Effect of high-temperature oxidation on Si3N4 containing Ti3AlC2

doi:10.1016/j.ceramint.2020.02.273

CORC > 兰州理工大学 > 兰州理工大学 > 省部共建有色金属先进加工与再利用国家重点实验室

	Effect of high-temperature oxidation on Si3N4 containing Ti3AlC2
	Liu, Jiongjie 2,3; Yang, Jun 2; Yi, Gewen 2; Ma, Jiqiang 4; Yu, Yuan 2; Qiao, Zhuhui 1,2; Hu, Bin 2; Liu, Weimin 2
刊名	Ceramics International
	2020-07-01
卷号	46 期号:10 页码:14697-14705
关键词	Aluminum compounds Fracture toughness Microcracks Oxide minerals Silicon Silicon carbide Silicon compounds Spark plasma sintering Thermooxidation Titanium dioxide Ceramic parts Friction and wear performance High-temperature environment In-situ formations Mechanical and tribological properties Pinning effects Surface barrier Toughening mechanisms
ISSN号	02728842
DOI	10.1016/j.ceramint.2020.02.273
英文摘要	In this work, a dense Si3N4-based composite was fabricated by spark plasma sintering the mixture of Si3N4 and Ti3AlC2. The nitrogen atoms of Si3N4 diffused into the TiCx lattice and leaded to the in-situ formation of TiC0.3N0.7 and SiC compounds. After annealing in air at 900 °C, TiC0.3N0.7 was oxidized to form rutile-TiO2 particles (about 3–4 μm). Meanwhile, it was found that the oxidized composite displayed superior mechanical and tribological properties, compared to Si3N4 and Si3N4-based composite before oxidation. Typically, the fracture toughness reached 9.97 MPa m1/2, which was 59.5% higher than that of Si3N4. In addition to cracks branch, bridge and deflection, the surface barrier of oxides was another major toughening mechanism. Besides, due to the pinning effect of TiC0.3N0.7, sliding-induced microcracks were completely suppressed, and the composite exhibited excellent friction and wear performances. In this case, the composite is expected to be fabricated into ceramic parts for service in high temperature environment. © 2020 Elsevier Ltd and Techna Group S.r.l.
语种	英语
出版者	Elsevier Ltd
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/115525]
专题	省部共建有色金属先进加工与再利用国家重点实验室
作者单位	1.Qingdao Center of Resource Chemistry & New Materials, Qingdao; 266000, China; 2.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou; 730000, China; 3.Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing; 100039, China; 4.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Liu, Jiongjie,Yang, Jun,Yi, Gewen,et al. Effect of high-temperature oxidation on Si3N4 containing Ti3AlC2[J]. Ceramics International,2020,46(10):14697-14705.
APA	Liu, Jiongjie.,Yang, Jun.,Yi, Gewen.,Ma, Jiqiang.,Yu, Yuan.,...&Liu, Weimin.(2020).Effect of high-temperature oxidation on Si3N4 containing Ti3AlC2.Ceramics International,46(10),14697-14705.
MLA	Liu, Jiongjie,et al."Effect of high-temperature oxidation on Si3N4 containing Ti3AlC2".Ceramics International 46.10(2020):14697-14705.