工艺参数对电沉积钴镍合金镀层成分及耐磨性能的影响

doi:10.3969/j.issn.1000-1093.2018.04.015

摘要/Abstract

摘要： 利用电沉积技术在碳钢表面制备纳米晶钴镍合金镀层，并辅助超声波分散加机械搅拌，获得具有良好减摩性能的纳米晶、低微摩擦系数的钴镍合金镀层材料。研究了电流密度、温度、pH值等工艺参数对合金镀层成分及耐磨性的影响。利用扫描电镜、场发射扫描电镜、X射线衍射仪分析了镀层表面的显微组织、相结构及成分含量，通过UNMT1微纳米材料力学综合测试系统考察镀层的微磨损性能。结果表明，获得的合金镀层组织细密、结构均匀，工艺参数对合金层的微摩擦系数影响较大，在最佳工艺参数电流密度1.5 A/dm²、温度50 ℃、pH值为4.0时合金镀层的平均摩擦系数最小为0.18，合金具有较好的耐微摩擦磨损性能。

关键词: 钴镍合金, 电沉积, 纳米晶, 微摩擦磨损

Abstract: The nanocrystalline cobalt nickel alloy plating was prepared on carbon steel surface by using electrodeposition technique. The nanocrystalline and low friction coefficient of cobalt nickel alloy plating materials with good anti-friction properties are obtained by means of ultrasonic dispersion and mechanical stirring. The influences of current density, temperature, pH value and other process parameters on the composition and wear resistance of alloy plating are studied. The microstructure, phase structure and component content of the plating surface are analyzed by using scanning electron microscopy (SEM), field emission scanning electron microscope, and X-ray diffractometer, and UNMT1 micro/nano composite material mechanics testing system is used to investigate micro wear performance of plating. The results show that the alloy plating has fine organization and uniform structure, the process parameters have greater influences on micro friction coefficient of the alloy layer, and the minimum average friction coefficient of alloy plating is 0.18 for the current density of 1.5 A/dm², temperature of 50 ℃, and pH=4.0, and the alloy has good micro friction and wear performance. Key

Key words: cobaltnickelalloy, electrodeposition, nanocrystalline, microfrictionandwear

中图分类号:

TG178.2

颜丙辉，魏广宁，李晨霞，李雪松. 工艺参数对电沉积钴镍合金镀层成分及耐磨性能的影响[J]. 兵工学报, 2018, 39(4): 753-762.

YAN Bing-hui， WEI Guang-ning， LI Chen-xia， LI Xue-song. Influence of Process Parameters on Composition and Wear Resistance of Electrodeposited Cobalt Nickel Alloy Plating[J]. Acta Armamentarii, 2018, 39(4): 753-762.

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第39卷第4期2018 年4月兵工学报ACTA
ARMAMENTARIIVol.39No.4Apr.2018