高速火焰喷涂Ni60B涂层抗蚀性能研究
Study on Corrosion Resistance of Ni60B Coating Prepared by High Velocity Flame Spraying
刘晓明1,2, 董俊慧2, 徐润生3, 吴子晨1
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作者单位：1. 内蒙古电力科学研究院, 内蒙古 呼和浩特 010020; 2. 内蒙古工业大学, 内蒙古 呼和浩特 010051; 3. 内蒙古电力(集团)有限责任公司, 内蒙古 呼和浩特 010020
中文关键字：高速火焰喷涂； Ni60B涂层； 抗蚀性能
英文关键字：high velocity flame spraying(HVFS); Ni60B coating; corrosion resistance
中文摘要：在20钢基体上利用高速火焰喷涂Ni60B，同时对喷涂后的试样进行涂盐腐蚀试验。利用数学的方法对腐蚀动力学曲线进行拟合，并利用先进的分析测试手段如扫描电镜、能谱分析及X射线衍射等对其抗腐蚀机理进行探讨。结果表明：涂层的腐蚀速率随时间的增加而下降，涂层表面连续、致密的Cr2O3、NiO有效地阻止了涂层被进一步腐蚀。
英文摘要：The high velocity flame spraying(HVFS) Ni60B was made on 20 steel. At the same time, hot corrosion experiment was done. The corrosion dynamics curve of the sample was simulated by mathematic method, and the corrosion resistance mechanism was researched by SEM, EDS and XRD. The results show that the corrosion velocity of HVFS Ni60B coating decreases with the increase of corrosion time. The seriate and compact Cr2O3 and NiO film on the coating surface prevents the corrosion from taking place sequentially.