Nanocrystalline TiN Coating Prepared by Reactive Plasma Spraying
A gas-tunnel plasma spraying gun was self-designed. The titanium powders and nitrogen gas were used as the reactants to produce dense TiN coating by means of the reactive plasma spraying (RPS) technique. RPS is a promising technique that enables the fabrication of dense composite coatings with a metallic or an intermetallic matrix and finely dispersed ceramic phases. The TiN coating is of great thickness (> 500 μm) and composed of nanocrystallities. In this respect, a new nano-materials fabrication technology was developed. The nanocrystalline TiN coating was examined using XRD, TEM and HRTEM. Results show that the coating is of well-stoichiometry, which is composed of TiN crystals of about 50-70nm in diameter, as well as the amorphous TiN phase. The nanocrystallities are separated by small-angle (about 7) grain boundaries.
nanocrystalline TiN coating reactive plasma spray
FENG Wen-ran ZHOU Hai YANG Ying-ge ZENG Dong-mei LU Yi-min WAN Han-cheng
Department of Materials Science and Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China
国际会议
沈阳
英文
201-205
2009-08-24（万方平台首次上网日期，不代表论文的发表时间）