| 几种热喷涂封严涂层的冲蚀磨损行为研究 |
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| 引用本文： | 刘琦峰,章德铭,程旭莹,刘建明,刘通.几种热喷涂封严涂层的冲蚀磨损行为研究[J].热喷涂技术,2019,11(3):57-62. |
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| 作者姓名： | 刘琦峰 章德铭 程旭莹 刘建明 刘通 |
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| 作者单位： | 北京矿冶研究总院,北京矿冶研究总院，北京矿冶科技集团有限公司,北京矿冶研究总院，北京矿冶科技集团有限公司,北京矿冶研究总院，北京矿冶科技集团有限公司,北京矿冶研究总院，北京矿冶科技集团有限公司 |
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| 摘 要： | 抗冲蚀性能是可磨耗封严涂层的重要性能之一。本文采用氧-乙炔火焰喷涂技术,在45#钢基体上分别制备了CuAl复合涂层、NiCr-Al复合涂层和NiCrFe/Al(基)复合涂层。利用自制的冲蚀试验机,研究了三种涂层在不同角度下的冲蚀行为,对冲蚀后涂层的表面形貌以及截面形貌进行了SEM观察,结果表明:相同工艺参数制备的三种涂层,CuAl复合涂层抗冲蚀性能最好,NiCr-Al复合涂层次之,NiCrFe/Al基复合涂层性能最差,软性材质hBN的加入不利于涂层抗冲蚀性。冲蚀角度对涂层的冲蚀磨损行为特征有显著影响。低冲蚀角度涂层的磨损行为主要表现为显微切削和疲劳剥落;高冲蚀角度时涂层的磨损行为主要表现为片状剥落。
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| 关 键 词： | 热喷涂 封严涂层 冲蚀磨损 冲蚀数 |
Research on Erosion Wear Behaviorof Several Seal Coatings Prepared by Thermal Spraying |
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| Qifeng Liu,Deming Zhang,Xuying Cheng,Jianming Liu and Tong Liu.Research on Erosion Wear Behaviorof Several Seal Coatings Prepared by Thermal Spraying[J].Thermal Spray Technology,2019,11(3):57-62. |
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| Authors: | Qifeng Liu Deming Zhang Xuying Cheng Jianming Liu and Tong Liu |
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| Affiliation: | Beijing General Research Institute of Mining and Metallurgy,Beijing General Research Institute of Mining and Metallurgy, BGRIMM Technology Group,Beijing General Research Institute of Mining and Metallurgy, BGRIMM Technology Group,Beijing General Research Institute of Mining and Metallurgy, BGRIMM Technology Group and Beijing General Research Institute of Mining and Metallurgy, BGRIMM Technology Group |
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| Abstract: | The erosion wear resistance is one of the most important properties of the abradable seal coating. CuAl composite coating, NiCr-Al composite coating and NiCrFe/Al composite coating were prepared on 45# steel substrate by oxygen-acetylene flame spraying. The erosion wear behavior of several abradable seal coatings under different erosion angels were investigated by a self-made sand erosion machine. The surface and cross-section morphology of different coatings were evaluated by SEM. The results show that the CuAl composite coating has the best erosion resistance, followed by NiCr-Al composite coating, and NiCrFe/Al composite coating has the worst performance. The addition of hBN marital is not good for the erosion wear resistance of the coating. The erosion angle has a significant effect on erosion wear behavior of coatings. The mainly characteristic of erosion behavior of the coating is micro-cutting and fatigue flaking at low erosion angle. The wear behavior is mainly flaking at high erosion angle. |
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| Keywords: | Thermal spraying Seal coating Erosion wear Erosion rate |
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