Al2O3-TiC-ZrO2 nanocomposites fabricated by combustion synthesis followed by hot pressing

CORC > 过程工程研究所 > 中国科学院过程工程研究所 > 研究所（批量导入）

	Al2O3-TiC-ZrO2 nanocomposites fabricated by combustion synthesis followed by hot pressing
	Dong, Qian 1; Tang, Qing 2; Li, Wenchao 3
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2008-02-25
卷号	475 期号:1-2 页码:68-75
关键词	Al2O3-TiC-ZrO2 nanocomposite combustion synthesis hot pressing mechanical property microstructure
ISSN号	0921-5093
其他题名	Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process.
中文摘要	Al2O3-TiC-ZrO2 nanocomposites were prepared by combustion synthesis followed by hot pressing with TiO2, Al, C and ZrO2 as raw materials. Combustion synthesis is favorable to obtain in situ formed powder with TiC and ZrO2 nanoparticles distributed in Al2O3 matrix. The effects of varying amount of ZrO2 nano-scale additives on the mechanical properties and microstructure of Al2O3-TiC composite were studied. An appropriate amount of ZrO2 nanoparticle additive improves the mechanical properties. The flexural strength and fracture toughness of Al2O3-TiC-10 wt.% ZrO2 composite were approximately 20% higher than that of Al2O3-TiC composite. The addition of ZrO2 nanoparticles reduced the grain size and improved the distribution of different phases. With the ZrO2 addition, the fracture mode changes from intergranular to mixed inter/transgranular fracture. The residual stresses are generated by the thermal expansion coefficient mismatch between different phases, which leads to the generation of dislocations and microcracks around the nanoparticles. The effects of nanoparticles on the deflected propagation, nailing and blocking of the dislocation and microcracks are believed to contribute to the improvement of the strength and toughness of Al2O3-TiC-ZrO2 composite. (C) 2007 Elsevier B.V. All rights reserved.
英文摘要	Al2O3-TiC-ZrO2 nanocomposites were prepared by combustion synthesis followed by hot pressing with TiO2, Al, C and ZrO2 as raw materials. Combustion synthesis is favorable to obtain in situ formed powder with TiC and ZrO2 nanoparticles distributed in Al2O3 matrix. The effects of varying amount of ZrO2 nano-scale additives on the mechanical properties and microstructure of Al2O3-TiC composite were studied. An appropriate amount of ZrO2 nanoparticle additive improves the mechanical properties. The flexural strength and fracture toughness of Al2O3-TiC-10 wt.% ZrO2 composite were approximately 20% higher than that of Al2O3-TiC composite. The addition of ZrO2 nanoparticles reduced the grain size and improved the distribution of different phases. With the ZrO2 addition, the fracture mode changes from intergranular to mixed inter/transgranular fracture. The residual stresses are generated by the thermal expansion coefficient mismatch between different phases, which leads to the generation of dislocations and microcracks around the nanoparticles. The effects of nanoparticles on the deflected propagation, nailing and blocking of the dislocation and microcracks are believed to contribute to the improvement of the strength and toughness of Al2O3-TiC-ZrO2 composite. (C) 2007 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
研究领域[WOS]	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
关键词[WOS]	HIGH-TEMPERATURE SYNTHESIS ; MECHANICAL-PROPERTIES ; COMPOSITE ; MICROSTRUCTURE ; CERAMICS ; BEHAVIOR
收录类别	ISTP ; SCI
原文出处	://WOS:000253693100014
语种	英语
WOS记录号	WOS:000253693100014
公开日期	2013-10-08
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/2736]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.Royal Inst Technol, Div Corros Sci, SE-10044 Stockholm, Sweden 2.Chinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China 3.Univ Sci & Technol Beijing, Dept Phys Chem, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Dong, Qian,Tang, Qing,Li, Wenchao. Al2O3-TiC-ZrO2 nanocomposites fabricated by combustion synthesis followed by hot pressing[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2008,475(1-2):68-75.
APA	Dong, Qian,Tang, Qing,&Li, Wenchao.(2008).Al2O3-TiC-ZrO2 nanocomposites fabricated by combustion synthesis followed by hot pressing.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,475(1-2),68-75.
MLA	Dong, Qian,et al."Al2O3-TiC-ZrO2 nanocomposites fabricated by combustion synthesis followed by hot pressing".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 475.1-2(2008):68-75.