Evaluation of the elastic modulus and strength of unsymmetrical Al2O3 coating on Ti3SiC2 substrate by a modified relative methodology

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	Evaluation of the elastic modulus and strength of unsymmetrical Al2O3 coating on Ti3SiC2 substrate by a modified relative methodology
	D. T. Wan; Y. C. Zhou; Y. W. Bao
	2008
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	474 期号:1-2 页码:64-70
摘要	Putting Ti3SiC2 in sandwich of Al2O3 will produce the hard-soft-hard sandwich composites of Al2O3/Ti3SiC2/Al2O3 with improved oxidation resistance and high hardness. The relative method has been established to evaluate the elastic modulus and strength of the symmetrical coating. However, it is difficult to make the thickness of the Al2O3 coatings on both sides exactly the same during the synthesis process and this results in deviation inevitably. It is significant to develop a modified relative method to suit for the unsymmetrical coated sandwich samples. In this work, the sandwich composites of Al2O3/Ti3SiC2/Al2O3 with strong interfaces were prepared by in situ hot pressing process and a modified relative method was derived for determining the elastic modulus and strength of the Al2O3 coating. Experimental results revealed that the modulus and strength of Al2O3 were 398.2 GPa and 313.2 MPa, respectively, which demonstrated the validity and convenience of the modified relative method. The mechanism for the strong interface between Ti3SiC2 and Al2O3 was also discussed. (C) 2007 Elsevier B.V. All rights reserved.
部门归属	[wan, detian; zhou, yanchun; bao, yiwang] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [wan, detian] chinese acad sci, grad sch, beijing 100039, peoples r china.;zhou, yc (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china;yczhou@imr.ac.cn
关键词	Relative Method Elastic Modulus Strength Ti3sic2 Al2o3 High-temperature Residual-stress Bulk Ceramics Indentation Composites Damage Behavior Hardness Phases
URL	查看原文
WOS记录号	WOS:000253030500008
引用统计	被引频次：13[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/33112
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	D. T. Wan,Y. C. Zhou,Y. W. Bao. Evaluation of the elastic modulus and strength of unsymmetrical Al2O3 coating on Ti3SiC2 substrate by a modified relative methodology[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2008,474(1-2):64-70.
APA	D. T. Wan,Y. C. Zhou,&Y. W. Bao.(2008).Evaluation of the elastic modulus and strength of unsymmetrical Al2O3 coating on Ti3SiC2 substrate by a modified relative methodology.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,474(1-2),64-70.
MLA	D. T. Wan,et al."Evaluation of the elastic modulus and strength of unsymmetrical Al2O3 coating on Ti3SiC2 substrate by a modified relative methodology".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 474.1-2(2008):64-70.