Influence of grain size on high temperature oxidation behavior of Cr2AlC ceramics

被引：66
作者：
Li, Shibo [1 ]
Chen, Xiaodong [1 ]
Zhou, Yang [1 ]
Song, Guiming [2 ]
机构：
[1] Beijing Jiaotong Univ, Sch Mech & Elect Control Engn, Ctr Mat Sci & Engn, Beijing 100044, Peoples R China
[2] Delft Univ Technol, Dept Mat Sci & Engn, NL-2628 CD Delft, Netherlands
来源：
CERAMICS INTERNATIONAL | 2013年 / 39卷 / 03期
基金：
中国国家自然科学基金;
关键词：
A. Hot pressing; B. Grain size; C; Corrosion; D; Carbides; MECHANICAL-PROPERTIES; M(N+1)AX(N) PHASES; TENSILE CREEP; TI2ALC; TI3SIC2; FINE; COARSE; DENSE;
D O I：
10.1016/j.ceramint.2012.09.039
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The influence of grain size on the oxidation behavior of Cr2AlC at 1100 degrees C and 1200 degrees C for different times was investigated using fine grained (2 mu m) and coarse grained (60 pm) samples. The two materials show a good oxidation resistance owing to the formation of a dense and continuous Al2O3 layer. The oxidation rate of the fine grained Cr2AlC is relatively faster than that of the coarse grained Cr2AlC. The microstructure and phase composition of scale was characterized. After oxidation at 1100 degrees C and 1200 degrees C for long times up to 100 h, only a dense and continuous alpha-Al2O3 oxide layer formed on both the fine grained and coarse grained Cr2AlC. However, after oxidation at 1100 degrees C for a relatively short 2 h period, a Cr7C3 compound was detected beneath the alpha-Al2O3 oxide layer on the coarse grained Cr2AlC, yet no Cr7C3 was found in the fine grained Cr2AlC. The oxidation mechanism of the fine and the coarse grained Cr2AlC was discussed. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：2715 / 2721
页数：7
相关论文
共 31 条
[1]   Synthesis and mechanical properties of fully dense Ti2SC [J].
Amini, Shahram ;
Barsoum, Michel W. ;
El-Raghyy, Tamer .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2007, 90 (12) :3953-3958
[2]   Elastic and Mechanical Properties of the MAX Phases [J].
Barsoum, Michel W. ;
Radovic, Miladin .
ANNUAL REVIEW OF MATERIALS RESEARCH, VOL 41, 2011, 41 :195-227
[3]   The MN+1AXN phases:: A new class of solids;: Thermodynamically stable nanolaminates [J].
Barsoum, MW .
PROGRESS IN SOLID STATE CHEMISTRY, 2000, 28 (1-4) :201-281
[4]   Alloy design of intermetallics for protective scale formation and for use as precursors for complex ceramic phase surfaces [J].
Brady, MP ;
Tortorelli, PF .
INTERMETALLICS, 2004, 12 (7-9) :779-789
[5]   The Mn+1AXn phases: Materials science and thin-film processing [J].
Eklund, Per ;
Beckers, Manfred ;
Jansson, Ulf ;
Hogberg, Hans ;
Hultman, Lars .
THIN SOLID FILMS, 2010, 518 (08) :1851-1878
[6]   Processing and mechanical properties of Ti3SiC2:: II, effect of grain size and deformation temperature [J].
El-Raghy, T ;
Barsoum, MW ;
Zavaliangos, A ;
Kalidindi, SR .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1999, 82 (10) :2855-2860
[7]   Effect of grain size on friction and wear behavior of Ti3SiC2 [J].
El-Raghy, T ;
Blau, P ;
Barsoum, MW .
WEAR, 2000, 238 (02) :125-130
[8]   Fatigue-crack growth and fracture properties of coarse and fine-grained Ti3SiC2 [J].
Gilbert, CJ ;
Bloyer, DR ;
Barsoum, MW ;
El-Raghy, T ;
Tomsia, AP ;
Ritchie, RO .
SCRIPTA MATERIALIA, 2000, 42 (08) :761-767
[9]   Cyclic oxidation of Cr2AlC between 1000 and 1300 °C in air [J].
Lee, D. B. ;
Nguyen, Thuan Dinh .
JOURNAL OF ALLOYS AND COMPOUNDS, 2008, 464 (1-2) :434-439
[10]   Oxidation of Cr2AlC Between 900 and 1200°C in Air [J].
Lee, D. B. ;
Park, S. W. .
OXIDATION OF METALS, 2007, 68 (5-6) :211-222
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