Preparation and Thermal Conductivity of 7YSZ Thermal Barrier Coatings Prepared by Plasma Spray-physical Vapor Deposition

被引：6

作者：

Yuan T. ^{[1
,2
]}

Deng C.-G. ^{[2
,3
,4
]}

Mao J. ^{[2
,3
,4
]}

Deng C.-M. ^{[2
,3
,4
]}

Deng Z.-Q. ^{[2
,3
]}

机构：

[1] School of Materials Science and Engineering, Central South University, Changsha

[2] Institute of New Materials, Guangzhou Research Institute of Non-ferrous Metals, Guangzhou

[3] National Engineering Lab for Modern Materials Surface Engineering Technology, Guangzhou

[4] Guangdong Provincial Key Lab for Modern Materials Surface Engineering Technology, Guangzhou

来源：

Deng, Chang-Guang (dcg@163.com) | 1600年 / Beijing Institute of Aeronautical Materials (BIAM)卷 / 45期

关键词：

7YSZ; Plasma spray-physical vapor deposition; Thermal barrier coating; Thermal conductivity;

D O I：

10.11868/j.issn.1001-4381.2015.001109

中图分类号：

学科分类号：

摘要：

The 7YSZ thermal barrier coating was prepared with three different process parameters by plasma spraying-physical vapor deposition (PS-PVD). The phase structure and microstructure of the coating were analyzed using XRD and SEM methods, and the thermal conductivity of coating was measured under different temperatures using laser pulse method. The results show that PS-PVD technology can prepare YSZ thermal barrier coating with different structures of columnar section, dense lamellar and column-particle mixed structure with surface “cauliflower” shape or undulating peaks by adjusting the process parameters, such as the current and plasma gas composition. Phase structure of 7YSZ coating is transformed from m-ZrO2 powder to t-ZrO2 coating in the process of preparation and stays in room temperature. The thermal conductivity of 7YSZ coating increases with the rising of temperature between 700-1100℃, the columnar crystal coating with higher porosity can effectively reduce the thermal conductivity of coating and the thermal conductivity is 1.0-1.2W·m-1·K-1; while layered crystal coating is dense with relatively higher thermal conductivity. © 2017, Journal of Materials Engineering. All right reserved.

引用

页码：1 / 6

页数：5

共 19 条

[1] Liu C.B., Lin F., Jiang X.L., Current situation and development trend of thermal barrier coatings, China Journal of Nonferrous Metals, 17, 1, pp. 1-13, (2007)
[2] Cao X.Q., Thermal Barrier Coating Materials, (2007)
[3] Szymanski K., Goral M., Kubaszek T., Et al., Microstructure of TBC coatings deposited by HVAF and PS-PVD methods, Solid State Phenomena, 227, pp. 373-376, (2015)
[4] Chen Q.Y., Li C.X., Zhao J.Z., Et al., Microstructure of YSZ coatings deposited by PS-PVD using 45kW shrouded plasma torch, Materials & Manufacturing Processes, 31, 9, pp. 1183-1191, (2015)
[5] Chen Q.Y., Peng X.Z., Yang G.J., Et al., Characterization of plasma jet in plasma spray-physical vapor deposition of YSZ using a <80 kW shrouded torch based on optical emission spectroscopy, Journal of Thermal Spray Technology, 24, 6, pp. 1038-1045, (2015)
[6] Zhang X.F., Zhou K.S., The PS-PVD deposition 7YSZ coating deposition mechanism and corrosion failure mechanism of CMAS, Journal of Inorganic Materials, 30, 3, pp. 287-293, (2015)
[7] Kotowski S., Sieniawski J., Marcin D., Microstructure and isothermal oxidation resistance of thermal barrier coatings deposited by LPPS, CVD and PS-PVD methods on Inconel 617 nickel superalloy, Solid State Phenomena, 227, pp. 325-328, (2015)
[8] Zhang X., Zhou K., Liu M., Et al., Toughness and elasticity behaviors in nano-structured 7wt.%Y2O3 stabilized ZrO2 coating, Surface & Coatings Technology, 276, pp. 316-319, (2015)
[9] Niessen K.V., Gindrat M., Plasma spray-PVD: a new thermal spray process to deposit out of the vapor phase, Journal of Thermal Spray Technology, 20, 4, pp. 736-743, (2011)
[10] Johnston A.L., Hall A.C., Mccloskey J.F., Effect of process inputs on coating properties in the twin-wire arc zinc process, Journal of Thermal Spray Technology, 22, 6, pp. 856-863, (2013)

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