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.
几种热喷涂封严涂层的冲蚀磨损行为研究
Research on Erosion Wear Behaviorof Several Seal Coatings Prepared by Thermal Spraying
  
DOI:10.3969/j.issn.1674-7127.2019.03.009
中文关键词:  热喷涂  封严涂层  冲蚀磨损  冲蚀数
英文关键词:Thermal spraying  Seal coating  Erosion wear  Erosion rate
基金项目:
              
作者单位
刘琦峰 北京矿冶研究总院
章德铭 北京矿冶研究总院,北京矿冶科技集团有限公司
程旭莹 北京矿冶研究总院,北京矿冶科技集团有限公司
刘建明 北京矿冶研究总院,北京矿冶科技集团有限公司
刘通 北京矿冶研究总院,北京矿冶科技集团有限公司
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中文摘要:
      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。
英文摘要:
      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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