Effect of Trace Boron Addition on the Microstructure and Properties of Plasma Nitriding Layer

被引：0
|
作者：
Ma Heng [1 ,2 ]
Luo Qi [1 ,3 ]
Wei Kunxia [1 ,2 ]
Zhou Zhenghua [1 ,3 ]
Hu Jing [1 ,2 ,4 ]
机构：
[1] Changzhou Univ, Jiangsu Key Lab Mat Surface Sci & Technol, Changzhou 213164, Peoples R China
[2] Changzhou Univ, Huaide Coll, Changzhou 213164, Peoples R China
[3] Changzhou Univ, Natl Expt Demonstrat Ctr Mat Sci & Engn, Changzhou 213164, Peoples R China
[4] Changzhou Univ, Jiangsu Collaborat Innovat Ctr Photovolat Sci & E, Changzhou 213164, Peoples R China
来源：
CHINA SURFACE ENGINEERING | 2022年 / 35卷 / 02期
基金：
中国国家自然科学基金;
关键词：
42CrMo steel; plasma boron-nitriding; boron; nitriding layer; wear resistance; toughness; PRETREATMENT;
D O I：
10.11933/j.issn.1007-9289.20210421001
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In order to improve the characteristics of plasma nitriding layer, a novel plasma boron-nitriding is carried out on 42CrMo steel. The cross-sectional microstructure, phase compositions, cross-sectional hardness, brinell hardness tester and wear resistance of the nitriding layer are tested and analyzed by optical microscope, XRD, microhardness tester, nitriding layer toughness and friction and wear tester. The results show that plasma boron-nitriding can significantly increase the thickness of compound layer from 18.78 mu m to 29.44 mu m, and saw-tooth vertical wedge appears in the compound layer, which enhances the bonding force between the compound layer and the matrix. In addition, hard phases FeB and Fe2B are formed in the nitrided layer of the sample after plasma boron-nitriding, and the surface hardness of the sample is enhance from 750 HV0.05 to 1002 HV0.05. At the same time, the hardness in the same layer depth is significantly improved, and the thickness of the effective diffusion layer is increased from 265 mu m to 355 mu m, that is, the nitriding efficiency is increased by nearly 35%. The wear resistance and toughness of the samples treated by plasma boron-nitriding is obviously higher than that of conventional plasma nitriding.
引用
收藏
页码：170 / +
页数：7
相关论文
共 15 条
  • [1] BHARDRAIAH D, 2021, MATER TODAY-PROC, V30, P118
  • [2] Role of surface mechanical attrition treatment and chemical etching on plasma nitriding behavior of AISI 304L steel
    Gatey, Atul M.
    Hosmani, Santosh S.
    Figueroa, Carlos A.
    Arya, Shashi B.
    Singh, Rajkumar P.
    [J]. SURFACE & COATINGS TECHNOLOGY, 2016, 304 : 413 - 424
  • [3] On the kinetics of nitride and diffusion layer growth in niobium plasma nitriding
    Kertscher, R.
    Brunatto, S. F.
    [J]. SURFACE & COATINGS TECHNOLOGY, 2020, 401 (401):
  • [4] [李景才 Li Jingcai], 2014, [材料热处理学报, Transactions of Materials and Heat Treatment], V35, P182
  • [5] A rapid DC plasma nitriding technology catalyzed by pre-oxidation for AISI4140 steel
    Li, Jingcai
    Yang, Xingmei
    Wang, Shukai
    Wei, Kunxia
    Hu, Jing
    [J]. MATERIALS LETTERS, 2014, 116 : 199 - 202
  • [6] Liang WP, 2006, RARE METAL MAT ENG, V35, P1826
  • [7] A novel plasma oxynitriding by using plain air for AISI 1045 steel
    Liu, Han
    Li, Jingcai
    Chai, Yating
    Wei, Wei
    Hu, Jing
    [J]. VACUUM, 2015, 121 : 18 - 21
  • [8] Enhanced plasma nitriding efficiency and properties by severe plastic deformation pretreatment for 316L austenitic stainless steel
    Lu, Yangyang
    Li, Dong
    Ma, Heng
    Liu, Xiliang
    Wu, Meihong
    Hu, Jing
    [J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, 2021, 15 : 1742 - 1746
  • [9] Performance enhancement by novel plasma boron-nitriding for 42CrMo4 steel
    Ma, Heng
    Wei, Kunxia
    Zhao, Xiaobing
    Liu, Xiliang
    Hu, Jing
    [J]. MATERIALS LETTERS, 2021, 304
  • [10] [毛长军 Mao Changjun], 2020, [中国表面工程, China Surface Engineering], V33, P34
12