钛及钛合金金属粉末注射成形技术的研究进展

钛及钛合金兼具低比重、高比强度、优异的生物相容性和良好的耐腐蚀性,在航空航天、生物医疗、化工、汽车等领域有极大的应用潜力。钛及钛合金金属粉末注射成形技术(metal injection molding,MIM)能够实现中小型复杂形状钛产品的大批量、低成本制备,对于推动钛及钛合金产品的生产及应用具有重要意义。本文介绍了金属粉末注射成形钛及钛合金的特点及优势,从粉末原料、黏结剂体系、粉末注射成形、脱黏和烧结等方面综述了钛及钛合金金属粉末注射成形技术的研究进展,并针对目前存在的主要问题,分析了金属粉末注射成形钛及钛合金的研究方向及发展前景。

Research progress on metal injection molding of titanium and titanium alloys

With an excellent combination property of low density,high specific strength,fantastic bio-compatibility,and good corrosion resistance,titanium and titanium alloys are becoming promising materials in the field of aerospace,bio-medical,chemical industry,automobile,etc.Metal injection molding (MIM) can realize small and medium-sized products of titanium and titanium alloys with complex shape by low cost and mass production,which makes the MIM technique have the great significance in promoting the development and application of titanium and titanium alloy products.In this paper,the main characteristics and advantages of titanium and titanium alloys fabricated by MIM were briefly introduced.The recent research progresses on MIM of titanium and titanium alloys were reviewed,especially in terms of feedstock powders,binder systems,injection molding,debinding,and sintering processes.Finally,in view of the existing problems,the further development and research direction on metal injection molding of titanium and titanium alloys were investigated.