矿用不锈钢离子渗镀Ti-N组织结构及其腐蚀性研究  

Study on Structure and Corrosion Behavior of Ti-N Modified Layer on Stainless Steel with Plasma Surface Alloying Technique

作　　者：李建华 刘俊 高峰 

机构地区：[1]山西煤矿机械制造有限责任公司,太原030031

出　　处：《煤矿机械》2012年第5期58-60,共3页Coal Mine Machinery

基　　金：国家科技支撑项目(2007BAB13B01)

摘　　要：为了提高矿用不锈钢的表面性能,以满足其在强腐蚀环境下的服役要求,利用等离子表面合金化技术在不锈钢基体上制备了Ti-N改性层。借助扫描电镜、能谱仪和X射线衍射仪,对Ti-N改性层的表面形貌,显微组织,成分分布和相结构进行了分析和表征。利用电化学测试技术测定不锈钢及其Ti-N改性层在腐蚀介质中的极化曲线。结果表明:与不锈钢相比,Ti-N改性层具有更高的开路电位,更低的电流密度和腐蚀速率;渗镀Ti-N处理显著提高了不锈钢的耐蚀性。In order to obtain a high-performance surface on stainless steel of coal mine machine,which can meet requirements in highly-eroded environment,Ti-N modified layer was prepared on surface of stainless steel with plasma surface alloying technique.The surface morphology,microstructure,elements distribution and phases composition of coating were analyzed by using scanning electron microscope（SEM）,glow discharge optical emission spectrometer（GDOES） and X-ray diffraction（XRD） respectively.Electrochemical analysis techniques were employed to measure polarization curves of stainless steel substrate and the Ti-N coating in corrosion medium.The results revealed that： Ti-N coating had exhibited lower current density and corrosion rate in comparison with stainless steel substrate.In conclusion,Ti-N modified layer has significantly improved corrosion resistance of stainless steel.

关 键 词：氮化钛 不锈钢 腐蚀 等离子合金化 

分 类 号：TG174.445[金属学及工艺—金属表面处理]