Influence of Cr content and initial Cr particle size on the dielectric properties of plasma-sprayed Cr/Al2O3 coatings

CORC > 兰州化学物理研究所 > 中国科学院兰州化学物理研究所 > 固体润滑国家重点实验室

	Influence of Cr content and initial Cr particle size on the dielectric properties of plasma-sprayed Cr/Al2O3 coatings
	Zhou, Liang 1,3,4; Dong, Yanli 2; Wang, Zhenjun 1; Wang, Yuxin 1; Hua, Dongpeng 1
刊名	Surface and Coatings Technology
	2017
卷号	313 页码:374-380
关键词	Plasma spraying Cermet coatings Complex permittivity Particle size Microstructure
ISSN号	0257-8972
通讯作者	Zhou, Liang ; Dong, Yanli
英文摘要	Cr/Al₂O₃ coatings were deposited by low-power plasma spray process with dry-crushed powders. The coatings exhibited a microstructure formed by fully molten splat-like metallic lamellae and partially molten or un-molten submicron Al₂O₃ particles, surround by a fully molten alumina matrix. The content and size of metallic Cr in the coatings played a dominant role in the formation of metallic clusters. Complex permittivity measurement showed that the coatings with higher Cr content and larger Cr particle size exhibited higher ε′ and ε″ values due to the enhanced interfacial polarization and conductance loss. Furthermore, strong frequency dependency was observed for the coatings with 15 wt% Cr addition and 50–74 μm Cr particle size.
学科主题	材料科学与物理化学
收录类别	SCI
资助信息	the National Natural Science Foundation of China (No. 51302018);Natural Science Foundation of Shaanxi Province (No. 2014JQ6210);the Fundamental Research Funds for the Central Universities from Chang'an University (No. 310831171005);the foundation of State Key Laboratory of Solid Lubrication in LICP (No. LSL-1412);the foundation of State Key Laboratory for Mechanical Behavior of Materials in XJTU (No. 20151704);the Special Fund for Innovation Team Research of Central Colleges in CHD (No. 310831163401), China
语种	英语
WOS记录号	WOS:000398873100045
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/21737]
专题	兰州化学物理研究所_固体润滑国家重点实验室
作者单位	1.Changan Univ, Sch Mat Sci & Engn, Xian 710064, Peoples R China 2.Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China 3.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 4.Univ Toronto, Ctr Adv Coating Technol, Toronto, ON M5S 3G8, Canada
推荐引用方式 GB/T 7714	Zhou, Liang,Dong, Yanli,Wang, Zhenjun,et al. Influence of Cr content and initial Cr particle size on the dielectric properties of plasma-sprayed Cr/Al2O3 coatings[J]. Surface and Coatings Technology,2017,313:374-380.
APA	Zhou, Liang,Dong, Yanli,Wang, Zhenjun,Wang, Yuxin,&Hua, Dongpeng.(2017).Influence of Cr content and initial Cr particle size on the dielectric properties of plasma-sprayed Cr/Al2O3 coatings.Surface and Coatings Technology,313,374-380.
MLA	Zhou, Liang,et al."Influence of Cr content and initial Cr particle size on the dielectric properties of plasma-sprayed Cr/Al2O3 coatings".Surface and Coatings Technology 313(2017):374-380.