Microstructure evolution and enhanced vacuum tribological performance of Ni-doped WS2 composite coating
Microstructure evolution and enhanced vacuum tribological performance of Ni-doped WS2 composite coating
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Ni掺杂WS2复合涂层的微观结构演变和增强的真空摩擦学性能
DOI：
10.1016/j.surfcoat.2017.06.036
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发表时间：
2017-09
影响因子：
5.4
通讯作者：
Dae-Eun Kim
中科院分区：
文献类型：
--
作者：
Shusheng Xu;LijunWeng;Yu-Zhen Liu;Kyeong-Hee Kang;Chang-Lae Kim;Dae-Eun Kim
采用射频溅射法在硅片和AISI 440 C不锈钢基体上共沉积了不同Ni含量的Ni掺杂WS 2复合涂层。研究了WS 2-Ni复合镀层的微观结构特征及其真空摩擦学性能。在WS 2-Ni复合涂层中引入Ni掺杂剂期间，由于生长涂层中的硫原子的优先再溅射减少，涂层中的S/W（S/W）比增加。当Ni含量小于7.7at.%时，WS 2-Ni复合镀层的显微组织由细小的柱状组织转变为细小的柱状组织随着Ni含量的进一步增加，转变为无特征结构。Ni的掺杂抑制了WS 2片晶的生长，并伴随着复合涂层结构的纳米化和非晶化。WS_2-Ni复合涂层具有细小的柱状结构，硬度较低，但易形成润滑转移层。与致密无特征结构的涂层相比，它还表现出低脆性和在真空条件下延长的磨损寿命。复合涂层之间的摩擦学性能的变化是由于与其不同的微观结构相关的不同的磨损机制。
Ni-doped WS2composite coatings with various Ni contents were co-deposited using a radio frequency sputtering system on silicon wafer and AISI 440C stainless steel substrates. The microstructural characteristics of the WS2-Ni composite coatings and their tribological properties in vacuum were assessed. During introduction of Ni dopant in the WS2-Ni composite coating the sulfur/tungsten (S/W) ratio in the coating increased due to reduced preferential resputtering of sulfur atoms in the growing coating. The microstructure of the WS2-Ni composite coating varied from a fine columnar structure for Ni content equal to or less than 7.7 at.% to a featureless structure as the Ni content increased further. The Ni dopant inhibited the growth of the coarse columnar WS2platelets which was accompanied by nanocrystallization and amorphization of the composite coating structure. WS2-Ni composite coatings with fine columnar structure exhibited relatively low hardness but showed a high tendency to form a lubricating transfer layer. It also demonstrated low brittleness and prolonged wear life in vacuum condition compared to coatings with dense featureless structure. The variation in tribological performance between the composite coatings resulted from the different wear mechanisms associated with their distinct microstructures.
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影响因子：
6.2
作者：
F. Gustavsson;S. Jacobson
通讯作者：
F. Gustavsson;S. Jacobson
影响因子：
5
作者：
D. Teer
通讯作者：
D. Teer
影响因子：
6.7
作者：
Shusheng Xu;Xiaoming Gao;M. Hu;Jiayi Sun;D. Jiang;Feng Zhou;Wei-min Liu;L. Weng
通讯作者：
Shusheng Xu;Xiaoming Gao;M. Hu;Jiayi Sun;D. Jiang;Feng Zhou;Wei-min Liu;L. Weng
影响因子：
4
作者：
Yongjing Shi;F. Pan;Siyuan Long;Wei-qing Wang;Guangjun Zhu
通讯作者：
Yongjing Shi;F. Pan;Siyuan Long;Wei-qing Wang;Guangjun Zhu
影响因子：
4.4
作者：
G. Bozzolo;H. O. Mosca;M. D. Grosso
通讯作者：
G. Bozzolo;H. O. Mosca;M. D. Grosso