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 2; Wang, Xiao-Min 1,2; La, Pei-Qing 1
刊名	Cailiao Gongcheng/Journal of Materials Engineering
	2015-10-20
卷号	43 期号:10 页码:66-72
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
ISSN号	10014381
DOI	10.11868/j.issn.1001-4381.2015.10.011
英文摘要	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.
语种	中文
出版者	Beijing Institute of Aeronautical Materials (BIAM)
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/112854]
专题	材料科学与工程学院
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China 2.School of Mechanical Engineering, Qinghai University, Xining; 810016, 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.