Effect of deposition pressure on friction and wear properties of BWS2 composite coatings

Materials Research Express Pub Date : 2024-07-22 DOI:10.1088/2053-1591/ad6666

Bowei Kang, Haichao Cai, Yujun Xue, Lulu Pei, Yongjian Yu

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Abstract

This study investigated the impact of deposition pressure on the microstructure and tribological properties of B/WS2 composite coatings deposited via unbalanced magnetron sputtering. Deposition pressures of 0.6 Pa, 0.8 Pa, 1.0 Pa, 1.2 Pa, and 1.4 Pa were used during the deposition process. The microstructure and mechanical properties of the B/WS2 composite coating were characterized, and friction and wear experiments were conducted. The study found that the microhardness of the B/WS2 composite coating decreased as the deposition pressure increased. The highest hardness of the coating, reaching 8.1GPa, was observed at a deposition pressure of 0.6 Pa. This was due to the formation of Tungsten tetraborate (WB4) during the deposition process, which had a high hardness and improved the mechanical properties of the coating. The wear life of the B/WS2 composite coating was at its best, reaching 9.9×104 cycles, and the friction coefficient was at its lowest when the deposition pressure was 1.2 Pa. Selecting an appropriate deposition pressure can improve the tribological properties of B/WS2 composite coatings. Doping Boron can improve the hardness and wear resistance of the composite coatings. Abrasive wear and spalling are the two main wear forms of B/WS2 composite coatings.

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沉积压力对 BWS2 复合涂层摩擦和磨损性能的影响

本研究探讨了沉积压力对通过不平衡磁控溅射沉积的 B/WS2 复合涂层的微观结构和摩擦学特性的影响。沉积过程中使用的沉积压力分别为 0.6 Pa、0.8 Pa、1.0 Pa、1.2 Pa 和 1.4 Pa。对 B/WS2 复合涂层的微观结构和机械性能进行了表征，并进行了摩擦和磨损实验。研究发现，B/WS2 复合涂层的显微硬度随着沉积压力的增加而降低。在沉积压力为 0.6 Pa 时，涂层的硬度最高，达到 8.1GPa。这是因为在沉积过程中形成了四硼酸钨（WB4），它具有很高的硬度，改善了涂层的机械性能。当沉积压力为 1.2 Pa 时，B/WS2 复合涂层的磨损寿命最佳，达到 9.9×104 次，摩擦系数最低。掺硼能提高复合涂层的硬度和耐磨性。磨料磨损和剥落是 B/WS2 复合涂层的两种主要磨损形式。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Materials Research Express

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