Effects of Strong Carbide-forming Elements on Low Temperature Salt-bath Chromizing

摘要：

The microstructure, phase structure, white layer thickness and chromium concentration, microhardness of the chromized layer of T10 steel and 3Cr2W8V steel by low temperature salt-bath chromizing with plasma nitriding are contrasted. The chromizing process is investigated by means of optical microscopy (OM), scanning electron microscopy (SEM), X-ray diffraction (XRD). Results show that the strong carbide-forming elements (Cr, W, V) obstruct the diffusion of chromium and carbon, the white layer thickness and microhardness, surface chromium concentration of the chromized layer are reduced. A chromized layer of T10 steel with average 7.3u.m in thickness, 84.47％ in surface chromium concentration and 1300HV-1400HV in microhardness is formed on the substrate by chromizing at 610℃ for 6h, as compared to the chromized layer of 3Cr2W8V steel with average 3.3um in thickness, 74.27％ in surface chromium concentration and 1200HV-1300HV in microhardness.

关键词： strong carbide-forming elements low temperature salt-bath chromizing plasma nitriding

作者: JinlingYe Feng Ye

作者单位: Department of Mechanical Engineering,Guangdong Technical College of Water Resources and Electric Eng School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 51064

会议类型: 国际会议

会议名称: the 2011 International Conference on Key Engineering Materials(ICKEM 2011)(2011关键工程材料国际会议)

会议地点: 三亚

会议语种:英文

页码: 646-650

在线出版日期: 2011-03-25（万方平台首次上网日期，不代表论文的发表时间）