Effect of Processing Parameters on Microstructure and Properties of Steel-based Chromium Plating
To solve the problem about the surface corrosion and wear of steel parts in the transmission system of helicopter, based on chromium plating technology of plating process ,the chromium plating samples were prepared with three better groups of temperature and current density by means of different formula of chromium plating bath. The X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to study the microstructure and composition of specimen coating. The experimental results show that the crystalline structure of chromium layer is body centered cubic and the crystal is stable, the performances from different specimens including rigidity, thickness, corrosion resistance, antifriction and hydrogen brittleness were tested, the effect of hard chromium plating technology parameter (T,I) on microstructure and properties of steel-based chromium plating was also investigated. The result indicates that: 45～50A/dm2 current density and 58～60℃ temperature of plating coat are optimal condition for obtaining higher brightness, rigidity and thickness, lower porosity, better corrosion resistance and antifriction.
Chromium plating process Microstructure Transmission system
TANG Hui WANG Jia ZHAO Yuan
School of Material Science and Engineering, Harbin University of Science and Technology, Harbin, 150040, China
国际会议
沈阳
英文
22-26
2009-08-24（万方平台首次上网日期，不代表论文的发表时间）