Alloys from the Ti-Al-Mo ternary system are of high importance in aerospace applications due to their excellent specific strength-to-density ratio, excellent corrosion, and creep resistance up to 600 °C. However, their sliding wear behavior has not been adequately explored. Cp-Ti and Ti-xAl-1Mo (x = 3, 5, 7) based near-alpha titanium alloys were successfully compacted by spark plasma sintering. The effect of Al addition on the densification, microhardness, and wear behavior of the developed alloys was studied. Results from the experiment showed that all compacts were almost fully densified. An increase in the value of the microhardness was recorded from 208 ± 10 to 352 ± 17 HV as the Al content increased. Al additions played an important role in the wear performance of the sintered alloy as detected from the coefficient of friction obtained with the sliding time and varying normal load. The alloyed Ti compacts had improved wear resistance. The wear rate values of alloyed compacts were 14 to 48.54 pct lower compared to the sintered Cp-Ti compacts tested as the Al content increased. The best wear resistance was observed for Ti-7Al-1Mo. Scanning electron microscopy micrographs, energy-dispersive spectroscopy, and wear debris show that the major wear mechanism detected was adhesive wear.

Ti-Al-Mo三元系合金在航空航天应用中具有很高的重要性，因为它们具有出色的比强度与密度比，出色的耐腐蚀性能以及高达600°C的耐蠕变性。但是，它们的滑动磨损行为尚未得到充分研究。Cp-Ti和Ti- x Al-1Mo（x 通过火花等离子体烧结成功地压实了= 3、5、7）的近α钛合金。研究了铝的添加对开发合金的致密化，显微硬度和磨损行为的影响。实验结果表明，所有压块几乎都被致密化。随着Al含量的增加，显微硬度值从208±10 HV增加到352±17 HV。从随滑动时间和变化的法向载荷获得的摩擦系数可以看出，铝的添加在烧结合金的磨损性能中起着重要作用。合金化的钛压块具有改善的耐磨性。随着铝含量的增加，合金压块的磨损率值比测试的烧结Cp-Ti压块低14至48.54 pct。对于Ti-7Al-1Mo，观察到最佳的耐磨性。