[1]徐 慧*,刘校培,李 攀,等.doi: 10.3969/j.issn.1001-3849.2025.10.004数控机床轴承钢的表面改性与耐磨耐蚀性能研究[J].电镀与精饰,2025,(10):26-32.
　Xu Hui*,Liu Xiaopei,Li Pan,et al.Research on surface modification and wear and corrosion resistance of bearing steel for computer numerical control machine tools[J].Plating & Finishing,2025,(10):26-32.
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doi: 10.3969/j.issn.1001-3849.2025.10.004数控机床轴承钢的表面改性与耐磨耐蚀性能研究()

《电镀与精饰》[ISSN:1001-3849/CN:12-1096/TG]

卷:
期数:
2025年10
页码:
26-32
栏目:
出版日期:
2025-10-31

文章信息/Info

Title:
Research on surface modification and wear and corrosion resistance of bearing steel for computer numerical control machine tools
作者:
徐 慧1*; 刘校培1; 李 攀1; 张 驰1; 郭晓光2; 卢志安2
(1. 河南机电职业学院 智能工程学院,河南 郑州 451191 ;2. 郑州大学 材料科学与工程学院,河南 郑州 450001)
Author(s):
Xu Hui1*;  Liu Xiaopei1;  Li Pan1;  Zhang Chi1;  Guo Xiaoguang 2;  Lu Zhian2
(1. College of Intelligent Engineering, Henan Mechanical Electrical Vocational College, Zhengzhou 451191, China; 2. Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China)
关键词:
数控机床轴承钢; 等离子喷涂; 涂层; 耐磨性; 耐蚀性
Keywords:
CNC machine tool bearing steel;  plasma spraying;  coating;  wear resistance;  corrosion resistance
分类号:
TG174.4
文献标志码:
A
摘要:
为了提升数控机床轴承钢的表面耐磨性和耐蚀性，采用等离子喷涂的方法在轴承钢表面制备了4种不同成分配比的等离子喷涂涂层，对比分析了等离子喷涂涂层的物相组成、显微形貌、硬度、耐磨性和耐蚀性。结果表明：等离子喷涂涂层主要由Al2O3、Ni、Cr23C6、Cr7C3和Ni3Al相组成；涂层10Ni90Al、涂层20Ni80Al的平均涂层厚度较小，表面未熔颗粒和微孔数量较多，而涂层30Ni70Al和涂层40Ni60Al的平均涂层厚度最大、致密性较高。随着Ni60自熔性合金粉末含量增加，涂层与钢基体的结合强度不断增大，等离子喷涂涂层的硬度都高于轴承钢基体，且离表面相同距离下涂层30Ni70Al的硬度最高。随着Ni60自熔性合金粉末含量增加，涂层的摩擦系数和磨损率先减小后增大，腐蚀电位先正移后负移、腐蚀电流密度先减小后增大、阻抗弧半径先增大后减小，涂层30Ni70Al具有最小的平均摩擦系数和磨损率、腐蚀电位最正、腐蚀电流密度最小、阻抗弧半径最大，具有最佳的耐磨性和耐蚀性。
Abstract:
In order to improve the surface wear resistance and corrosion resistance of computer numerical control (CNC) machine tool bearing steel, four different composition ratios of plasma spray coatings were prepared on the surface of the steel substrate by plasma spraying. The phase composition, microstructure, hardness, wear resistance, and corrosion resistance of the plasma spray coatings were compared and analyzed. The results indicate that the phases of plasma sprayed coatings are mainly composed of Al2O3, Ni, Cr23C6, Cr7C3 and Ni 3Al phases; The average coating thickness of coatings 10Ni90Al and 20Ni80Al is relatively small, with a large number of unmelted particles and micropores on the surface, while coatings 30Ni70Al and 40Ni60Al have the highest average coating thickness and higher density. As the content of Ni60 self-soluble alloy powder increases, the bonding strength between the coating and the steel substrate continues to increase. The hardness of the plasma sprayed coating is higher than that of the bearing steel substrate, and the hardness of the 30Ni70Al coating is the highest at the same distance from the surface. As the content of Ni60 self-soluble alloy powder increases, the friction coefficient and wear rate of the coating first decrease and then increase, the 30Ni70Al coating has the smallest average friction coefficient and wear rate, which shows the best wear resistance; the corrosion potential first shifts positively and then negatively, the corrosion current density first decreases and then increases, and the impedance arc radius first increases and then decreases, the 30Ni70Al coating has the most positive corrosion potential, the smallest corrosion current density and the largest impedance arc radius, which shows the best corrosion resistance

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更新日期/Last Update: 2025-10-15