不同粒度大小粉末的微波烧结试验探讨  

Microwave Sintering of Ferrous Metal Powder and Influence of Particle Size

作　　者：吴丹[1] 陈文革[1] 周弦[1] 薛庆旭 

机构地区：[1]西安理工大学材料科学与工程学院,中国西安710048

出　　处：《粉末冶金技术》2015年第3期213-217,共5页Powder Metallurgy Technology

基　　金：西安市科技计划项目(CXY1430(8))

摘　　要：微波烧结是近几年发展起来的一种新型的节能环保烧结技术,有望广泛应用于粉末冶金材料的制备领域。本文对不同粒度组成的金属铁粉,采用微波烧结,研究其粒度组成对微波烧结性能的影响,结果表明,微波可以对金属粉体进行烧结,但需要借助介质材料的预埋处理,实质是介质材料的传导加热与金属本身表面微波加热的复合过程。对相同的微波烧结工艺,金属粉体粒度越小,烧结体密度、硬度越大,孔隙减少,组织更加致密,而且表面与微波耦合的厚度越深。Microwave sintering is a new type of sintering technology in recent years, which is widely used in the field of powder metallurgy metal materials. In this paper, the effects of particle size composition on the microwave sintering character were investigated for the microwave sintered iron powders with different particle size. The results show that metal powder can be microwave sintered, but it needs a pre-barying process. It＇ s a composite process of dielectric material surface heating and microwave heating. For the same microwave sintcring process, the metal particle size smaller, the density and hardness of sintered body greater, the porosity less, the tissue of experimental samples more dense and the thickness of＇ the surface coupling with microwave deeper.

关 键 词：粒度组成 微波烧结 金属粉体 

分 类 号：TF125[冶金工程—粉末冶金]