文献类型：会议论文

英文题名：The Research of Yttria Stabilized Zirconia Coatings formed by a low Pressure Thermal Spraying Plasma Torch

作者：Sun, Chengqi[1]; An, Liantong[1]; Gao, Yan[2]

机构：[1] College of Navigation, Guang Dong Ocean University, Zhanjiang, China; [2] Key Laboratory of Ship-Machinery Maintenance, Dalian Maritime University, Dalian, China

会议论文集：2020 International Conference on Environment Science and Advanced Energy Technologies, ESAET 2020 - 2. Applied Materials

会议日期：January 18, 2020 - January 19, 2020

会议地点：Chongqing, China

语种：英文

外文关键词：Sprayed coatings - Yttrium oxide - Microhardness - Optical emission spectroscopy - Plasma spraying - Feedstocks - Spectroscopic analysis - Yttria stabilized zirconia

外文摘要：To enhance deposit efficiency and improve quality of the coatings of the Yttria stabilized zirconia (YSZ) formed by the thermal plasma spraying method. A new kind plasma touch with diverging-converging nozzle and an internal powder feedstock were designed. The optical emission spectroscopy method was used for evaluating powder molten and vaporized degrees. The results indicated that the plasma jet produced by the two kinds of plasma gases under the 700 a condition made the feedstock powder of YSZ vaporized partially, but different melting degrees. Denser column microstructure YSZ coatings were first successfully deposited at an arc current of 700 A by using Ar-He-H2 plasma gas. In the Ar-H2 plasma jet, the temperature is higher at the same axial distance. The micro-hardness of the coatings deposited by Ar-He-H2 plasma gases is higher. ? Published under licence by IOP Publishing Ltd.