稀土强化烧结粉末钛合金的添加形态的探讨  

Review on the adding morphology for rare earth to enhanced sintering in powder metallurgy titanium alloys

作　　者：陈华[1] 肖健[1] 陈杰[1] 廖益龙[1] 邱贵宝[1] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400044

出　　处：《材料保护》2013年第S1期89-91,共3页Materials Protection

基　　金：国家级大学生创新训练(51090383);国家自然科学基金(51174243)

摘　　要：稀土具有很强的电负性,粉末钛合金添加稀土能够夺钛基体表面的氧,净化颗粒表面,促进烧结,同时形成的高熔点稀土氧化物弥散分布在基体中可以抑制晶粒的长大,细化组织,提高材料的性能。因此,从粉末钛合金强化烧结机制出发,介绍了粉末冶金钛合金中稀土元素的各种潜在的添加形态,并着重评述了最有希望实用化的稀土-铝系中间合金粉末在粉末钛合金中的应用情况。Rare earth can able to capture the oxygen from the surface of bulk titanium in powder metallurgy to promote sintering,due to its higher negative electricity.Addition,theformation of rare earth oxides with high melting point can inhibit the grain growth in the matrix,refine organization and then improve the properties of material.Therefore,from the point of enhanced sintering view,the varied potential adding morphologies of rare earth in PM-Ti alloys were introduced.And the most promising practical of RE-Al intermediate alloy powder was emphatically reviewed.

关 键 词：稀土 强化烧结 添加形态 粉末钛合金 

分 类 号：TF124.5[冶金工程—粉末冶金]