Effects of sintering temperature on mechanical properties and microstructure of 20% ZrO2(3Y)/Al2O3 composite ceramics

doi:10.11868/j.issn.1001-4381.2015.10.011

	Effects of sintering temperature on mechanical properties and microstructure of 20% ZrO2(3Y)/Al2O3 composite ceramics
	Wang, Bing-Jun 1; Wang, Xiao-Min 1,2; La, Pei-Qing2
	2015-10-20
发表期刊	Cailiao Gongcheng/Journal of Materials Engineering
ISSN	10014381
卷号	43 期号:10 页码:66-72
摘要	20% nano ZrO2 (3Y) powders were added to high purity submicron Al2O3 powders, then composite ceramics were prepared by high-pressure dry pressing and constant heating, multi-stage, short insulation sintering method at different temperatures. The effect of sintering temperature on mechanical properties of composite ceramics was investigated, the phase composition and microstructure of composite ceramics were analyzed by XRD, EDS and SEM. The results show that the sintering temperature affects the mechanical properties and microstructure of composite ceramics greatly. The relative density, vickers hardness and fracture toughness reach the maximum value, respectively 98.6%, 18.54 GPa and 9.3 MPa·m1/2 under atmospheric sintering at 1600 and insulation 8h. While the grain size of the matrix is about 1.4-8.1 μm and ZrO2 phase transition is 34.6%. Composite ceramics have excellent microstructure sintered at 1600. The fracture mode of the composite ceramics is intergranular-transgranular mixed fracture mode. The fracture toughness of the composite ceramics is improved by phase transition toughening, intragranular particles toughening, crack deflection and other aspects when adding nano-sized ZrO2 (3Y) powder. ©, 2015, Beijing Institute of Aeronautical Materials (BIAM). All right reserved.
关键词	Alumina Aluminum oxide Ceramic materials Fracture toughness Mechanical properties Microstructure Powders Sintering Textures Vickers hardness Zirconia Atmospheric sintering Composite ceramic Crack deflections Intragranular particles Phase transition toughening Properties and microstructures Properties of composites Sintering temperatures
DOI	10.11868/j.issn.1001-4381.2015.10.011
收录类别	EI
语种	中文
出版者	Beijing Institute of Aeronautical Materials (BIAM)
EI入藏号	20154701563266
EI主题词	Yttrium compounds
EI分类号	804.2 Inorganic Compounds - 951 Materials Science
来源库	Compendex
分类代码	804.2 Inorganic Compounds - 812.1 Ceramics - 951 Materials Science
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/112854
专题	材料科学与工程学院
作者单位	1.School of Mechanical Engineering, Qinghai University, Xining; 810016, China; 2.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Wang, Bing-Jun,Wang, Xiao-Min,La, Pei-Qing. Effects of sintering temperature on mechanical properties and microstructure of 20% ZrO2(3Y)/Al2O3 composite ceramics[J]. Cailiao Gongcheng/Journal of Materials Engineering,2015,43(10):66-72.
APA	Wang, Bing-Jun,Wang, Xiao-Min,&La, Pei-Qing.(2015).Effects of sintering temperature on mechanical properties and microstructure of 20% ZrO2(3Y)/Al2O3 composite ceramics.Cailiao Gongcheng/Journal of Materials Engineering,43(10),66-72.
MLA	Wang, Bing-Jun,et al."Effects of sintering temperature on mechanical properties and microstructure of 20% ZrO2(3Y)/Al2O3 composite ceramics".Cailiao Gongcheng/Journal of Materials Engineering 43.10(2015):66-72.