摘要
采用600℃低温氧化处理对Ti6Al4V合金进行了表面改性,利用OM、AFM、XRD、显微硬度仪和磨损试验机等表征与考察氧化表面基本特性及磨损性能。结果表明:低温氧化处理使Ti6Al4V表面形成了金红石型TiO2氧化层,表面颜色、形貌、粗糙度和组织发生了变化,并有效地提高了表面硬度。在Ti6Al4V/Cr12MoV摩擦体系中,低温氧化处理的钛合金磨损量仅为未处理的1.52%,但氧化100h时,磨损量略有增加;在Ti6Al4V/UHMWPE摩擦体系中,低温氧化处理不仅提高了Ti6Al4V自身的磨损性能,而且也间接地改善了UHMWPE的磨损性能。
Ti6Al4V alloy was surface engineered by low temperature （600℃） oxidation process. The modified surfaces were characterized by OM, AFM, XRD, hardometer and tribometer. The experimental results showed that rutile TiO2 formed onto oxidized surface and the alterations in surface colour, morphology, topography and microstructure were induced by low temperature oxidation process, thus significantly improving in the micro hardness of Ti6Al4V alloy. In the Ti6Al4V/Cr12MoV tribological system, the wear volume of oxidized Ti6Al4V alloy was found to be 1.52% as compared to untreated samples. Moreover, in a Ti6Al4V/UHMWPE tribological system, a low temperature oxidation process not only improved the wear - resistance of Ti6Al4V alloy itself, but also improved the wearresistance of UHMWPE.
出处
《上海金属》
CAS
2008年第3期13-16,共4页
Shanghai Metals
关键词
TI6AL4V钛合金
低温氧化处理
摩擦磨损
表面改性
Ti6Al4V Titanium Alloy, Low Temperature Oxidation Process, Wear Resistance, Surface Modification
