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

doi:10.1016/j.surfcoat.2017.02.007

	Influence of Cr content and initial Cr particle size on the dielectric properties of plasma-sprayed Cr/Al2O3 coatings
Department	固体润滑国家重点实验室
	Zhou, Liang 1,3,4; Dong, Yanli 2; Wang, Zhenjun 1; Wang, Yuxin 1; Hua, Dongpeng 1
	2017
Source Publication	Surface and Coatings Technology
ISSN	0257-8972
Volume	313 Pages:374-380
Abstract	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.
Keyword	Plasma Spraying Cermet Coatings Complex Permittivity Particle Size Microstructure
Subject Area	材料科学与物理化学
DOI	10.1016/j.surfcoat.2017.02.007
Funding Organization	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
Indexed By	SCI
If	2.589
Language	英语
compositor	第三作者单位
Citation statistics	Cited Times:6[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.licp.cn/handle/362003/21737
Collection	固体润滑国家重点实验室（LSL）
Corresponding Author	Zhou, Liang; Dong, Yanli
Affiliation	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
Recommended Citation 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.

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