磁场对钛合金热浸铝涂层的组织和性能的影响  

Effect of Magnetic Field on Microstructure and Properties of Hot Dip Aluminum Coating on Titanium Alloy

作　　者：李勇[1] 王秋林[1] 门正兴[1] 赵玉林 张宏[3] Li Yong;Wang Qiulin;Men Zhengxing;Zhao Yulin;Zhang Hong(Chengdu Aeronautic Polytechnic,Chengdu 610100,China;不详)

机构地区：[1]成都航空职业技术学院 [2]电子科技大学物理学院 [3]四川大学破坏力学与工程防灾减灾四川省重点实验室

出　　处：《工具技术》2023年第11期40-44,共5页Tool Engineering

基　　金：国家自然科学基金面上项目(12272245);四川大学—自贡政府战略合作支持项目(2019CDZG-4);四川省自然科学基金项目(2023NSFSC0407);成都航空职业技术学院科研项目(ZZX0623074)。

摘　　要：针对TA15钛合金表面热浸铝涂层的裂纹问题,研究了在热浸铝涂层成形凝固过程中施加交变电磁场及后期热扩散处理对涂层组织和性能的影响。采用能谱仪(EDS)、扫面电镜(SEM)和XRD分析镀层的形貌、微观结构以及微区元素分布,利用显微硬度计测试了涂层的显微硬度,探讨了交变电磁场对金属间化合物涂层组织结构的影响。试验结果表明:该工艺制备的涂层厚度较传统涂层未发生变化,但是与基体结合良好,裂纹明显减少或消失。施加较强交变电磁场后,当电流强度为8A时,涂层裂纹明显减少;当电流强度为10A和12A时,涂层与基体结合良好,未发现明显裂纹,组织和性能得到改善,可获得质量较好的涂层。Aiming at the crack problem of the hot dip aluminum coating on the surface of TA15 titanium alloy,the effects of alternating electromagnetic field and thermal diffusion treatment on the microstructure and properties of the coating during the forming and solidification process are studied.The morphology,microstructure and element distribution of the coating are analyzed by energy dispersive spectroscopy(EDS),scanning electron microscope(SEM)and XRD.The microhardness of the coating is tested by microhardness tester.The effect of alternating electromagnetic field on the microstructure of intermetallic compound coating is discussed.The experimental results show that the thickness of the coating prepared by this process does not change compared with the traditional coating,but it binds well with the matrix,and the cracks are obviously reduced or disappeared.When the current intensity is 8A,the crack of the coating is reduced obviously.When the current intensity is 10A and 12A,the coating is well bonded with the matrix,no obvious cracks are found,the microstructure and properties are improved,and the coating with good quality can be obtained.

关 键 词：热浸铝 温度 电磁场 裂纹 

分 类 号：TG174.4[金属学及工艺—金属表面处理] TH161.14[金属学及工艺—金属学]