张淑婷.Si对CoCrAlY涂层抗热腐蚀性能的影响[J].稀有金属材料与工程,2017,46(10):2807~2811.[zhang shu ting.Effect of Si on Hot Corrosion Resistance of CoCrAlY Coating[J].Rare Metal Materials and Engineering,2017,46(10):2807~2811.]
Si对CoCrAlY涂层抗热腐蚀性能的影响
投稿时间:2015-11-02  修订日期:2015-12-29
中文关键词:  MCrAlSiY  涂层  氧化  热腐蚀
基金项目:自然科学基金青年基金项目(51201012)、国际合作项目(2015DFA51530)
中文摘要:
      摘要:本文针对CoCrAlSiY涂层的抗热腐蚀性能,采用HVOF方法制备了涂层,用75wt.%Na2SO4+25wt.%NaCl热盐涂敷的方法,对比了不同Si含量(0、2%及5%)CoCrAlSiY涂层在900℃条件下的抗热腐蚀性能。研究结果表明:随着反应温度升高,涂层的平均腐蚀穿透深度呈增加趋势;随着Si含量上升,涂层的平均腐蚀穿透深度逐渐下降。腐蚀后CoCrAlSiY涂层内生成了高熔点的金属硅化物CrSi,有助于提高涂层的抗腐蚀性能。
Effect of Si on Hot Corrosion Resistance of CoCrAlY Coating
英文关键词:MCrAlSiY  Coating  Oxidation  Hot corrosion resistance
英文摘要:
      Abstract: The hot corrosion resistance of CoCrAlSiY coating with different Si concentrations (0%, 2% and 5%) at 900 ℃ was discussed by using hot salt coating method with a mixed salt of 75wt% Na2SO4+25wt% NaCl. The CoCrAlSiY coating was prepared by HVOF method. The results show that the average corrosion penetration depth of coating increases with the rising temperature, while the increasing Si concentration decreases the average corrosion penetration depth of coating. Furthermore, CrSi, a high melting point metal silicide, is generated inside the CoCrAlSiY corrosion coating. Thus it is beneficial for improving the corrosion resistance of coating.
作者单位E-mail
张淑婷 北京矿冶研究总院 shutingzhang007@163.com 
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