真空退火对镁合金表面Ti涂层组织和性能的影响

张栩东, 付广艳, 周尧, 陈兆苏, 郁万民, 王思彬, 陆浩

doi:10.16577/j.issn.1001-1560.2022.0317

材料保护 >

2022 , Vol. 55 >Issue 11: 115 - 118

DOI: https://doi.org/10.16577/j.issn.1001-1560.2022.0317

工艺探讨

真空退火对镁合金表面Ti涂层组织和性能的影响

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沈阳化工大学机械与动力工程学院

张栩东(2001-)，主要研究方向为金属腐蚀与防护，电话：15524229118，E - mail：zxd4333@126.com

收稿日期: 2022-05-21

修回日期: 2022-06-15

录用日期: 2022-07-06

网络出版日期: 2023-12-26

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Effect of Vacuum Annealing on the Microstructure and Properties of Ti Coating on Magnesium Alloys

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(School of Mechanical and Power Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China)

Received date: 2022-05-21

Revised date: 2022-06-15

Accepted date: 2022-07-06

Online published: 2023-12-26

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摘要

为改善镁合金的耐腐蚀性，在镁合金AZ91D表面磁控溅射Ti涂层，通过点滴试验对比分析了其耐腐蚀性能，采用扫描电镜(SEM)和X射线衍射仪(XRD)分析了不同退火温度下涂层的形貌以及相组成。结果表明：真空退火处理可以降低涂层的孔隙率，提高涂层的致密度和结晶度，降低涂层的内部残余应力，提高涂层的耐腐蚀性能，随着真空退火温度的升高，涂层中晶粒尺寸增大，涂层变得粗糙，涂层中粒子出现团聚现象，300 ℃真空退火时，涂层出现裂纹。

关键词： AZ91D镁合金; 磁控溅射; 钛涂层; 真空退火; 耐腐蚀性能

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张栩东, 付广艳, 周尧, 陈兆苏, 郁万民, 王思彬, 陆浩 . 真空退火对镁合金表面Ti涂层组织和性能的影响[J]. 材料保护, 2022 , 55(11) : 115 -118 . DOI: 10.16577/j.issn.1001-1560.2022.0317

Abstract

In order to improve the corrosion resistance of magnesium alloys, Ti coatings were prepared on the surface of AZ91D magnesium alloy by means of magnetron sputtering. The coatings’ corrosion resistances were compared and analyzed by drop test. The morphology and phase composition of the coatings prepared at different annealing temperatures were analyzed by scanning electron microscopy (SEM) and X - ray diffraction (XRD). Results showed that the vacuum annealing treatment could reduce the porosity of the coating, increase the density and crystallinity of the coating, reduce the residual stress in the coating, and improve the corrosion resistance of the coating. With the increase of vacuum annealing temperature, the grain size in the coating increased, the coating became rough, and particle agglomeration appeared in the coating. When the vacuum annealing temperature was 300 ℃, cracks appeared in the coating.

Key words： AZ91D magnesium alloy; magnetron sputtering; titanium coating; vacuum annealing; corrosion resistance

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