton pardons that Holder had played a significant role in facilitating the Rich pardon, first by recommending the well-connected Jack Quinn to Rich's legal representatives, by failing to fully inform prosecutors of the pending pardon, and by eventually delivering a "neutral leaning favorable" opinion to Clinton from a position of authority. Holder has expressed some regret over his handling of the Rich pardon, stating "I wish I had done some things differently with regard to the Marc Rich matter. Specifically, I wish that I had ensured that the Department of Justice was more fully informed and involved in this pardon process", and called his own actions a "mistake".

Official photo as 司法部副部长, ca. 2000

Holder was also involved in Clinton's decision to reduce the criminal sentences of 16 members of the Boricua Popular Army, an organization that has been categorized by the 联邦调查局 as a terrorist organization. The clemency request was initially opposed in 1996 by U.S. Pardons Attorney Margaret Love. When Holder was elevated to 司法部副部长 in 1997, he was asked to reexamine the issue by three members of Congress. In July 1999, Holder recommended clemency to Clinton with a report from then U.S. Pardons Attorney Roger Adams that neither supported nor opposed clemency. A month later, Clinton granted clemency. According to The Hartford Courant, the grant of clemency was unusual because it was opposed by the FBI, the federal prosecutor and the victims. According to the newspaper, it was also unusual because before the commutations, the Boricua Popular Army members were not required to repudiate their actions and were not asked to provide any information concerning the whereabouts of Victor Manuel Gerena, a co-conspirator and one of the FBI Ten Most Wanted Fugitives, or the millions of dollars stolen by the group in a 1983 robbery of Wells Fargo in West Hartford, Connecticut.

Private practice

From 2001 until he became Attorney General, Holder worked as an attorney at Covington & Burling in Washington, D.C., representing clients such as Merck and the National Football League. He represented the NFL during its dog fighting investigation against Michael Vick.

In 2004, Holder helped negotiate an agreement with the Justice Department for Chiquita Brands International in a case that involved Chiquita's payment of "protection money" to the United Self-Defense Forces of Colombia, a group on the U.S. government's list of 恐怖分子 organizations. In the agreement, Chiquita's officials pleaded guilty and paid a fine of $25 million. Holder represented Chiquita in the civil action that grew out of this criminal case.

In March 2004, Holder and Covington & Burling were hired by Illinois Governor Rod Blagojevich to act as a special investigator to the Illinois Gaming Board. The Gaming Board had voted 4-1 earlier that month to allow a casino to be built in Rosemont, Illinois. That vote defied the recommendation of the board's staff, which had raised concerns about alleged organized-crime links to the Rosemont casino's developer. The move had also raised concerns that the governor had named his close friend and fund-raiser, Christopher Kelly, as a "special government agent" to be involved in official state negotiations about the casino. Holder's legal work for the State of Illinois never materialized when the board reversed its decision and refused to hire Kelly. The investigation was subsequently canceled on May 18, 2004.

The firm represented Guantanamo inmates but Holder "never participated directly in the firm's Guantanamo work", and is not expected to recuse himself from matters pertaining to it.

While D.C. v. Heller was being heard by the Supreme Court in 2008, Holder joined the Reno-led amicus brief, which urged the Supreme Court to uphold Washington, D.C.'s handgun ban and said the position of the Department of Justice, from Franklin Roosevelt through Clinton, was that the Second Amendment does not protect an individual right to keep and bear arms for purposes unrelated to a State’s operation of a well-regulated militia. Holder said that overturning the 1976 law "opens the door to more people having more access to guns and putting guns on the streets."

In 2008, Holder represented the wife of Robert Wone, victim of a controversial and unsolved 2006 murder.

Holder speaking at a press conference on Guantanamo Bay detainees

In late 2007, Holder joined then-United States Senator Barack Obama's presidential campaign as a senior legal advisor. He served on Obama's vice presidential selection committee.

Holder favors closing the Guantanamo Bay detention camp, although he said in 2002 that the detainees are not technically entitled to Geneva Convention protections. He is opposed to the Bush administration's implementation of the Patriot Act, saying it is "bad ultimately for law enforcement and will cost us the support of the American people." He has been critical of Enhanced interrogation techniques and the NSA warrantless surveillance program, accusing the Bush administration of a "disrespect for the rule of law... [that is] not only wrong, it is destructive in our struggle against terrorism."

就任司法部部长

On December 1, 2008, Obama announced that Holder would be his nominee for Attorney General. He was formally nominated on January 20, 2009 and approved by the Senate Judiciary Committee on January 28. Following his confirmation by the full Senate on February 2, 2009, he became the first African-American Attorney General of the United States. His installation took place on March 27, 2009 at the Lisner Auditorium of the George Washington University.

During his confirmation hearings in the Senate, Holder agreed with Senator Patrick Leahy, Democrat of Vermont, that a technique used by U.S. interrogators under the Bush administration known as waterboarding is torture. Holder was confirmed by a 75-21 vote on February 2, 2009.

Holder gave a speech on race relations on February 18, 2009, in the midst of Black History Month, in which he called the United States "a nation of cowards" on racial issues. "Though race-related issues continue to occupy a significant portion of our political discussion and though there remain many unresolved racial issues in this nation, we average Americans simply do not talk enough with each other about race," he said. The speech stirred mild controversy, with some reacting favorably to Holder's comments and others sharply criticizing them. Obama rebuked Holder's comments, saying that “I think it’s fair to say that if I had been advising my attorney general, we would have used different language”.

When questioned about weapons regulations during a news conference to announce the arrest of Mexican drug cartel members, Holder stated that the Obama administration would seek to re-institute the expired Assault Weapons Ban, which he strongly supports.

After the U.S. government filed suit against the Swiss bank UBS AG, whom Holder had represented during his time in private practice, the attorney general recused himself from all legal matters concerning the bank, which stands accused of conspiracy in U.S. tax fraud.

On April 1, 2009, Holder announced that he had ordered the dismissal of the indictment against former Senator Ted Stevens on corruption charges. Stevens had been found guilty, but hadn't been sentenced; Holder's action effectively vacated Stevens' conviction. Holder was reportedly very angry that the prosecutors had withheld potentially exculpatory evidence from Stevens' attorneys. After the prosecutors had been held in contempt of court for failing to turn over required documents, Holder replaced the entire trial team. Soon afterward, the Justice Department discovered a previously undocumented interview with Bill Allen, the prosecution's star witness. In this interview, Allen gave statements that directly contradicted his testimony at trial, including a claim that he'd been asked to get a note for a repair bill on his house. By nearly all accounts, Holder wanted to send a message that he would not tolerate any behavior he deemed to be prosecutorial misconduct.

Holder presented friend and predecessor Janet Reno, Attorney General under the Clinton Administration, the American Judicature Society's (AJS) Justice Award on April 17, 2009. The award is the highest given by the AJS, and recognizes significant contributions toward improvements in the administration of justice within the United States.

On November 13, 2009, Holder announced that accused September 11 attack conspirators Khalid Sheikh Mohammed, Ramzi Bin al-Shibh, Walid bin Attash, Ali Abdul Aziz Ali and Mustafa Ahmed al-Hawsawi would be transferred from the military commission system to the U.S. District Court for the Southern District of New York for trial. He also expressed confidence that an impartial jury would be found "to ensure a fair trial in New York".

Holder told the Senate Judiciary Committee on April 14, 2010, "No final decision has been made about the forum which Khalid Sheikh Mohammed and his co-defendants will be tried. As I said at the outset, this is a very close call."

However, in early April 2011 Holder announced that the 9/11 co-conspirators will be tried by a military tribunal. "Holder said that he believes the trials could have been held in New York or Virginia, but that Congress imposed restrictions on where the trial could be held, taking the decision from his hands."

In May 2010 Holder expressed "concerns" about "Arizona’s tough new immigration law", saying that it might "lead to racial profiling". Holder was criticized for his testimony during a House Judiciary Committee hearing, when he said that he had "not read" the Arizona law and that he had formed his opinions on the basis of news reports. In July 2010, Holder stated that the Justice Department filed suit against the Arizona law because it is preempted by federal law. Holder was quoted as saying, "I understand, first off, the frustration of the people of Arizona and the concerns that they have with regard to the amount of illegal immigration that occurs, but the solution that the Arizona legislature came up with is inconsistent with our federal Constitution."

In July 2010, Holder flew to Kampala, Uganda, to address the Heads of State Summit of the African Union, where he discussed the Obama Administration's priorities with regards to Africa and the terrorist bombings in Kampala during the World Cup.

Before the November 2010 elections, Holder stated that he planned to prosecute people in California if they possess marijuana even if Californian voters passed a proposition legalizing marijuana (Proposition 19). Proposition 19 was ultimately defeated.

After the United States diplomatic cables leak in December 2010, Holder said that "We have an active, ongoing, criminal investigation with regard to this matter," Holder said. "We are not in a position as yet to announce the result of that investigation, but the investigation is--is ongoing. To the extent that we can find anybody who was involved in the breaking of American law and who has put at risk the assets and the people that I have described, they will be held responsible," Holder said. "They will be held accountable." Holder's comments leave open a crucial question, which is whether the investigators are looking at how WikiLeaks obtained the documents (not unlike probing a news organization's source), or if they're looking at whether WikiLeaks staffers violated criminal law and should be the ones indicted.

In March 2011 Holder left open the possibility that the Guantánamo Bay terrorist prison camp might live on beyond President Obama’s first term. Asked in a congressional hearing whether the prison would be closed by November 2012, Holder said: "I don’t know". He said the Justice Department has established a task force to look at each of the 172 detainees being held at the Guantánamo prison to address how they should be dealt with. Holder’s comments come just weeks after CIA Director Leon Panetta told a Senate panel that Osama bin Laden would probably be shipped to and held at the Guantánamo Bay facility if he were captured.

争议

参见：New Black Panther Party voter intimidation case

In May 2009, Holder's Department of Justice ended a civil suit originally brought by the Bush administration against the New Black Panther Party, its chairman, and two of its members for voter intimidation due to their conduct during the 2008 election. Two members of the party had stood outside a polling station during the election in paramilitary uniforms, one of them carrying a billy club, and both shouted racial insults at white voters. Although none of the defendants appeared in court to contest the charges, the department of justice voluntarily dropped the charges against the party, its chairman, and one of the two members who had stood outside the polling station, and obtained a narrow injunction against the other. While the Department of Justice has contended that the charges were dropped due to lack of evidence, several of its current and former members have stated that Holder's Department of Justice is unwilling to prosecute minorities for civil rights violations. This accusation has been made most notably by J. Christian Adams, who in May 2010 resigned his post at the Department of Justice out of protest, and by his former supervisor Christopher Coates.

J. Christian Adams and another DOJ attorney, Hans von Spakovsky, have also accused the civil rights division in Holder's Department of Justice of inactivity and wastefulness. According to Adams and Spakovsky, although the voting section has hired dozens of new attorneys, the number of actual cases filed has declined sharply since Holder took office, and many of its employees spend their time "playing computer Solitaire, watching videos, and venting at the lack of activity."

Holder has faced additional controversy for the Obama Administration's decision that his Department of Justice would no longer enforce certain provisions of the Defense of Marriage Act, which Representative Frank Wolf has described as a "decision to abandon your duty to defend this law." During a meeting with a House subcommittee discussing this and other issues, Holder has argued that the behavior from the New Black Panther Party was not comparable to historical voter intimidation against minorities, stating "When you compare what people endured in the South in the ’60s to try to get the right to vote for African Americans, to compare what people subjected to that with what happened in Philadelphia… I think does a great disservice to people who put their lives on the line for my people." Critics have interpreted this comment as evidence of racial bias on Holder's part, arguing "If he approaches the job with the attitude that any group smaller than all Americans is 'my people,' he is the wrong man for the position."

个人生活

Holder is married to Dr. Sharon Malone, an 产科医生; the couple have three children. Malone's sister was Vivian Malone Jones, famous for her part in the 挡校门事件 which led to integration at the 阿拉巴马大学. Holder has been involved with various mentoring programs for inner-city youths. He is also an avid basketball fan.

荣誉

2009年6月，巴巴多斯政府宣布将由 announced that it would begin a project to determine the first 100 Great Barbadians which would be selected among the public of 巴巴多斯. At the announcement of the project it was announced that Eric Holder was the first candidate to be nominated toward the final list.

On May 16, 2010, Eric Holder presented the commencement address at 波士顿大学, for both the All-University Ceremony and the School of Law. In addition, he was presented with an 荣誉 Doctor of Laws degree. On May 19, 2009, Holder was chosen by his母校, Columbia College, to be its Class Day Speaker.

延伸阅读

• Black U.S. Attorney Brings an Indictment Against Powerful House Committee Chairman. Jet (FindArticles.com). June 20, 1994 [July 1, 2008]. 
• Crabtree, Susan. A New Sheriff at Justice. Insight on the News (FindArticles.com). April 28, 1997 [July 1, 2008]. 
• Haywood, Richette L. First Black U.S. Attorney in D.C.. Ebony (FindArticles.com). 1994 [July 1, 2008]. 
• Longstreth, Andrew. Making History. The American Lawyer. 2008 [November 18, 2008]. 
• Randolph, Laura B. Power Couples. Ebony (FindArticles.com). 1999 [July 1, 2008]. 
• Lichtblau, Eric; David Johnston. Pardon Is Back in Focus for the Justice Nominee. The New York Times. December 1, 2008 [2008-12-02]. 

外部链接

• Profile at the United States Department of Justice
• Template:WhoRunsGov
• C-SPAN内的页面（英文）
• Johnzheng/Sandbox在《纽约时报》上的节选新闻及评论
• WorldCat 联合目录中Johnzheng/Sandbox的著作或与之相关的著作
• （Justice Department Bio of Holder as Deputy Attorney General，存于互联网档案馆）
• Answers.com
• Columbia University
• Covington & Burling
• The History Makers
• Homeland Security Policy Institute
• Eric Holder's federal campaign contribution report at NewsMeat
• Holder Speech at Department of Justice African American History Month Program Feb. 18, 2009
• Authenticated text, audio, video of Eric Holder Speech at the Department of Justice African American History Month Program AmericanRhetoric.com
• Attorney General Holder Speech to the African Union Summit July 2010
• Will Eric Holder Be the Anti-Torture Hero? by Andy Worthington, The Huffington Post, July 12, 2009

铁 ₂₆Fe

氢（非金属） 氦（惰性气体） 锂（碱金属） 铍（碱土金属） 硼（类金属） 碳（非金属） 氮（非金属） 氧（非金属） 氟（卤素） 氖（惰性气体） 钠（碱金属） 镁（碱土金属） 铝（贫金属） 矽（类金属） 磷（非金属） 硫（非金属） 氯（卤素） 氩（惰性气体） 钾（碱金属） 钙（碱土金属） 钪（过渡金属） 钛（过渡金属） 钒（过渡金属） 铬（过渡金属） 锰（过渡金属） 铁（过渡金属） 钴（过渡金属） 镍（过渡金属） 铜（过渡金属） 锌（过渡金属） 镓（贫金属） 锗（类金属） 砷（类金属） 硒（非金属） 溴（卤素） 氪（惰性气体） 铷（碱金属） 锶（碱土金属） 钇（过渡金属） 锆（过渡金属） 铌（过渡金属） 钼（过渡金属） 𨱏（过渡金属） 钌（过渡金属） 铑（过渡金属） 钯（过渡金属） 银（过渡金属） 镉（过渡金属） 铟（贫金属） 锡（贫金属） 锑（类金属） 碲（类金属） 碘（卤素） 氙（惰性气体） 铯（碱金属） 钡（碱土金属） 镧（镧系元素） 铈（镧系元素） 镨（镧系元素） 钕（镧系元素） 钷（镧系元素） 钐（镧系元素） 铕（镧系元素） 钆（镧系元素） 铽（镧系元素） 镝（镧系元素） 钬（镧系元素） 铒（镧系元素） 铥（镧系元素） 镱（镧系元素） 镏（镧系元素） 铪（过渡金属） 钽（过渡金属） 钨（过渡金属） 铼（过渡金属） 锇（过渡金属） 铱（过渡金属） 铂（过渡金属） 金（过渡金属） 汞（过渡金属） 铊（贫金属） 铅（贫金属） 铋（贫金属） 钋（贫金属） 砈（类金属） 氡（惰性气体） 鍅（碱金属） 镭（碱土金属） 锕（锕系元素） 钍（锕系元素） 镤（锕系元素） 铀（锕系元素） 錼（锕系元素） 钸（锕系元素） 鋂（锕系元素） 锔（锕系元素） 鉳（锕系元素） 鉲（锕系元素） 鑀（锕系元素） 镄（锕系元素） 钔（锕系元素） 锘（锕系元素） 铹（锕系元素） 𬬻（过渡金属） 𬭊（过渡金属） 𬭳（过渡金属） 𬭛（过渡金属） 𬭶（过渡金属） 鿏（预测为过渡金属） 𫟼（预测为过渡金属） 𬬭（预测为过渡金属） 鿔（过渡金属） 鿭（预测为贫金属） 𫓧（贫金属） 镆（预测为贫金属） 𫟷（预测为贫金属） 鿬（预测为卤素） 鿫（预测为惰性气体） - ↑ 铁 ↓ 钌 锰 ← 铁 → 镍
外观
金属:带蓝的浅灰色，铁离子(II):黄绿色，铁离子(III):黄褐色 通过电解提炼制成的铁片（纯度99.97%+），左上角为高纯度（99,9999% = 6N）的1cm3铁方块。 铁的光谱
概况
名称·符号·序数	铁（iron）·Fe·26
元素类别	过渡金属
族·周期·区	8·4·d
标准原子质量	55.845(2)
电子排布	3d64s2 2,8,14,2 铁的电子层（2,8,14,2）
物理性质
物态	固体
密度	（接近室温） 7.874 g·cm−3
熔点	1811 K，1538 °C，2800 °F
沸点	3134 K，2862 °C，5182 °F
熔化热	13.8 kJ·mol−1
汽化热	349.6 kJ·mol−1
比热容	25.10 J·mol−1·K−1
蒸气压 压/Pa 1 10 100 1 k 10 k 100 k 温/K 1728 1890 2091 2346 2679 3132
原子性质
氧化态	2,3,4,6 （两性）
电负性	1.83（鲍林标度）
电离能	第一：762.5 kJ·mol−1 第二：1561.9 kJ·mol−1 第三：2957 kJ·mol−1 （更多）
原子半径	126 pm
共价半径	132±3(低自旋)，152±6（高自旋） pm
铁的原子谱线
杂项
晶体结构	简单立方晶格
磁序	磁性
电阻率	（20 °C）96.1n Ω·m
热导率	80.4 W·m−1·K−1
膨胀系数	（25 °C）11.8 µm·m−1·K−1
声速（细棒）	（室温）5120 m·s−1
杨氏模量	211 GPa
剪切模量	82 GPa
体积模量	170 GPa
泊松比	0.29
莫氏硬度	4
维氏硬度	608 MPa
布氏硬度	490 MPa
CAS号	7439-89-6
同位素
主条目：铁的同位素 同位素 丰度 半衰期​（t1/2） 衰变 方式 能量​（MeV） 产物 54Fe 5.8% >3.1×1022年 2个电子捕获 ? 54Cr 55Fe 痕量 2.73年 1个电子捕获 0.231 55Mn 56Fe 91.72% 稳定，带30粒中子 57Fe 2.2% 稳定，带31粒中子 58Fe 0.28% 稳定，带32粒中子 59Fe 痕量 44.503天 β−衰变 1.565 59Co 60Fe 痕量 2.6×106年 β−衰变 3.978 60Co

铁（Iron）是原子序数为26的化学元素，它的元素符号是Fe，是过渡金属中的一种，像其它的8族元素一样，有着众多的化合价。铁和铁的合金（例如：钢）是人类最常用的金属和磁性材料。纯净的铁表面呈光泽的银灰色，但在空气会被氧化而暗淡。

铁矿石是地壳的主要组成成分之一，在地壳中的丰度排行第四（前三位是氧、硅和铝）。它由大质量恒星的核聚变反应而产生，并且是核聚变反应链中最后的，也是最重的一个元素。

铁是应用最广泛的金属，铁的不同价态的化合物，也有着非常广泛的用途。单质状态的铁很活泼，在空气里会被氧化成铁的氧化物，也就是通常所说的生锈。铁的化合价从−2价到+6价，其中+2价和+3价最为常见。它能和卤素和氧族元素形成二元化合物。二茂铁是首个被发现的“三明治”化合物，这是一类结构非常特殊的有机金属化合物。在生物体内，含铁的血红蛋白和肌红蛋白能和二氧化碳或氧气形成配合物；这两种蛋白是常见的氧气转运蛋白，在脊椎动物的新陈代谢过程中起了重要的作用。

性状

同位素

天然状态下的铁拥有四种同位素: 5.845%的⁵⁴Fe, 91.754%的⁵⁶Fe, 2.119%的⁵⁷Fe和0.282%的 ⁵⁸Fe。⁵⁴Fe被认为可以进行双β衰变，然而这一过程尚未在实验中被观测到，计算给出的半衰期下限大约为：T_1/2>3.1×10²²年。⁶⁰Fe是一种半衰期为260万年的已绝灭核素。

Much of the past work on measuring the isotopic composition of Fe has focused on determining ⁶⁰Fe variations due to processes accompanying 核合成 (i.e., meteorite studies) and 矿物组成. 在近十年里， 质谱技术的进步have allowed the detection and quantification of minute, naturally occurring variations in the ratios of the 稳定同位素s of iron. Much of this work has been driven by the 地球科学和行星科学 communities, although applications to biological and industrial systems are beginning to emerge.

⁵⁶Fe作为铁元素丰度最高的同位素， is of particular interest to nuclear scientists as it represents最稳定的核素。⁵⁶Fe的聚变和裂变均无法放出能量。 Since ⁵⁶Ni is easily produced from lighter nuclei in the 氦核作用 in 核反应s in supernovae (参见硅燃烧过程), ⁵⁶Ni (14 alpha particles) is the endpoint of fusion chains inside extremely massive stars, since addition of another alpha particle would result in zinc-60, which requires a great deal more energy. This nickel-56, 半衰期大约6天, is therefore made in quantity in these stars, but soon decays by two successive positron emissions within supernova decay products in the supernova remnant gas cloud, to first radioactive ⁵⁶Co, and then稳定的⁵⁶Fe. This last nuclide is therefore common in the universe, relative to other stable metals of approximately the same atomic weight.

In phases of the meteorites Semarkona and Chervony Kut a correlation between the concentration of ⁶⁰Ni, the daughter product of ⁶⁰Fe, and the abundance of the stable iron isotopes could be found which is evidence for the existence of ⁶⁰Fe at the time of formation of the solar system. Possibly the energy released by the decay of ⁶⁰Fe contributed, together with the energy released by decay of the radionuclide ²⁶Al, to the remelting and differentiation of 小行星s after their formation 4.6 billion years ago. The abundance of ⁶⁰Ni present in extraterrestrial material may also provide further insight into the origin of the solar system and its early history. Of the stable isotopes, only ⁵⁷Fe has a nuclear spin (−1/2).

Nuclei of iron atoms have some of the highest binding energies per nucleon, surpassed only by the nickel isotope ⁶²Ni. This is formed by 核聚变 in stars. Although a further tiny energy gain could be extracted by synthesizing ⁶²Ni, conditions in stars are unsuitable for this process to be favored. Elemental distribution on Earth greatly favors iron over nickel, and also presumably in supernova element production.

⁵⁶Fe是由恒星核合成氦核作用所能产生的最重的稳定同位素；比铁和镍更重的元素则需要在超新星爆发过程中才能形成。铁是红巨星核心丰度最高的元素之一和铁陨石中丰度最高的金属，并且也是行星核心，如地球核心的主要组成部分之一。

历史

物理性质

铁 是有光泽的银白色金属，硬而有延展性，熔点为1535℃，沸点为3000℃，有很强的铁磁性，并有良好的可塑性和导热性。晶体结构为体心立方结构，晶格常 数a=2.87埃.日常生活中的铁通常含有碳因而暴露在氧气中容易在遇到水的情况下发生电化学腐蚀，而纯度较高的铁则不易腐蚀。

化学性质

具有金属单质的通性，能与非金属单质、酸、盐等反应。

发现

铁是古代就已知的金属之一。铁矿石是地壳主要组成成分之一，铁在自然界中分布极为广泛，但人类发现和利用铁却比黄金和铜要迟。首先是由于天然的单质状态的铁在地球上非常稀少，而且它容易氧化生锈，加上它的熔点（1812K）又比铜（1356K）高得多，就使得它比铜难于熔炼。人类最早发现的铁是从天空落下来的陨石，陨石中含铁的百分比很高，是铁和镍、钴等金属的混合物，在融化铁矿石的方法尚未问世，人类不可能大量获得生铁的时候，铁一直被视为一种带有神秘性的最珍贵的金属。

铁的发现和大规模使用，是人类发展史上的一个光辉里程碑，它把人类从石器时代、铜器时代带到了铁器时代，推动了人类文明的发展。至今铁仍然是现代化学工业的基础，人类进步所必不可少的金属材料。

名称由来

铁，化学符号Fe的来源是拉丁文名称Ferrum。

分布

铁是地球上分布最广的金属之一。约占地壳质量的5.1%，居元素分布序列中的第四位，仅次于氧、硅和铝。

在自然界，游离态的铁只能从陨石中找到，分布在地壳中的 铁都以化合物的状态存在。铁的主要矿石有：赤铁矿Fe₂O₃，含铁量在50%~60%之间；磁铁矿Fe₃O₄，含铁量60%以上，有亚铁磁性，此外还有褐铁矿Fe₂O₃·nH₂O、菱铁矿FeCO₃和黄铁矿FeS₂，它们的含铁量低一些，但比较容易冶炼。中国的铁矿资源非常丰富，著名的产地有湖北大冶、东北鞍山等。

铁的生产流程

参见：铁矿

铁或者钢的生产一般由两个主要步骤构成（若需要的是铸铁则没有第二步）。第一步是通过高炉得到生铁，第二步是通过进一步的处理得到熟铁或钢。

高炉法

主条目：高炉

制备

单质铁的制备一般采用冶炼法。以赤铁矿（Fe₂O₃）和磁铁矿（Fe₃O₄）为原料，与焦炭和助溶剂在熔矿炉内反应，焦炭燃烧产生二氧化碳（CO₂），二氧化碳与过量的焦炭接触就生成一氧化碳（CO），一氧化碳和矿石内的氧化铁作用就生成金属铁。

${\rm {C+O_{2}\rightarrow CO_{2}}}$

${\rm {CO_{2}+C\rightarrow 2CO}}$

${\rm {Fe_{3}O_{4}+4CO\rightarrow 3Fe+4CO_{2}}}$

${\rm {Fe_{2}O_{3}+3CO\rightarrow 2Fe+3CO_{2}}}$

${\rm {FeO+CO\rightarrow Fe+CO_{2}}}$

以上反应都是可逆反应，所产生的一氧化碳浓度越大越好，要使反应进行完全必须在800度以上进行。

化学纯的铁是用氢气还原纯氧化铁来制取，也可由羧基合铁来制取，也可由羧基合铁热分解来得到纯铁。

用途

在我们的生活里，铁可以算是最有用、最廉价、最丰富、最重的金属。工农业生产中，铁是最重要的基本结构材料，铁合金用途广泛；国防和战争更是钢铁的较量，钢铁的年产量代表一个国家的现代化水准。

对于人体，铁是不可缺少的微量元素。在十多种人体必需的微量元素中，铁无论在重要性上还是在数量上，都居于首位。

一个正常的成年人全身含有3克多铁，相当于一颗小铁钉的质量。人体血液中的血红蛋白就是铁的配合物，它具有固定氧和输送氧的功能。人体缺铁会引起贫血症。只要不偏食，不大出血，成年人一般不会缺铁。

所谓煤气中毒（一氧化碳中毒），也是由于血红素中铁离子核心被一氧化碳气体分子紧紧地包围住，丧失了吸收氧分子的能力，使人窒息中毒而死亡。

铁还是植物制造叶绿素不可缺少的催化剂。如果一盆花缺少铁，花就会失去颜色和芳香，叶子也发黄枯萎。一般土壤中也含有不少铁的化合物。

危险性

• 元素铁在洛斯阿拉莫斯国家实验室的介绍（英文）
• EnvironmentalChemistry.com —— 铁（英文）
• 元素铁在The Periodic Table of Videos（诺丁汉大学）的介绍（英文）
• 元素铁在Peter van der Krogt elements site的介绍（英文）
• WebElements.com – 铁（英文）