Tribology Letters ( IF 2.9 ) Pub Date : 2021-07-30 , DOI: 10.1007/s11249-021-01486-y B. Pilotti 1, 2 , G. Prieto 1, 3 , W. R. Tuckart 1, 3 , A. Juan 2 , R. Faccio 4 , E. Broitman 5 , M. Dennehy 6
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Abstract
Bi2S3 is a promising solid lubricant for demanding applications, such as oil extraction, heavy mining, and aerospace components. However, its tribological behavior has not been studied in depth. Burnished Bi2S3 soft coatings were evaluated utilizing reciprocating sliding tests under different levels of relative humidity level, normal load, and sliding speed and the results were benchmarked against MoS2 coatings. In addition, ab initio calculations using density functional theory modeling were employed for studying the interaction between the sulfides and the steel substrates and the effect of water intercalation at an atomic level. It was found that Bi2S3 coatings present excellent environmental adaptability and substrate protection over a wide range of testing conditions, thanks to their characteristic crystal structure.
Graphic Abstract
中文翻译：
Bi2S3 和 MoS2 软涂层：它们在不同湿度水平、正常载荷和滑动速度下摩擦行为的比较研究
摘要
Bi 2 S 3是一种很有前途的固体润滑剂，适用于要求苛刻的应用，例如石油开采、重采矿和航空航天部件。然而，其摩擦学行为尚未深入研究。抛光的 Bi 2 S 3软涂层在不同的相对湿度水平、正常载荷和滑动速度下使用往复滑动试验进行评估，结果以 MoS 2涂层为基准。此外，使用密度泛函理论模型的从头算计算被用于研究硫化物和钢基材之间的相互作用以及原子水平上水嵌入的影响。发现 Bi 2 S 3 由于其特有的晶体结构，涂层在各种测试条件下都具有出色的环境适应性和基材保护。
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