Research on Friction Behavior of Environmentally Friendly Plating for Gun Barrels

被引：0
|
作者：
Xu J. [1 ]
Hu C. [1 ]
Lu H. [1 ]
Deng Y. [1 ]
Xue J. [2 ]
Wei X. [1 ]
Dong H. [1 ]
机构：
[1] School of Materials Science and Engineering, Shanghai University, Shanghai
[2] No. 208 Research Institute of China Ordnance Industries, Beijing
来源：
Binggong Xuebao/Acta Armamentarii | 2024年 / 45卷 / 02期
关键词：
friction coefficient; gun barrel; high temperature friction; plating layer; wear;
D O I：
10.12382/bgxb.2022.0695
中图分类号：
学科分类号：
摘要：
The hexavalent chromium plating used on the bore surface of conventional barrel has good high-temperature wear resistance, but it brings a serious environmental pollution. In order to develop an environmentally friendly plating, the wear characteristics of four plating layers, i. e., hexavalent chromium, trivalent chromium, cobalt-nickel and nickel-tungsten, are compared and analyzed by characterizing the worn specimens at room temperature and high temperature (400 益) using ultra-deep field 3D microscope and scanning electron microscope. The results show that the hardnesses of trivalent chromium, nickel-tungsten, hexavalent chromium and cobalt-nickel plating layers decrease in descending order after qualitative tempering at 500 益, and the trivalent chromium plating layer is more brittle and the nickel-tungsten and cobalt-nickel plating layers are more ductile compared with the hexavalent chromium plating layer. After friction with H62 brass at room temperature, the hexavalent chromium and trivalent chromium plating layers show light friction, while the cobalt-nickel and nickel-tungsten plating players show obvious adhesion characteristics, and their friction coefficients are higher than those of the two chromium layers. After friction with 08Al steel at 400 益, the hexavalent chromium plating layer shows adhesive wear characteristics and high friction, the friction coefficient of trivalent chromium plating layer is relatively high, while the nickel-tungsten plating layer shows abrasive wear characteristics, its friction coefficient is close to that of hexavalent chromium plating layer, and its friction was relatively light. © 2024 China Ordnance Industry Corporation. All rights reserved.
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页码：651 / 661
页数：10
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