Research on Microstructure and Properties of Diffusion Layer of Spray Aluminum

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• 作者：NIU Zhen-guoYE Hong
• 会议时间：2014-04-21
• 关键词：Spray aluminum ; Diffusion ; Microstructure ; Composition ; Properties
• 作者单位：College of Materials Science and Engineering, Chongqing University of Technology, Chongqing 400054, China
• 母体文献：2014(重庆)国际表面工程论坛暨第十二届全国表面工程·电镀与精饰年会论文集
• 会议名称：2014(重庆)国际表面工程论坛暨第十二届全国表面工程·电镀与精饰年会
• 会议地点：重庆
• 主办单位：中国表面工程协会
• 语种：chi

摘要

After diffusion processing of thermal spraying aluminum on 20# steel is discussed in this article.Variations of microstructure, composition as well as microhardness and corrosion resistance of diffusion layer of spray aluminum are explored by means of X-ray diffraction, scan electron microscopy (SEM) as well as electron probe microanalysis (EPMA).The result shows that diffusion layer of spray aluminum consists ofη phase (Fe2Al5) ,ζ phase (FeAl2) ,β2 phase (FeA1), β1 phase (Fe3Al) and αphase from surface to substrate.There are balanced transitions between phases.The layer has extra high hardness and corrosion resistance.