纳米Fe-Al/Cr_(3)C_(2)复合涂层高温腐蚀动力学曲线拟合方程研究  

Study on Fitting Equation of High Temperature Corrosion Kinetics Curve of Nano Fe⁃Al/Cr_(3)C_(2) Composite Coating

作　　者：刘晓明 杨静 马文 LIU Xiaoming;YANG Jing;MA Wen(Inner Mongolia Power(Group)Co.,Ltd.,Inner Mongolia Electric Power Research Institute Branch,Hohhot 010020,China;Inner Mongolia Key Laboratory of Thin Film and Coatings,Hohhot 010051,China;School of Chemical Engineering and Technology,Sun Yat-Sen University,Zhuhai 519082,China;Inner Mongolia University of Technology,Hohhot 010051,China)

机构地区：[1]内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司,呼和浩特010020 [2]内蒙古自治区薄膜与涂层重点实验室,呼和浩特010051 [3]中山大学化学工程与技术学院,广东珠海5190824 [4]内蒙古工业大学,呼和浩特010051

出　　处：《内蒙古电力技术》2024年第6期95-101,共7页Inner Mongolia Electric Power

基　　金：内蒙古电力集团(有限)责任公司内蒙古电力科学研究院分公司科技项目“纳米功能涂层在线路材料表面制备及性能研究”(2023-ZC-1-02)。

摘　　要：针对内蒙古地区电力设备材料腐蚀情况较为严重的问题,提出利用抗腐蚀性能优异的纳米复合涂层作为设备安全稳定运行的重要技术保证。制备纳米金属间化合物Fe-Al/Cr_(3)C_(2)复合涂层并测试其抗高温腐蚀性能,对不同类型高温腐蚀动力学曲线拟合方程进行对比研究并优选最佳拟合方程类型。自主研发的造粒系统,可成功地对具有高活性的纳米Fe粉、纳米Al粉、纳米Cr_(3)C_(2)粉组成的复合喷涂粉体进行团聚处理;采用微米纳米喷涂材料互掺的方式,组合产生5组复合喷涂材料并利用高速热喷涂方法制备出复合涂层,对其腐蚀动力学曲线进行拟合分析并推导出复合涂层的腐蚀速率方程。结果表明:采用微米、纳米喷涂材料按照质量百分比掺加的方法有助于评价纳米涂层的高温腐蚀性能,纳米Fe-Al/Cr_(3)C_(2)复合涂层的抗高温腐蚀性能显著高于其他Fe-Al/Cr_(3)C_(2)复合涂层,幂函数方程更适合纳米复合涂层腐蚀动力学曲线的拟合,其导数方程可推算出各复合涂层的腐蚀速率。Nano composite coatings,due to their excellent corrosion resistance,will provide important technical guarantees for the construction and safe and stable delivery of new energy bases in Inner Mongolia areas.Nano intermetallic compound Fe-Al/Cr_(3)C_(2) composite coatings are made and high-temperature corrosion resistance properties are test.The fitting equations of kinetics curves of different types of high temperature corrosion are compared and the best fitting equations are selected.Highly active nano Fe-Al/Cr_(3)C_(2) composite spraying materials are successfully made through the agglomerated pelletization system developed independently by ourselves.By high velocity flame spraying,five groups of Fe-Al/Cr_(3)C_(2) composite coatings containing different mass percentages are prepared on the surface of structural materials by High-Speed Flame Spraying method.The high-temperature corrosion resistance of the five groups of Fe-Al/Cr_(3)C_(2) composite coatings are compared and tested.The corrosion kinetics curves are fitted by parabola and power function respectively.The corrosion rate of each composite coating can be calculated by derivation of the corrosion kinetics fitting equation.The results show that high temperature corrosion resistance of nano-coatings is significantly higher than that of other Fe-Al/Cr_(3)C_(2) composite coatings,and the fitting effect of the corrosion kinetics curve is better by using the power function equation.

关 键 词：电力设备 高温腐蚀 纳米 Fe-Al/Cr_(3)C_(2) 复合涂层 拟合方程 

分 类 号：TM621[电气工程—电力系统及自动化] TU561.67[建筑科学—建筑技术科学]