Wear characterization of electrodeposited Ni–WC composite coatings
Wear characterization of electrodeposited Ni–WC composite coatings
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DOI：
10.1016/j.triboint.2004.04.003
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发表时间：
2004-09
影响因子：
6.2
通讯作者：
M. Surender;B. Basu;R. Balasubramaniam
中科院分区：
文献类型：
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作者：
M. Surender;B. Basu;R. Balasubramaniam
本论文报告了电沉积在钢基材上的 Ni-WC 复合涂层的摩擦学性能。使用 50°C 的瓦特浴将平均尺寸为 5 μm 的商用 WC 颗粒与 Ni 共沉积在低碳钢基材上。研究了电镀变量对沉积行为的影响。随着电流密度从 0.1 A/cm2 增加到 0.3 A/cm2，沉积层中 WC 的量减少，电镀效率增加。采用小振幅往复摩擦磨损试验机研究了涂层的摩擦学性能。 Ni中添加WC提高了电沉积涂层的显微硬度。一个重要的结果是，与纯镍 (COF 0.62) 和低碳钢 (COF 0.54) 相比，电沉积涂层中嵌入 WC 颗粒的存在导致摩擦系数 (COF) 低得多，为 0.34。
The present contribution reports the tribological properties of Ni-WC composite coatings, electrodeposited on steel substrate. Commercial WC particles with an average size of 5 μm were codeposited with Ni on a mild steel substrate using a Watts bath at 50 C. The effect of plating variables on deposition behavior was studied. The amount of WC in the deposited layer decreased and plating efficiency increased with an increase in current density from 0.1 to 0.3 A/cm2. The tribological properties of the coatings were studied using a small amplitude reciprocating friction wear tester. The addition of WC in Ni increases the microhardness of the electrodeposited coatings. An important result is that the presence of embedded WC particles in the electrodeposited coatings results in a much lower coefficient of friction (COF) of 0.34, when compared with pure Ni (COF 0.62) and mild steel (COF 0.54).