Co-Cr-Mo alloys are widely applied in the field of artificial hip joints. However, the service life of artificial hip joints is limited to 10–15 years due to its poor wear resistance. Thus, more and more patients have to replace the damaged artificial hip joints by revision surgery, which leaves the patient in pain. The surface micro-textures manufactured on the surfaces of artificial joints is an established method to improve its tribological behaviors such as coefficient of friction (COF), wear and scratches etc. However, most of researches about textured Co-Cr-Mo were limited to simple dimple shaped micro-textures. In this study, innovative patterned surface micro-textures, i.e., arrays of groove, hexagon and concentric circles were manufactured on Co-Cr-Mo alloy by laser surface texturing (LST). Results showed that the hardness and wettability of Co-Cr-Mo alloy were improved. The rotating friction tests were carried out under bovine serum albumin (BSA) lubricants by a ball-on-disc type friction machine. Frictional experiments showed that the tribological properties of concentric circles micro-textures were best. And, under the 10 N loading conditions, the COF and weight loss of PEEK ball of concentric circles sliding against concentric circles micro-textured sample with 20% density (C-20) were reduced by 49.22% and 52.3% compared to untextured sample, respectively. Meanwhile, the relationship between surface wettability and COF of the textured Co-Cr-Mo alloy was discussed and the mechanism for the effects of the surface micro-textures was revealed.

Co-Cr-Mo合金广泛应用于人工髋关节领域。但是，由于人工髋关节的耐磨性差，其使用寿命被限制在10-15年。因此，越来越多的患者不得不通过翻修手术来替换受损的人工髋关节，这使患者感到痛苦。在人造关节的表面上制造表面微纹理是改善其摩擦学性能（例如摩擦系数（COF），磨损和划痕等）的既定方法。但是，关于纹理化Co-Cr-Mo的大多数研究仅限于简单的酒窝状微纹理。在这项研究中，通过激光表面纹理化（LST）在Co-Cr-Mo合金上制造了创新的图案化表面微观纹理，即沟槽，六角形和同心圆的阵列。结果表明，Co-Cr-Mo合金的硬度和润湿性得到了改善。旋转摩擦试验是在圆盘式摩擦机上在牛血清白蛋白（BSA）润滑剂下进行的。摩擦实验表明，同心圆微织构的摩擦学性能最佳。并且，在10 N的负载条件下，同心圆在20％密度（C-20）的同心圆微织造样品上滑动的同心圆的PEF球的COF和重量损失与未织构的样品相比分别降低了49.22％和52.3％，分别。同时，讨论了织构化的Co-Cr-Mo合金的表面润湿性与COF之间的关系，并揭示了影响表面微观结构的机理。旋转摩擦试验是在圆盘式摩擦机上在牛血清白蛋白（BSA）润滑剂下进行的。摩擦实验表明，同心圆微织构的摩擦学性能最佳。并且，在10 N的负载条件下，同心圆在20％密度（C-20）的同心圆微织造样品上滑动的同心圆的PEF球的COF和重量损失与未织构的样品相比分别降低了49.22％和52.3％，分别。同时，讨论了织构化的Co-Cr-Mo合金的表面润湿性与COF之间的关系，并揭示了影响表面微观结构的机理。旋转摩擦试验是在圆盘式摩擦机上在牛血清白蛋白（BSA）润滑剂下进行的。摩擦实验表明，同心圆微织构的摩擦学性能最佳。并且，在10 N的负载条件下，同心圆在20％密度（C-20）的同心圆微织造样品上滑动的同心圆的PEF球的COF和重量损失与未织构的样品相比分别降低了49.22％和52.3％，分别。同时，讨论了织构化的Co-Cr-Mo合金的表面润湿性与COF之间的关系，并揭示了影响表面微观结构的机理。摩擦实验表明，同心圆微织构的摩擦学性能最佳。并且，在10 N的负载条件下，同心圆在20％密度（C-20）的同心圆微织造样品上滑动的同心圆的PEF球的COF和重量损失与未织构的样品相比分别降低了49.22％和52.3％，分别。同时，讨论了织构化的Co-Cr-Mo合金的表面润湿性与COF之间的关系，并揭示了影响表面微观结构的机理。摩擦实验表明，同心圆微织构的摩擦学性能最佳。并且，在10 N的负载条件下，同心圆在20％密度（C-20）的同心圆微织造样品上滑动的同心圆的PEF球的COF和重量损失与未织构的样品相比分别降低了49.22％和52.3％，分别。同时，讨论了织构化的Co-Cr-Mo合金的表面润湿性与COF之间的关系，并揭示了影响表面微观结构的机理。