粉末注射成形Ti-12Mo合金的摩擦磨损性能  

Friction and Wear Performance of Ti-12Mo Alloy by Powder Injection Molding

作　　者：支玲玲[1] 路新[1] 孙博[1] 岩雨[1] 刘程程[1] 曲选辉[1] 

机构地区：[1]北京科技大学新金属材料国家重点实验室,北京100083

出　　处：《稀有金属材料与工程》2017年第3期675-679,共5页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(51204015);新金属材料国家重点实验室开放基金(2012Z-10)

摘　　要：选择粉末注射成形制备的Ti-12Mo合金为主要研究对象,与粉末冶金冷压烧结制备的纯Ti和TC4合金,以及在口腔材料应用最广的铸造TC4钛合金作对照,研究分析钛及其合金的耐磨性能及磨损机理。结果表明,在相同摩擦磨损条件下,Ti-12Mo合金耐磨性要优于冷压烧结制备的纯Ti和TC4合金,与铸造TC4合金相当;Ti-12Mo合金为魏氏体组织,由β相及α相组成,其显微硬度HV为3100 MPa,其摩擦系数基本保持在0.43左右,低于其他3种钛合金;Ti-12Mo合金磨损机制主要为磨粒磨损。The friction and wear performance of Ti-12 Mo alloy fabricated by powder injection molding（PIM） were investigated. It was compared with that of as-PMed Ti and TC4 alloy and as-cast TC4 alloy, which is the most widely used in the dental materials field. The results show that the Ti-12 Mo alloy exhibits higher wear resistance than the as-PMed Ti and TC4 alloy, and it is close to the as-cast TC4 alloy under the same sliding friction conditions. The Ti-12 Mo alloy shows a typical Widmanstatten structure, consisting of β-Ti and α-Ti phases. The microhardness（HV） of Ti-12 Mo alloy is about 3100 MPa, and the friction coefficient is stabilized at about 0.43, which are lower than those of the other three alloys. The wear mechanisms of Ti-12 Mo alloy（PIM） is dominated by abrasive wear.

关 键 词：粉末注射成形 Ti-12Mo合金 摩擦磨损性能 磨损机制 

分 类 号：TG146.23[一般工业技术—材料科学与工程]