A Critical Review of the Oxidation of Ti2AlC, Ti3AlC2 and Cr2AlC in Air

Darin  J. Tallman; Babak Anasori; Michel  W. Barsoum

doi:10.1080/21663831.2013.806364

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A Critical Review of the Oxidation of Ti2AlC, Ti3AlC2 and Cr2AlC in Air

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- A Critical Review of the Oxidation of Ti2AlC, Ti3AlC2 and Cr2AlC in Air
- Materials Research Letters Vol. 1, Issue 3, Pages: 115-125(2013)
- 作者机构：
  
  Materials Science and Technology Drexel University Philadelphia PA
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2013.806364
  CLC：
- Online First：08 June 2013，
  
  Published：2013
- 稿件说明：
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Darin J. Tallman, Babak Anasori, Michel W. Barsoum. A Critical Review of the Oxidation of Ti2AlC, Ti3AlC2 and Cr2AlC in Air[J]. Materials Research Letters, 2013, 1(3): 115-125.
DOI：

Darin J. Tallman, Babak Anasori, Michel W. Barsoum. A Critical Review of the Oxidation of Ti2AlC, Ti3AlC2 and Cr2AlC in Air[J]. Materials Research Letters, 2013, 1(3): 115-125. DOI： 10.1080/21663831.2013.806364.

摘要

Of all the M

phases

the most resistant to oxidation in air in the 900–1

400°C temperature range are Ti

AlC

and Cr

AlC. A literature review

however

shows that whil

e many claim the oxidation kinetics to be parabolic

others claim them to be cubic. Whether the kinetics are parabolic or better is of vital practical importance. By carefully re-plotting the results of others and carrying out one oxidation run for ≈3

000 h at 1

200°C on a Ti

AlC sample

we conclude that the oxidation kinetics are better described by cubic kinetics and that even that conclusion is an approximation. Lastly

we present compelling evidence that the rate-limiting step during the oxidation of Ti

AlC is diffusion down the alumina scale grain boundaries.

Abstract

Of all the M

phases

the most resistant to oxidation in air in the 900–1

400°C temperature range are Ti

AlC

and Cr

AlC. A literature review

however

shows that while many claim the oxidation kinetics to be parabolic

000 h at 1

200°C on a Ti

AlC sample

we conclude that the oxidation kinetics are better described by cubic kinetics and that even that conclusion is an approximation. Lastly

we present compelling evidence that the rate-limiting step during the oxidation of Ti

AlC is diffusion down the alumina scale grain boundaries.

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Related Institution

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