Fabrication and properties of a dense SiC NWs-toughened alpha-Si3N4 composite coating on porous Si3N4 ceramics

doi:10.1111/ijac.13419

	Fabrication and properties of a dense SiC NWs-toughened alpha-Si3N4 composite coating on porous Si3N4 ceramics
	Shangguan, Duandan 1; Wang, Binglei 1; Wang, Chao 1; Zhang, Fan 1; Bai, Yu 1; Wang, Zhanjie 1; Lu, Xuefeng2
	2019-11-19
发表期刊	INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
ISSN	1546-542X
卷号	17 期号:2 页码:501-508
摘要	A dense SiC nanowires-toughened alpha-Si3N4 coating was prepared using a two-step technique for protecting porous Si3N4 ceramic against mechanical damage, and effect of SiC nanowires content on microstructures and properties of the coating were investigated. XRD, SEM and TEM analysis results revealed that as-prepared coatings consisted of alpha-Si3N4, O'-Sialon, SiC nanowires and Y-Al-Si-O-N glass phase. Furthermore, Vickers hardness of the coated porous Si3N4 ceramics increased gradually with the increasing SiC nanowires content from 0 to 10 wt%, which is attributed to the gradual improvement in intrinsic elastic modulus (E), hardness (H) and H-3/E-2 of the coatings. But, when the SiC nanowires content was 15 wt%, the thickness of the coating became relatively thinner, so that its protective ability was weakened and Vickers hardness started to decrease accordingly. Meanwhile, the assistance of SiC nanowires enhanced fracture toughness of the coatings obviously because SiC nanowires in the coatings can produce various toughening mechanisms during mechanical damage. When the SiC nanowires content was 10 wt%, its fracture toughness reached the maximum value, which was 6.27 +/- 0.05 MPa center dot m(1/2).
关键词	porous Si3N4 properties SiC NWs-toughened alpha-Si3N4 coating toughening mechanism
DOI	10.1111/ijac.13419
收录类别	SCI
语种	英语
资助项目	State Key Laboratory for Mechanical Behavior of Materials[20171905] ; Natural Science Foundation of Liaoning Province[20170520387]
WOS研究方向	Materials Science
WOS类目	Materials Science, Ceramics
WOS记录号	WOS:000497075300001
出版者	WILEY
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/76292
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材料科学与工程学院
通讯作者	Wang, Chao
作者单位	1.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Liaoning, Peoples R China 2.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Shangguan, Duandan,Wang, Binglei,Wang, Chao,et al. Fabrication and properties of a dense SiC NWs-toughened alpha-Si3N4 composite coating on porous Si3N4 ceramics[J]. INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY,2019,17(2):501-508.
APA	Shangguan, Duandan.,Wang, Binglei.,Wang, Chao.,Zhang, Fan.,Bai, Yu.,...&Lu, Xuefeng.(2019).Fabrication and properties of a dense SiC NWs-toughened alpha-Si3N4 composite coating on porous Si3N4 ceramics.INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY,17(2),501-508.
MLA	Shangguan, Duandan,et al."Fabrication and properties of a dense SiC NWs-toughened alpha-Si3N4 composite coating on porous Si3N4 ceramics".INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY 17.2(2019):501-508.