Oxidation of Cr2AlC at 1300 °C in air

被引：73

作者：

Lee, D. B. ^{[1
]}

Nguyen, Thuan Dinh

Han, J. H.

Park, S. W.

机构：

[1] Sungkyunkwan Univ, Ctr Adv Plasma Surface Technol, Suwon 440746, South Korea

[2] Multifunct Ceram Res Ctr, KIST, Seoul 136791, South Korea

来源：

CORROSION SCIENCE | 2007年 / 49卷 / 10期

关键词：

ceramic; SEM; high-temperature corrosion; oxidation;

D O I：

10.1016/j.corsci.2007.03.044

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High purity, dense Cr2AlC compounds were synthesized via a powder metallurgical route, and their oxidation behavior was investigated at 1300 degrees C in air for up to 336 h. A thin external oxide layer formed, which consisted primarily of not Cr2O3 but Al2O3. Since Al was consumed to produce the Al2O3, Al-depletion and Cr-enrichment occurred underneath the Al2O3 layer. This led to the formation of a Cr7C3 layer containing voids. These grew during oxidation, eventually destroying the Cr7C3 layer formed on the unoxidized Cr2AlC matrix. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：3926 / 3934

页数：9

共 10 条

[1]

Barin I., 1989, THERMOCHEMICAL DATA, P48

[2] Oxidation of Ti3SiC2 in air [J].

Barsoum, MW ;

ElRaghy, T ;

Ogbuji, LUJT .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1997, 144 (07) :2508-2516

[3] In-situ hot pressing/solid-liquid reaction synthesis of bulk Cr2AlC [J].

Lin, ZJ ;

Zhou, YC ;

Li, MS ;

Wang, JY .

ZEITSCHRIFT FUR METALLKUNDE, 2005, 96 (03) :291-296

[4]

PINT BA, 1977, OXIDATION INTERMETAL, P183

[5] Electronic origin of shearing in M2AC (M = Ti, V, Cr, A = Al, Ga) [J].

Sun, ZM ;

Music, D ;

Ahuja, R ;

Schneider, JM .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2005, 17 (46) :7169-7176

[6] Calculated elastic properties of M2AlC (M = Ti, V, Cr, Nb and Ta) [J].

Sun, ZM ;

Li, S ;

Ahuja, R ;

Schneider, JM .

SOLID STATE COMMUNICATIONS, 2004, 129 (09) :589-592

[7] Synthesis and thermal and electrical properties of bulk Cr2AlC [J].

Tian, WB ;

Wang, PL ;

Zhang, GJ ;

Kan, YM ;

Li, YX ;

Yan, DS .

SCRIPTA MATERIALIA, 2006, 54 (05) :841-846

[8] Synthesis and characterization of Ti3AlC2 [J].

Tzenov, NV ;

Barsoum, MW .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2000, 83 (04) :825-832

[9] High-temperature oxidation behavior of Ti2AlC in air [J].

Wang, XH ;

Zhou, YC .

OXIDATION OF METALS, 2003, 59 (3-4) :303-320

[10] Electronic structure and bonding properties of layered machinable Ti2AlC and Ti2AlN ceramics [J].

Zhou, YC ;

Sun, ZM .

PHYSICAL REVIEW B, 2000, 61 (19) :12570-12573

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