Ce对高铝青铜超音速等离子喷涂层组织结构的影响

发布时间：2018-03-08 08:16

本文选题：高铝青铜粉体　切入点：稀土　出处：《兰州理工大学学报》2015年06期 　论文类型：期刊论文

【摘要】：将稀土Ce和高铝青铜粉体通过研磨混合,采用超音速等离子喷涂技术制备含稀土Ce的高铝青铜合金粉体涂层,采用XRD、SEM、EDS等手段对不同铈含量的高铝青铜合金粉体喷涂层表面组织、微观应力和界面元素扩散进行观察和分析,研究微量稀土元素铈对高铝青铜合金粉体涂层组织结构和界面元素扩散的影响.结果表明:粉体研磨后,铈粉以片状和碎块状方式粘结在高铝青铜粉体颗粒表面,并且出现微合金化现象.高铝青铜合金粉体的喷涂流动性和熔覆性随含铈量的增加而变大,涂层表面存在微观压应力,并随着含铈量的增加压应力呈现先降低后增加的趋势.随铈含量的增加,涂层合金与基体表面润湿性能增强,界面处Cu、Al元素贫化现象减弱.
[Abstract]:The rare earth ce and high aluminum bronze powder were mixed by grinding and the high aluminum bronze alloy powder coating containing rare earth ce was prepared by supersonic plasma spraying technology. The surface structure of the high aluminum bronze alloy powder sprayed with different cerium content was studied by means of XRDX SEMMAN EDS and so on. The microstress and interfacial element diffusion were observed and analyzed, and the effect of trace rare earth element cerium on microstructure and interfacial element diffusion of high aluminum bronze alloy powder coating was studied. Cerium powder is bonded on the surface of high aluminum bronze powder in the form of flake and broken block, and there is a phenomenon of microalloying. The spray fluidity and cladding property of high aluminum bronze alloy powder increase with the increase of cerium content, and the surface of the coating has micro compressive stress. With the increase of cerium content, the compressive stress decreases first and then increases. With the increase of cerium content, the wettability of the coating alloy increases with the increase of cerium content, and the depletion of Cu-Al at the interface decreases.
【作者单位】：兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室;兰州交通大学化学与生物工程学院;
【基金】：国家自然科学基金(51165021) 国家国际科技合作项目(2013DFR50790)
【分类号】：TG174.4

【参考文献】