Molybdenum disulphide (MoS₂) is widely used in tribological applications because of its solid lubricating properties. However, its performance needs to be further improved. In this work, an attempt has been made to improve the tribological performance of MoS₂ coating by incorporating TiO₂ nanoparticles as a reinforcement material into the MoS₂ base matrix. The effects of crystallite size and wt.% addition of TiO₂ onto the tribological properties of composite MoS₂–TiO₂ have been studied. Prior to application of the coating onto the substrate surface, it was pre-treated by phosphating which leads to improvement in the porosity and helps to enhance the bond strength between the coating and steel substrate. A tribological study of composite pure MoS₂ coating and MoS₂–TiO₂ coating was carried out using the pin-on-disc test rig at different operating conditions (contact pressure, speed and temperature). It was observed that composite MoS₂–TiO₂ coating exhibits excellent tribological properties as compared to pure MoS₂ coating. In addition, crystallite size of TiO₂ and its different weight% significantly affect the tribological properties of the composite coating. Among all samples of composite MoS₂–TiO₂ coating, the sample C (27.69 nm crystallite size) with 15% wt. of TiO₂ depicts the lowest friction coefficient and wear rate. The influence of temperature and coating thickness on the tribological properties of composite coating has been studied. The frictional coefficient has been reduced, and the wear rate increased with an increase in temperature of the coated pin surface. The similar kind of trend has been observed with respect to the coating thickness.

二硫化钼（MoS ₂）由于其固体润滑性能而广泛用于摩擦学应用。但是，其性能需要进一步提高。在这项工作中，已经尝试通过将作为增强材料的TiO ₂纳米颗粒掺入MoS ₂基础基质中来改善MoS ₂涂层的摩擦学性能。晶粒尺寸和TiO _2的重量百分比对复合MoS ₂ -TiO ₂的摩擦学性能的影响已经研究过了。在将涂层施涂到基材表面上之前，先进行磷化处理，以改善孔隙率并有助于提高涂层与钢质基材之间的粘结强度。在不同的操作条件（接触压力，速度和温度）下，使用针式圆盘试验台对纯MoS ₂和MoS ₂ -TiO ₂复合涂层进行了摩擦学研究。观察到，与纯MoS ₂涂层相比，复合MoS ₂ -TiO ₂涂层具有优异的摩擦学性能。另外，TiO _2的微晶尺寸并且其不同的重量％显着影响复合涂层的摩擦学性能。在所有复合MoS ₂ -TiO ₂涂层样品中，样品C（27.69 nm的微晶尺寸）的重量百分比为15％。TiO ₂的摩擦系数和磨损率最低。研究了温度和涂层厚度对复合涂层摩擦学性能的影响。随着涂层销表面温度的升高，摩擦系数减小，磨损率增加。关于涂层厚度已经观察到类似的趋势。