In this investigation, a self-assembly method was used to fabricate black phosphorus (BP)/MoS₂ composites as water-based lubrication additives. The tribological behaviours of the lubrication additives for GCr15 steel ball/TC4 titanium alloy disk contact under different mass ratios, loads and rotational speeds were also investigated. The experimental results showed that 0.01 wt.% BP and 0.04 wt.% MoS₂ as water-based lubrication additive have the best the synergistic lubrication effect. Compared with pure water, coefficient of friction (COF) and wear rate of the lubrication additive at the test conditions of 8 N and 150 r/min were reduced by 32.6% and 68.8%, respectively. As the loads increased, the COFs and wear rates of all the lubricants including pure water, BP as water-based lubrication additive (BP-WL), MoS₂ as water-based lubrication additive (MS-WL) and BP/MoS₂ composites as water-based lubrication additive (BM-WL) were all reduced. As the rational speeds increased from 100 to 250 r/min, all the lubricants were firstly decreased and then increased. Based on tribological tests and wear surface analysis, the lubrication mechanism of BM-WL is proposed. The interlaminar shear and the adsorption of BP/MoS₂ composites on the wear surface of the friction pairs are the key to reducing COFs sand wear rates. In addition, the tribo-chemical reaction films consists of FeO/Fe₂O₃, Al₂O₃ and TiO₂ were formed during the friction process, which can effectively protect the surface of the titanium alloy/steel contact from wear.

中文翻译：

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黑磷/二硫化钼复合材料作为水性润滑添加剂的摩擦学行为

在这项研究中，使用自组装方法制造黑磷 (BP)/MoS ₂复合材料作为水基润滑添加剂。还研究了不同质量比、载荷和转速下GCr15钢球/TC4钛合金圆盘接触润滑添加剂的摩擦学行为。实验结果表明，0.01 wt.% BP 和 0.04 wt.% MoS ₂作为水性润滑添加剂具有最佳的协同润滑效果。与纯水相比，润滑添加剂在8 N和150 r/min试验条件下的摩擦系数（COF）和磨损率分别降低了32.6%和68.8%。随着负载的增加，包括纯水、BP 作为水基润滑添加剂 (BP-WL)、MoS ₂作为水基润滑添加剂 (MS-WL) 和 BP/MoS ₂在内的所有润滑剂的 ​​COF 和磨损率复合材料作为水基润滑添加剂 (BM-WL) 都减少了。随着合理转速从 100 r/min 增加到 250 r/min，所有润滑剂先减少后增加。基于摩擦学试验和磨损面分析，提出了BM-WL的润滑机理。BP/MoS ₂复合材料在摩擦副磨损表面的层间剪切和吸附是降低COFs砂磨损率的关键。此外，在摩擦过程中形成由FeO/Fe ₂ O ₃、Al ₂ O ₃和TiO ₂组成的摩擦化学反应膜，可有效保护钛合金/钢接触表面免受磨损。