【作者】 程从前； 王子健； 孙腾达； 李君艳； 赵晓燕； Ali Dilshad；

【Author】 CHENG Cong-qian;WANG Zi-jian;SUN Teng-da;Li Jun-yan;Zhao Xiao-yan;Ali Dilshad;School of Materials Science and Engineering,Dalian University of Technology;

【机构】 大连理工大学材料科学与工程学院；

【摘要】 通过发展超耐蚀、绿色高效钝化技术来提升不锈钢高温高盐雾环境下耐蚀能力,成为热带滨海工程用不锈钢零部件腐蚀防护中关键环节。本文以316L不锈钢为对象,提出了湿度增强的不锈钢激光钝化技术,揭示了典型工艺参数变化对不锈钢耐蚀性的影响规律,阐明了激光钝化不锈钢表面保护性氧化物的成分与完整性特征,获得了具有超耐蚀、可重复的激光钝化工艺;盐雾腐蚀和海南滨海自然环境暴露试验表明,与常规钝化样品比较,激光钝化不锈钢样品具有更小点蚀坑和更低的钝化膜损伤。更多还原

【Abstract】 Developing green passivation technology with high corrosion resistance and high efficiency is becoming interesting for corrosion protection of stainless steels,which are used for costal engineering in tropical marine atmosphere.This paper reported a high-humidity-assisted laser passivation behavior of 316L stainless steel.The effect of laser parameter and relative humidity on the corrosion resistance of the steel has been explored.The typical preformed oxide film after the laser passivation has been analyzed.Finally a optimum parameter of the laser passivation has been achieved.Based on salt frog test and coastal onsite exposure test,the laser passivation has been proved superior corrosion resistance with less pits and minor degradation of passive film,compared to general chemical passivation.更多还原