加镍钨粉的活化烧结研究进展  

Activated Sintering of Nickel-Doped Tungsten

作　　者：欧阳明亮[1] 秦明礼[1] 曲选辉[1] 罗铁钢[1] 

机构地区：[1]北京科技大学,北京100083

出　　处：《稀有金属材料与工程》2009年第A01期122-125,共4页Rare Metal Materials and Engineering

基　　金：国家"973"计划(2006CB605207);国家自然科学基金重点项目(50634010);教育部长江学者和创新团队发展计划(I2P407)资助项目

摘　　要：钨具有高密度、高熔点、低的热膨胀系数、优异的导电导热性能以及良好的耐腐蚀性能,在许多领域得到了广泛的应用,但由于熔点高,钨的烧结致密化困难。活化烧结是制备高密度和高性能钨及其合金材料的重要方法,其中添加镍元素是钨粉活化烧结最重要的手段之一。本研究从镍的活化效果、掺杂含量以及活化机理方面综述了镍对钨的活化烧结作用,并提出了添加金属元素的钨粉活化烧结的研究方向。Tungsten has a series of good qualities, such as high density, high melting point, low coefficient of thermal expansion, excellent property of electricity and heat conduction, and good property of corrode resistant, so it has been widely used in many fields. Because of its high melting point, it is very hard to get the material of high density by common way of sintering. Activated sintering is an important way to manufacture the material of high density and good properties, and the addition of a small amount of Ni to W powder has been the most important way. In this paper, activated sintering effect of nickel, the optimum doping content and some possible activated sintering mechanisms of nickel-doped tungsten are reviewed, and some suggestions are provided for the research of activated sintering of tungsten and tungsten alloys .

关 键 词：钨:镍 烧结机理 活化烧结 

分 类 号：TF841.1[冶金工程—有色金属冶金]