孙成琪,安连彤,高阳

• 1:广东海洋大学海运学院
• 2:大连海事大学交通运输装备与海洋工程学院

摘要(Abstract)：

【目的】分析超低压下不同气体产生的热喷涂等离子射流特性与制备涂层之间的关系。【方法】以氩氢和氩氦2种混合气体产生的热喷涂等离子射流,并使用这2种混合气体在不同电流强度下沉积氧化钇稳定氧化锆(YSZ)涂层,使用扫描电镜观察涂层微观结构。【结果】超低压下,氩氢等离子射流中的温度要高于氩氦等离子体射流,而氩氦等离子射流中的黏度要大于氩氢等离子体射流;氩氦等离子体可以制备出的全纳米等轴晶的YSZ涂层,功率增加,涂层中的晶粒变大,氩氢等离子体制备的YSZ涂层是由大颗粒的等轴晶和未熔化的粉末团以及大的裂纹和气孔组成。【结论】氩氦等离子射流更有利于均匀一致等轴晶结构YSZ涂层的制备。

关键词(KeyWords)： 超低压等离子喷涂;氧化钇稳定氧化锆;微观结构;等离子气体成分

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(51172033);; 湛江市非资助科技攻关计划项目(2014B01060);; 广东海洋大学创新强校项目(GDOU2016050201);; 大连海事大学船机修造工程交通行业重点实验室开放课题(ZCJX2201302)

作者(Author): 孙成琪,安连彤,高阳

参考文献(References)：

• [1]GAO Y,YANG D M,SUN C Q,et al.Deposition of YSZcoatings in a chamber at pressures below 100 Pa using low-power plasma spraying with an internal injection powder feeding[J].Journal of Thermal Spray Technology,2013,22(7):1247-1253.
• [2]MAUER G,RAUWALD K H,MUCKE R,et al.Monitoring and improving the reliability of plasma spray processes[J].Journal of Thermal Spray Technology,2017,26(6):799-810.
• [3]MAUER G,VABEN R,STOVER D.Thin and dense ceramic coatings by plasma spraying at very low pressure[J].Journal of Thermal Spray Technology,2010,19(1-2):495-501.
• [4]KONSTANTIN V N,GINDRAT M.Plasma Spray-PVD:A New Thermal Spray Process to Deposit Out of the Vapor Phase[J].Journal of Thermal spray Technology,2011,20(4):736-743.
• [5]HOSPACH A,GEORG M,ROBERT V,et al.Characteristics of ceramic coatings made by thin film low pressure plasma spraying[J].Journal of Thermal Spray Technology,2012,21(3-4):435-440.
• [6]MAUER G,HOSPACH A,ZOTOV N,et al.Process conditions and microstructures of ceramic coatings by gas phase deposition based on plasma spraying[J].Journal of Thermal Spray Technology,2013,22(2-3):83-89.
• [7]ENRICO T,MARCO B,EMANUELE S,et al.Schlieren imaging:a powerful tool for atmospheric plasma diagnostic[J].Techniques and Instrumentation,2018,5(4):1-23.
• [8]COUDERT J F,PLANCHE M P,FAUCHAIS P.Velocity measurement of D.C.Plasma Jets based on arc root fluctuations[J].Plasma Chemical and Plasma Processing,1995,15(a):47-70.
• [9]JANISSON S,VARDELLE A,COUDERT J F,et al.Plasma spraying using Ar-He-H2 gas mixtures[J].Journal of Thermal Spray Technology,1999,8(4):545-552.
• [10]PATEYRON B,ELCHINGER M F,DELLUC G.,et al.Thermodynamic and transport properties of ar-h2 and ar-he plasma gases used for spraying at atmospheric pressureⅠ:properties of the mixtures[J].Plasma Chemistry and Plasma Processing,1992,12(4):421-448.
• [11]GAO Y,YANG D M,GAO J Y.Characteristics of a plasma torch designed for very low pressure plasma spraying[J].Journal of Thermal Spray Technology,2012,21(3/4):740-744.
• [12]SEMENOV S,CETEGEN B.Spectroscopic temperature measurements in direct current arc plasma jets used in thermal spray processing of materials[J].Journal of Thermal Spray Technology,2001,10(2):326-336.
• [13]陈熙.热等离子体的传热与流动[M].北京:科学出版社,2009:34-43.
• [14]曹学强.热障涂层材料[M].北京:科学出版社,2007:48-67.