电磁纯铁表面渗氮工艺分析

doi:10.13251/j.issn.0254-6051.2023.11.019

金属热处理 ›› 2023, Vol. 48 ›› Issue (11): 127-131.DOI: 10.13251/j.issn.0254-6051.2023.11.019

电磁纯铁表面渗氮工艺分析

王佃刚^1,2, 孙晓彤^1,2, 许文花^1,2, 陈传忠^1,2, 吕宇鹏^1,2

1.山东大学材料液固结构演变与加工教育部重点实验室, 山东济南 250061;
2.山东大学材料科学与工程学院, 山东济南 250061

收稿日期:2023-08-14 修回日期:2023-10-09 出版日期:2023-11-25 发布日期:2023-12-27
通讯作者: 吕宇鹏,教授,E-mail:biosdu@sdu.edu.cn
作者简介:王佃刚(1977—),男,副教授,主要研究方向为材料表面改性与强化,E-mail:wangdg@sdu.edu.cn。
基金资助:
山东省自然科学基金(ZR2022ME153);山东省重点研发计划(重大科技创新工程)(2021ZLGX01)

Surface nitriding process analysis of electromagnetic pure iron

Wang Diangang^1,2, Sun Xiaotong^1,2, Xu Wenhua^1,2, Chen Chuanzhong^1,2, Lü Yupeng^1,2

1. Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan Shandong 250061, China;
2. School of Materials Science and Engineering, Shandong University, Jinan Shandong 250061, China

Received:2023-08-14 Revised:2023-10-09 Online:2023-11-25 Published:2023-12-27

摘要/Abstract

摘要： 采用光学显微镜、扫描电镜、X射线衍射仪和显微硬度计等,对规格、尺寸相同的国内、进口电磁工件的表面及截面形貌、相组成、硬度等进行测试分析,根据Fe-N二元相图研究了两种工件的表面处理工艺。结果表明,两种样品的基体均为α纯铁,表面处理后的表面形貌和物相组成基本一致,但国内电磁工件扩散层之外只有一层由γ′-Fe相组成的厚度为8~9 μm的白亮化合物层,其显微硬度为323 HV0.05,而进口电磁工件的白亮化合物层与扩散层之间存在一层厚度为12~13 μm的过渡层,该过渡层为γ-Fe冷却后形成的屈氏体组织,显微硬度为312 HV0.05。可以推断,国内工件采用了常规低温(低于590 ℃)渗氮工艺,而进口工件由于渗层更深且存在由屈氏体组织组成的过渡层,其表面处理方法为高于590 ℃的高温离子渗氮工艺。

关键词: α-Fe, 电磁纯铁, 渗氮工艺, 屈氏体, 过渡层

Abstract: Surface and cross-sectional morphology, phase composition and hardness of domestic and imported electromagnetic workpieces with the same specifications and dimensions were tested and analyzed by using optical microscope, scanning electron microscope, X-ray diffractometer and microhardness tester, and the surface treatment processes of the two type workpieces were studied based on the Fe-N binary phase diagram. The results show that the matrix of both specimens is α pure iron, and the surface morphology and phase composition after surface treatment are basically the same. However, there is only a γ′-Fe bright compound layer above the diffusion layer of the domestic electromagnetic workpiece, with a thickness of 8-9 μm and a microhardness of 323 HV0.05. While there is a layer with a thickness of 12-13 μm between the bright compound layer and the diffusion layer of the imported electromagnetic workpieces, and the transition layer with a microhardness of 312 HV0.05 is the troostite structure formed after γ-Fe cooling. It can be inferred that domestic workpiece adopted a conventional low-temperature (below 590 ℃) nitriding process, while imported workpiece which has a deeper nitriding layer and a transition layer composed of troostite structure adopted a high-temperature ion nitriding process above 590 ℃.

Key words: α-Fe, electromagnetic pure iron, nitriding process, troostite, transition layer

中图分类号:

TG156.8

王佃刚, 孙晓彤, 许文花, 陈传忠, 吕宇鹏. 电磁纯铁表面渗氮工艺分析[J]. 金属热处理, 2023, 48(11): 127-131.

Wang Diangang, Sun Xiaotong, Xu Wenhua, Chen Chuanzhong, Lü Yupeng. Surface nitriding process analysis of electromagnetic pure iron[J]. Heat Treatment of Metals, 2023, 48(11): 127-131.

参考文献

[1]孙枫, 王琳, 张雅丽, 等. 电磁纯铁渗氮[J]. 金属热处理, 2014, 39(6): 97-99.
Sun Feng, Wang Lin, Zhang Yali, et al. Nitriding process of electromagnetic pure iron[J]. Heat Treatment of Metals, 2014, 39(6): 97-99.
[2]Gong M, Li P, Li Y, et al. Diamond turning on nitriding diffusion layer of pure iron[J]. Journal of Materials Research and Technology, 2020, 9(3): 5326-5330.
[3]Sun J, Tong W P, Zhang H, et al. Enhanced strength and plasticity of gas nitrided iron by surface mechanical attrition pretreatment[J]. Surface and Coatings Technology, 2016, 286: 279-284.
[4]刘岩, 张城兴, 李双喜. 工业纯铁的氮碳钛离子共渗工艺[J]. 金属热处理, 2021, 46(12): 252-255.
Liu Yan, Zhang Chengxing, Li Shuangxi. Process of ion nitro-carbon titanizing for industrial pure iron[J]. Heat Treatment of Metals, 2021, 46(12): 252-255.
[5]常连霞, 张建振, 夏广明, 等. 表面渗氮金相组织机理研究[J]. 汽车工艺与材料, 2020(11): 54-58.
Chang Lianxia, Zhang Jianzhen, Xia Guangming, et al. Mechanism research on surface nitriding metallographic structure[J]. Automobile Technology and Material, 2020(11): 54-58.
[6]Gupta P, Fiedler H, Rubanov S, et al. Magnetisation and magnetic anisotropy of ion beam synthesised iron nitride[J]. Journal of Magnetism and Magnetic Materials, 2021, 517: 167388.
[7]孟璇, 岳佳宏, 孔令飞, 等. 渗氮温度对42CrMo钢零件表面后氧化渗层的影响[J]. 金属热处理, 2021, 46(2): 182-184.
Meng Xuan, Yue Jiahong, Kong Lingfei, et al. Effect of nitriding temperature on post-oxidating infiltrated layer of 42CrMo steel part surface[J]. Heat Treatment of Metals, 2021, 46(2): 182-184.
[8]程兴旺, 王迎春. 热处理工艺学[M]. 1版. 北京: 北京理工大学出版社, 2021.
[9]黑祖昆, 刘志权, 许晓磊, 等. 纯铁离子渗氮扩散层中a″→γ′氮化物的转变[J]. 金属学报, 2001, 37(7): 697-702.
Hei Zukun, Liu Zhiquan, Xu Xiaolei, et al. Investigation on a″→γ′ nitride transformation in the diffusion layer of ion-nitride iron[J]. Acta Metallurgica Sinica, 2001, 37(7): 697-702.
[10]李斌, 刘东明, 李木森. 进口磁铁芯片的渗氮层组织与热处理工艺分析[J]. 热处理技术与装备, 2016, 37(2): 15-18.
Lin Bin, Liu Dongming, Li Musen. Analysis on microstructure and heat treatment process of nitriding layer of the import magnetic chips[J]. Heat Treatment Technology and Equipment, 2016, 37(2): 15-18.
[11]Dai L, Xie S, Yu M, et al. Fabrication and electromagnetic properties of carbon-based iron nitride composite[J]. Journal of Magnetism and Magnetic Materials, 2018, 466: 22-27.
[12]王博, 孙淑华. 纯铁及结构钢快速气体渗氮工艺及机理研究[J]. 材料导报, 2016, 30(6): 129.
Wang Bo, Sun Shuhua. Study on rapid gas nitriding process and nitriding mechanism for pure iron and structural steels[J]. Materials Review, 2016, 30(6): 129.

电磁纯铁表面渗氮工艺分析

Surface nitriding process analysis of electromagnetic pure iron

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