孔耀,刘宗德,李斌.铜基耐蚀合金熔覆层的制备及耐蚀特性[J].稀有金属材料与工程,2021,50(8):2694~2699.[Kong Yao,Liu Zongde,Li Bin.Preparation and Corrosion Resistance of Laser-Cladded Cu-Based Alloy Coatings on Q235 Steel[J].Rare Metal Materials and Engineering,2021,50(8):2694~2699.]
铜基耐蚀合金熔覆层的制备及耐蚀特性
投稿时间:2020-06-17  修订日期:2021-07-13
中文关键词:  铜基合金  激光熔覆  显微结构  耐蚀性能
基金项目:Equipment Pre-research Fund(No.61409220202)
中文摘要:
      采用光纤激光器,在不同功率下在Q235钢表面制备了铜基合金熔覆层。利用扫描电镜、能谱仪、X射线衍射仪和电化学工作站分别对熔覆层的显微结构、相组成及耐蚀性能进行表征。结果表明,熔覆层与基体冶金结合。熔覆层底部为胞状组织,中部为树枝晶和柱状晶。熔覆层主要包含富铜Cu(Ni, Fe)固溶体和富铁Ni(Cr, Mo, Fe)固溶体。由于其最高的自腐蚀电位和最低的自腐蚀电流,2000 W功率下所制备的熔覆层表现出最好的耐蚀性能。
Preparation and Corrosion Resistance of Laser-Cladded Cu-Based Alloy Coatings on Q235 Steel
英文关键词:copper-based coating  laser cladding  microstructure  corrosion resistance
英文摘要:
      Copper-based coatings were prepared on the surface of Q235 steel by fiber laser under different powers. Microstructure, phase composition, corrosion resistance of the coatings were revealed by scanning electron microscopy (SEM) equipped with energy dispersive spectrometry (EDS), X-ray diffraction (XRD) and electrochemical workstation, respectively. Results show that the coatings are well bonded to the substrate. The coating microstructure consists of cellular, coarse dendrites, fine dendrites and columnar grain structure from the bottom to the top. The coatings mainly contain two phases including Cu(Ni,Fe) and Ni(Cr,Mo,Fe) solid solution. The coating with two layers prepared under 2000 W exhibits optimal corrosion resistance due to its highest corrosion potential and lowest corrosion current density.
作者单位E-mail
孔耀 华北电力大学 电站能量传递转化与系统教育部重点实验室北京 102206 ky@ncepu.edu.cn 
刘宗德 华北电力大学 电站能量传递转化与系统教育部重点实验室北京 102206  
李斌 华北电力大学 电站能量传递转化与系统教育部重点实验室北京 102206  
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