摘要
采用超音速等离子喷涂可低成本、高效率制备钛涂层。采用响应曲面法(RSM)中的Box-Behnken(BBD)设计分析了Ar流量、功率、喷涂距离3个因素与超音速等离子射流中钛粒子飞行速度和温度的交互性,利用SEM和显微硬度计研究了钛涂层的微观结构和显微硬度。结果表明:建立的线性模型可靠,喷涂距离对粒子飞行速度和温度影响最大,且随喷涂距离增加粒子飞行速度减小温度增加,而Ar流量和功率对粒子飞行速度和温度的影响与喷涂距离相反。超音速等离子喷涂制备出的钛涂层硬度较低,且呈多孔结构,随粒子飞行速度增加孔隙率降低。
Titanium coating was prepared at low cost and high efficiency by supersonic plasma spraying, Using Box-Behnken （BBD） in response surface method （RSM）, the interaction between three factors of Ar flow, power and spray distance and Ti particle in-flight state in supersonic plasma jet were analyzed. Microstructure and microhardness of the titanium coating were investigated using SEM and microhardness tester. The results show that the established linear model is reliable. The spray distance has the greatest impact on the particle velocity and temperature. With the increase of the spray distance, the particle velocity decreases and the temperature increases. The effect of Ar flow and power on the particle velocity and temperature is opposite to that of the spray distance. The titanium coating prepared by supersonic plasma spraying has low hardness and porous structure, and the porosity decreases with the increase of the particle velocity.
作者
刘明
张伟
王海斗
王海军
刘天寅
LIU Ming;ZHANG Wei;WANG Haidou;WANG Haijun;LILT Tianyin(National Key Laboratory for Remanufacturing,Army Academy of Armored Forces,Beijing 100072,China;Institute of Remanufacturing Industy Technology,Jing-jin-ji,Hejian 062450,China;Beijing Ruiman Technology Co Ltd.,Beijing 100043,China;Baoji Xin Fu Quan Machinery and Technology Co.,Ltd.,Baoji 721008,China)
出处
《中国表面工程》
EI
CAS
CSCD
北大核心
2018年第5期142-149,共8页
China Surface Engineering
基金
国家自然科学基金(51535011)
国家重点研发计划(61328304)~~
关键词
超音速等离子喷涂
钛涂层
响应曲面
粒子速度
粒子温度
supersonic plasma spraying
titanium coating
response surface method
particle velocity
particle temperature
