6Al3Mg镀层抑制层形貌及其对镀层附着力的影响

doi:10.13251/j.issn.0254-6051.2023.06.031

金属热处理 ›› 2023, Vol. 48 ›› Issue (6): 173-177.DOI: 10.13251/j.issn.0254-6051.2023.06.031

6Al3Mg镀层抑制层形貌及其对镀层附着力的影响

李研^1,2, 李铁军³, 刘广会^1,2, 徐呈亮^1,2, 秦汉成^1,2

1.首钢技术研究院, 北京 100043;
2.绿色可循环钢铁流程北京市重点实验室, 北京 100043;
3.首钢工学院, 北京 100043

收稿日期:2022-12-10 修回日期:2023-04-10 出版日期:2023-06-25 发布日期:2023-08-11
作者简介:李研(1984—),男,高级工程师,博士,主要研究方向为热镀锌工艺及装备,E-mail:liyan840304@126.com

Morphology of 6Al3Mg coating inhibition layer and its effect on coating adhesion

Li Yan^1,2, Li Tiejun³, Liu Guanghui^1,2, Xu Chengliang^1,2, Qin Hancheng^1,2

1. Shougang Research Institute of Technology, Beijing 100043, China;
2. Beijing Key Laboratory of Green Recyclable Process for Iron & Steel Production Technology, Beijing 100043, China;
3. Shougang Institute of Technology, Beijing 100043, China

Received:2022-12-10 Revised:2023-04-10 Online:2023-06-25 Published:2023-08-11

摘要/Abstract

摘要： 通过电化学剥离的方法去除钢表面6Al3Mg镀层并保留抑制层, 采用扫描电镜、电子探针等手段对比了镀层附着力良好试样与镀层附着力不良试样的抑制层形貌。结果发现, 6Al3Mg镀层产品抑制层形貌为颗粒状组织, 在镀层与基体界面位置, Si与Al元素呈现完全重合的状态, 由于镀层内部Al元素较多, 可采用Si元素的分布状态表征其抑制层形成情况。镀层附着力良好的试样, 其Si元素分布呈现连续状态, 抑制层形成良好, 通过扫描电镜可观察到密集的颗粒状抑制层;而镀层附着力不良的试样, Si元素分布不连续, 抑制层形成不良。

关键词: 6Al3Mg镀层抑制层, 附着力, 电化学剥离

Abstract: 6Al3Mg coating on the steel substrate was removed by electrochemical stripping but with the inhibition layer between the coating and the substrate retained. The morphologies of the inhibition layers between the specimens with good and with poor coating adhesion was compared by means of scanning electron microscope and electron probe. The results show that the morphology of the inhibition layers of the 6Al3Mg coating is granular, and that Si and Al elements completely coincide at the interface between the coating and the substrate. Due to the large amount of Al inside the coating, the distribution state of Si can be used to characterize the formation of the inhibition layer. For the specimens with good coating adhesion, the distribution of Si presents a continuous state, and the formation of inhibition layer is good, and dense granular inhibition layer can be observed by scanning electron microscope. While for the specimens with poor coating adhesion, the distribution of Si is discontinuous and the formation of inhibition layer is poor.

Key words: 6Al3Mg coating inhibition layer, adhesion, electrochemical stripping

中图分类号:

TG333.5⁺5

李研, 李铁军, 刘广会, 徐呈亮, 秦汉成. 6Al3Mg镀层抑制层形貌及其对镀层附着力的影响[J]. 金属热处理, 2023, 48(6): 173-177.

Li Yan, Li Tiejun, Liu Guanghui, Xu Chengliang, Qin Hancheng. Morphology of 6Al3Mg coating inhibition layer and its effect on coating adhesion[J]. Heat Treatment of Metals, 2023, 48(6): 173-177.

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6Al3Mg镀层抑制层形貌及其对镀层附着力的影响

Morphology of 6Al3Mg coating inhibition layer and its effect on coating adhesion

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