TA2钛合金真空感应碳氮共渗组织及耐磨损和耐腐蚀性能

doi:10.13251/j.issn.0254-6051.2022.02.018

金属热处理 ›› 2022, Vol. 47 ›› Issue (2): 99-104.DOI: 10.13251/j.issn.0254-6051.2022.02.018

TA2钛合金真空感应碳氮共渗组织及耐磨损和耐腐蚀性能

向庆, 姜雪婷, 伍良银, 冉潇潇, 刘静, 杨峰

贵州师范大学材料与建筑工程学院, 贵州贵阳 550001

收稿日期:2021-10-10 修回日期:2021-12-11 出版日期:2022-02-25 发布日期:2022-04-01
通讯作者: 杨峰,副教授,E-mail:100542337@gznu.edu.cn
作者简介:向庆(1985—),女,讲师,博士,主要研究方向为金属材料,E-mail:373519326@qq.com。
基金资助:
黔科合平台人才([2020]1Z041);国家自然科学基金(51574096)

Microstructure, wear and corrosion resistant properties of TA2 titanium alloy after vacuum induction carbonitriding

Xiang Qing, Jiang Xueting, Wu Liangyin, Ran Xiaoxiao, Liu Jing, Yang Feng

School of Materials and Architectural Engineering, Guizhou Normal University, Guiyang Guizhou 550001, China

Received:2021-10-10 Revised:2021-12-11 Online:2022-02-25 Published:2022-04-01

摘要/Abstract

摘要： 通过真空感应碳氮共渗技术对纯钛合金(TA2)在900 ℃下进行表面改性处理,并研究了经过碳氮共渗处理后TA2钛合金表面强化层的组织结构、耐磨损及腐蚀性能。结果表明:经900 ℃碳氮共渗处理后,TA2钛合金表面生成了一层以C_0.3N_0.7Ti为主的复合层;表层的显微硬度高达2236 HV0.25,相较于未经碳氮共渗处理的试样提高了约4.4倍;碳氮共渗后试样表现出典型的氧化轻微磨损特征。在模拟体液(SBF)溶液中,碳氮共渗TA2钛合金试样的腐蚀电位向正移动,自腐蚀电流密度明显降低,耐蚀性提高。

关键词: TA2钛合金, 真空感应碳氮共渗, 显微组织, 干摩擦, 电化学腐蚀

Abstract: Pure titanium alloy (TA2) was modified by vacuum induction carbonitriding at 900 ℃, and the microstructure, wear and corrosion resistance properties of the surface strengthening layer of TA2 titanium alloy after carbonitriding were studied. The results show that a composite layer of C_0.3N_0.7Ti is formed on the surface of TA2 titanium alloy after carbonitriding at 900 ℃, the microhardness of the surface layer is as high as 2236 HV0.25, which is about 4.4 times higher than that of the specimen without carbonitriding. After carbonitriding, the specimen shows typical mild oxidation wear characteristics. In addition, in simulated body fluid (SBF) solution, corrosion potential of the TA2 titanium alloy after carbonitriding moves forward, the self-corrosion current density decreases obviously and the corrosion resistance improves.

Key words: TA2 titanium alloy, vacuum induction carbonitriding, microstructure, dry friction, electrochemical corrosion

中图分类号:

TG178

向庆, 姜雪婷, 伍良银, 冉潇潇, 刘静, 杨峰. TA2钛合金真空感应碳氮共渗组织及耐磨损和耐腐蚀性能[J]. 金属热处理, 2022, 47(2): 99-104.

Xiang Qing, Jiang Xueting, Wu Liangyin, Ran Xiaoxiao, Liu Jing, Yang Feng. Microstructure, wear and corrosion resistant properties of TA2 titanium alloy after vacuum induction carbonitriding[J]. Heat Treatment of Metals, 2022, 47(2): 99-104.

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TA2钛合金真空感应碳氮共渗组织及耐磨损和耐腐蚀性能

Microstructure, wear and corrosion resistant properties of TA2 titanium alloy after vacuum induction carbonitriding

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