Comparative Study on Plasma Oxynitriding and Plasma Nitriding for 42CrMo Steel

MIAO Xiaoji; WU Jiqiang; MEI Wenchen; SUN Fei; XU Lei; ZHANG Yulong; HU Jing

doi:10.16080/j.issn1671–833x.2019.21.064

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Comparative Study on Plasma Oxynitriding and Plasma Nitriding for 42CrMo Steel

更新时间：2025-10-30

- Comparative Study on Plasma Oxynitriding and Plasma Nitriding for 42CrMo Steel
- Aeronautical Manufacturing Technology Vol. 62, Issue 21, Pages: 64-68(2019)
- 作者机构：
  
  1. 常州工业职业技术学院机械工程系,常州,213164
  2. 常州大学材料科学与工程国家级实验教学示范中心,常州,213164
  3. 中石化石油机械股份有限公司,武汉,430223
- 作者简介：
- 基金信息：
- DOI：10.16080/j.issn1671–833x.2019.21.064
  CLC：
- Published：2019
- 稿件说明：
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缪小吉，武计强，梅文臣，孙斐，徐磊，张玉龙，胡静. 42CrMo钢离子氮氧共渗与离子渗氮对比研究[J]. 航空制造技术, 2019, 62(21): 64-68.

MIAO Xiaoji, WU Jiqiang, MEI Wenchen, SUN Fei, XU Lei, ZHANG Yulong, HU Jing. Comparative Study on Plasma Oxynitriding and Plasma Nitriding for 42CrMo Steel. Aeronautical Manufacturing Technology, 2019, 62(21): 64-68.
缪小吉，武计强，梅文臣，孙斐，徐磊，张玉龙，胡静. 42CrMo钢离子氮氧共渗与离子渗氮对比研究[J]. 航空制造技术, 2019, 62(21): 64-68. DOI： 10.16080/j.issn1671–833x.2019.21.064.

MIAO Xiaoji, WU Jiqiang, MEI Wenchen, SUN Fei, XU Lei, ZHANG Yulong, HU Jing. Comparative Study on Plasma Oxynitriding and Plasma Nitriding for 42CrMo Steel. Aeronautical Manufacturing Technology, 2019, 62(21): 64-68. DOI： 10.16080/j.issn1671–833x.2019.21.064.

摘要

以常用齿轮钢42CrMo为研究材料，采用不同空气流量对其进行离子氮氧共渗，并与传统离子渗氮进行对比。利用光学显微镜、XRD和电化学工作站对渗层的显微组织、物相和耐蚀性进行了测试和分析。研究结果表明，在550℃+4h相同温度和时间条件下，离子氮氧共渗化合物层比传统离子渗氮渗层厚度增加50% 以上，氮化疏松层级别提高到1~2级；同时，离子氮氧共渗后渗层最表层形成了一薄层Fe

，使耐蚀性得到显著提高，0.3L/min为最佳空气流量。该研究可为改进42CrMo表面改性工艺方案提供参考。

Abstract

In order to enhance the nitriding efficiency

42CrMo steel was selected as the testing material. Plasma oxynitriding using different air flow in the same pulsed plasma nitriding system for 42CrMo steel was investigated innovatively

and compared with conventional plasma nitriding processing. The cross-sectional microstructures

phases

corrosion resistance were determined by optical microscopy

X-ray diffraction

microhardness tester and electrochemical workstations. The results show that plasma oxynitriding owns much higher efficiency compared with plasma nitriding

thus makes thicker compound layer under the same other conditions. Meanwhile

higher porosity of nitrided layer is obtained. Furthermore

corrosion resistance can be significantly improved due to chemically stable formation and compact Fe

oxi

de in the compound layer during plasma oxynitriding process

and air flow of 0.3L/min offers the optimum performance for 42CrMo steel due to highest ratio of Fe

to Fe

. This research can provide a reference for improving the surface modification process of 42CrMo.

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