Ti6Al4V–5Cu alloys have potential biomedical applications due to their adequate antibacterial properties. However, the wear and corrosion properties of these alloys are also crucial for dental implants. In the present study, Ti6Al4V–5Cu alloys were fabricated by selective laser melting (SLM). The microstructure and composition of Ti6Al4V–5Cu alloys by SLM were evaluated. The wear properties of the alloys in the simulated saliva environment and the atmospheric environment, as well as the electrochemical properties in the simulated saliva environment, were systematically investigated. The results showed that the crystal structure of Ti6Al4V–5Cu alloys was mainly composed of α‐Ti and Ti₂Cu. In the SLM process, no preferred texture was observed due to the complex direction of the heat flux. The formation of Ti₂Cu can improve the strength of the material and make the titanium copper alloy have higher microhardness. Ti6Al4V–5Cu alloy showed a satisfactory wear resistance in both wear media. The addition of Cu reduced the second‐phase content of the alloy. Meanwhile, the number of microcells was reduced, which was a positive factor to improve the corrosion resistance of the alloys.

中文翻译：

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用于牙科植入物的选择性激光熔融Ti6Al4V-5Cu合金的设计与表征

Ti6Al4V-5Cu合金具有足够的抗菌特性，因此具有潜在的生物医学应用前景。但是，这些合金的磨损和腐蚀性能对于牙科植入物也至关重要。在本研究中，通过选择性激光熔化（SLM）制备了Ti6Al4V-5Cu合金。通过SLM评估了Ti6Al4V-5Cu合金的组织和成分。系统地研究了合金在模拟唾液环境和大气环境中的磨损性能，以及在模拟唾液环境中的电化学性能。结果表明，Ti6Al4V-5Cu合金的晶体结构主要由α-Ti和Ti ₂ Cu组成。在SLM工艺中，由于热通量的方向复杂，没有观察到优选的织构。钛的形成₂ Cu可以提高材料的强度，并使钛铜合金具有更高的显微硬度。Ti6Al4V-5Cu合金在两种磨损介质中均显示出令人满意的耐磨性。铜的添加降低了合金的第二相含量。同时，减少了微孔的数量，这是提高合金耐腐蚀性的积极因素。