工业纯钛TA2交流电场增强粉末法铝碳氮共渗

doi:10.13251/j.issn.0254-6051.2024.10.044

金属热处理 ›› 2024, Vol. 49 ›› Issue (10): 272-277.DOI: 10.13251/j.issn.0254-6051.2024.10.044

工业纯钛TA2交流电场增强粉末法铝碳氮共渗

韩爱玉¹, 谢飞^1,2

1.常州大学材料科学与工程学院, 江苏常州 213164;
2.常州大学江苏省材料表面技术重点实验室, 江苏常州 213164

收稿日期:2024-05-08 修回日期:2024-08-15 出版日期:2024-11-28 发布日期:2024-11-28
通讯作者: 谢飞,教授,博士,E-mail:xiefei@cczu.edu.cn
作者简介:韩爱玉(1998—),女,硕士研究生,主要研究方向为材料表面工程,E-mail:2559726235@qq.com。
基金资助:
国家自然科学基金(51171032)

Alternating current field enhanced pack aluminum-carbonitriding of commercial pure titanium TA2

Han Aiyu¹, Xie Fei^1,2

1. School of Materials Science and Engineering, Changzhou University, Changzhou Jiangsu 213164, China;
2. Key laboratory of Materials Surface Engineering of Jiangsu Province, Changzhou University, Changzhou Jiangsu 213164, China

Received:2024-05-08 Revised:2024-08-15 Online:2024-11-28 Published:2024-11-28

摘要/Abstract

摘要： 对工业纯钛TA2在750 ℃进行交流电场增强粉末法铝碳氮共渗。采用金相显微观察、X射线衍射分析、显微硬度测试等分析试样渗层组织、相结构、渗层厚度以及显微硬度沿渗层深度方向的分布。结果表明,工业纯钛TA2经电流为2 A的交流电场增强渗扩所得共渗层由TiN、Ti₂N以及少量AlTi₃构成,随电场电流逐步由2 A增大至6 A,渗层开始出现Ti₃AlN、C_0.3N_0.7Ti相,而TiN、Ti₂N消失,AlTi₃始终存在;TA2工业纯钛经同样渗剂、同样温度和同样时间常规渗扩后,渗层未检测到含铝相;交流电场对工业纯钛TA2粉末法铝碳氮共渗有显著促渗作用,促渗作用随电场电流的增大而增强;施加电流为6 A的电场,能够获得厚度约40 μm的渗层;交流电场还提高渗层硬度峰值及沿层深分布的整体硬度。

关键词: 工业纯钛TA2, 铝碳氮共渗, 交流电场

Abstract: Alternating current field(ACF) enhanced pack aluminum-carbonitriding was carried out at 750 ℃ for commercial pure titanium TA2. The microstructure, phase structure, thickness and microhardness distribution along the case depth of the treated specimens were analyzed by means of optical microscopy, X-ray diffraction and microhardness test. The results show that the case obtained with the help of the ACF with a current of 2 A consists of TiN, Ti₂N and a small amount of AlTi₃. As the ACF current gradually increases from 2 A to 6 A, Ti₃AlN and C_0.3N_0.7Ti are found in the surface layer, and the amount of TiN and Ti₂N disappear, while AlTi₃ always exists. No aluminum-containing phase is detected in the surface layer of TA2 treated by conventional pack aluminum-carbonitriding with the same agent, temperature and time used for the ACF enhanced treating. The ACF has a significant promoting effect on the pack aluminum-carbonitriding. The promoting effect increases with the increase of the ACF current. Applying an electric field with a current of 6 A can produces a case with a thickness about 40 μm. The ACF also increases the case's peak hardness and overall hardness along the case's depth.

Key words: commercial pure titanium TA2, pack aluminum-carbonitriding, alternating current field

中图分类号:

韩爱玉, 谢飞. 工业纯钛TA2交流电场增强粉末法铝碳氮共渗[J]. 金属热处理, 2024, 49(10): 272-277.

Han Aiyu, Xie Fei. Alternating current field enhanced pack aluminum-carbonitriding of commercial pure titanium TA2[J]. Heat Treatment of Metals, 2024, 49(10): 272-277.

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工业纯钛TA2交流电场增强粉末法铝碳氮共渗

Alternating current field enhanced pack aluminum-carbonitriding of commercial pure titanium TA2

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