金属热处理 ›› 2022, Vol. 47 ›› Issue (7): 245-252.DOI: 10.13251/j.issn.0254-6051.2022.07.042

• 表面工程 • 上一篇    下一篇

磁控溅射和多弧离子镀制备Cr涂层Zr-4合金的微观结构和抗高温氧化性能

邹旸1, 刘世宏2   

  1. 1.新疆新华水电投资股份有限公司, 新疆 乌鲁木齐 830063;
    2.南华大学 机械工程学院, 湖南 衡阳 421001
  • 收稿日期:2022-04-01 修回日期:2022-05-26 出版日期:2022-07-25 发布日期:2022-08-12
  • 作者简介:邹 旸(1984—),男,高级工程师,博士,主要研究方向为核技术应用、核安全管理研究、信息技术应用,E-mail:19840414@qq.com

Microstructure and high temperature oxidation resistance of Cr-coated Zr-4 alloy prepared by magnetron sputtering and multi-arc ion plating

Zou Yang1, Liu Shihong2   

  1. 1. Xinjiang Xinhua Hydroelectric Investment Technology Co., Ltd., Urumqi Xinjiang 830063, China;
    2. School of Mechanical Engineering, University of South China, Hengyang Hunan 421001, China
  • Received:2022-04-01 Revised:2022-05-26 Online:2022-07-25 Published:2022-08-12

摘要: 为了对比研究磁控溅射和多弧离子镀两种工艺制备的Cr涂层Zr-4合金微观结构和抗高温氧化性能,分别采用直流磁控溅射和多弧离子镀制备了Cr涂层Zr-4合金样品,在空气气氛中开展高温氧化试验研究。结果表明,磁控溅射制备的Cr涂层Zr-4合金样品表面光滑,Cr涂层沿着(211)晶面择优生长,而多弧离子镀制备的Cr涂层Zr-4合金样品表面存在大量的滴液,Cr涂层沿着(110)晶面择优生长。高温氧化试验结果显示,磁控溅射制备的Cr涂层Zr-4合金样品的氧化质量增加约为多弧离子镀的一半,氧化后的微观结构显示磁控溅射制备的样品还有约4 μm厚的残留Cr涂层,且O原子仅仅大量扩散到距表面约8 μm处,而多弧离子镀制备的样品表面Cr涂层全部被氧化,且O原子大量扩散到距样品表面约1 mm深处的Zr-4合金基体中。因此,磁控溅射制备的Cr涂层Zr-4合金具有更好的抗高温氧化性能。

关键词: Cr涂层Zr-4合金, 抗高温氧化性能, 微观结构, 磁控溅射, 多弧离子镀

Abstract: In order to compare the microstructure and high temperature oxidation resistance of Cr-coated Zr-4 alloy prepared by magnetron sputtering and multi-arc ion plating, Cr-coated Zr-4 alloy were prepared by DC magnetron sputtering and multi-arc ion plating, respectively. And the high temperature oxidation resistance was studied in air atmosphere. The results show that the Cr-coated Zr-4 alloy specimen prepared by magnetron sputtering has smooth surface, and the Cr coating grows preferentially along the (211) crystal plane, while there are a lot of droplets on the surface of the Cr-coated Zr-4 alloy specimen prepared by multi-arc ion plating, and the Cr coating grows preferentially along the (110) crystal plane. The results of high-temperature oxidation experiments show that the oxidation mass gain of the Cr-coated Zr-4 alloy specimen prepared by magnetron sputtering is about half of that of the multi-arc ion plating. The oxidized microstructure shows that the specimen prepared by magnetron sputtering still has a residual Cr coating with a thickness of about 4 μm, and the O atoms only diffuse to a distance of about 8 μm from the surface, while the Cr coating of the specimen prepared by multi-arc ion plating was completely oxidized, and a large number of O atoms diffused into the Zr-4 alloy matrix at a depth of about 1 mm from the surface of the specimen. Therefore, the Cr-coated Zr-4 alloy prepared by magnetron sputtering has better high temperature oxidation resistance.

Key words: Cr-coated Zr-4 alloy, high temperature oxidation resistance, microstructure, magnetron sputtering, multi-arc ion plating

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