电爆喷射沉积法制备Al涂层

doi:10.13251/j.issn.0254-6051.2023.07.043

金属热处理 ›› 2023, Vol. 48 ›› Issue (7): 259-265.DOI: 10.13251/j.issn.0254-6051.2023.07.043

电爆喷射沉积法制备Al涂层

周毅¹, 朱亮^1,2, 段靖邦³, 张爱华³, 周辉^1,2, 闫维亮¹

1.兰州理工大学材料科学与工程学院, 甘肃兰州 730050;
2.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, 甘肃兰州 730050;
3.兰州理工大学电气工程与信息工程学院, 甘肃兰州 730050

收稿日期:2022-12-05 修回日期:2023-05-12 出版日期:2023-07-25 发布日期:2023-09-04
通讯作者: 朱亮,教授,博士,E-mail:zhul@lut.edu.cn
作者简介:周毅(1995—),男,硕士研究生,主要研究方向为电爆喷涂工艺,E-mail:2548474161@qq.com。
基金资助:
国家自然科学基金(51765038);甘肃省教育厅优秀研究生“创新之星”项目(2021CXZX-432)

Preparation of Al coatings by electro-explosive spray deposition

Zhou Yi¹, Zhu Liang^1,2, Duan Jingbang³, Zhang Aihua³, Zhou Hui^1,2, Yan Weiliang¹

1. School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou Gansu 730050, China;
2. State Key Laboratory of Advanced Processing and Reuse of Nonferrous Metals, Lanzhou University of Technology, Lanzhou Gansu 730050, China;
3. School of Electrical Engineering and Information Engineering, Lanzhou University of Technology, Lanzhou Gansu 730050, China

Received:2022-12-05 Revised:2023-05-12 Online:2023-07-25 Published:2023-09-04

摘要/Abstract

摘要： 提出了带载丝约束电爆法制备Al涂层的新方法。该方法是以聚乙烯带为载体,将Al丝加载在聚乙烯带上自动连续送进爆炸腔发生爆炸制备涂层,继而研究不同工艺参数下的Al涂层。结果表明,储能电容器上的初始充电电压为9.375 kV、沉积距离26 mm时,涂层表面致密、均匀,沉积效率较高(约为51%);涂层表面粗糙度R_a由2.51 μm减少到了1.29 μm;涂层硬度最高为116.8 HV、厚度约为200 μm,涂层与基体为典型的冶金结合;根据GB/T 5270—2005《金属基体上的金属覆盖层电沉积和化学沉积层附着强度试验方法》进行弯曲试验,结果表明,涂层与基体没有发生撕裂、脱落、起皮现象,涂层与基体结合强度较好。因此利用带载丝约束电爆法可以成功实现Al涂层的制备。

关键词: 带载丝约束电爆法, Al涂层, 结合强度

Abstract: A method for preparing Al coating by tape-loaded wire-confined electric explosion method was proposed. Polyethylene tape as a carrier was used to load Al wire and to send it automatically and continuously into the explosion cavity to explode and prepare Al coating, and then the Al coatings under different process parameters were investigated. The results show that when the initial charging voltage of energy storage capacitor is 9.375 kV and the deposition distance is 26 mm, the surface of the coating is dense and uniform, and the deposition efficiency is relatively high (about 51%), the surface roughness R_a of the coating is reduced from 2.51 μm to 1.29 μm, the maximum hardness of the layer is 116.8 HV and the thickness is about 200 μm. The coating and the substrate are typical metallurgical bonding. By the bending test carries out according to the national standard GB/T 5270—2005 “Metallic coatings on metallic substrates—Electrodeposited and chemically deposited coatings-Review of methods available for testing adhesion”, the result shows that there is no tearing, peeling or debonding between the coating and the substrate, which indicates a good adhesion strength between the coating and the substrate. It is concluded that the preparation of Al coating can be successfully realized by the method of restrained electric explosion with carrier wire.

Key words: load wire restrained electric explosion method, Al coating, bonding strength

中图分类号:

TG174
TG146

周毅, 朱亮, 段靖邦, 张爱华, 周辉, 闫维亮. 电爆喷射沉积法制备Al涂层[J]. 金属热处理, 2023, 48(7): 259-265.

Zhou Yi, Zhu Liang, Duan Jingbang, Zhang Aihua, Zhou Hui, Yan Weiliang. Preparation of Al coatings by electro-explosive spray deposition[J]. Heat Treatment of Metals, 2023, 48(7): 259-265.

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电爆喷射沉积法制备Al涂层

Preparation of Al coatings by electro-explosive spray deposition

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