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.
出处
《煤矿机械》
北大核心
2012年第5期58-60,共3页
Coal Mine Machinery
基金
国家科技支撑项目(2007BAB13B01)
