Preparation and Investigation of High Emissivity Coatings Prepared by Plasma Spraying
The high emissivity coating was deposited by Air Plasma Spraying (APS).Ni2O3,Cr2O3 were the main raw materials in this study.The feedstock powder was prepared by spray drying and post-sintered at 1420℃ for 2 hours.The microstructure,phase structure,flowability and bulk density of the plasma sprayed powder were characterized.The microstructure,bond strength and infrared emissivity of the high emissivity coating were also analyzed in this paper.The results reveal that the powder before and after sintering presents good flowability and is suitable for plasma spraying process.A dense coating with the bond strength of 28.14MPa was prepared successfully.The normal emissivity of the coating in all waveband is 0.87 at the temperature of 300℃,600℃,900℃,1000℃,1100℃ and 1200℃.
high emissivity coatings plasma spraying
Can Wang Quansheng Wang Xiankai Sun
School of Materials Science and Engineering,Beijing Institute of Technology,Beijing,China
国际会议
The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))
厦门
英文
1062-1065
2011-11-04（万方平台首次上网日期，不代表论文的发表时间）