用共沉降法制备组分连续变化的梯度材料  

Fabrication of functionally graded material with continuous change of composition by co - sedimentation

作　　者：杨中民[1] 张联盟[2] 

机构地区：[1]武汉理工大学 材料复合新技术国家重点实验室,湖北武汉430070 [2]中国科学院 上海光学精密机械研究所,上海210080

出　　处：《材料科学与工艺》2002年第3期326-330,共5页Materials Science and Technology

基　　金：国家自然科学基金(59771028和50171049);教育部重点基金(1999049702)

摘　　要：从最简单的沉降过程——单一粒径粉末的沉降开始,描述了颗粒沉降的特点,并简述了用共沉降法制备梯度材料的基本原理.着重阐述了用共沉降法制备梯度材料的基本工艺过程.介绍了用共沉降法制备梯度材料的现状和使具有不同烧结性能的组元同是致密化这一目前仍需解决的关键问题.The settling behavior of single - size particles in a suspension is a simpler starting point for the explanation of the co - sedimentation characteristics of particles of different sizes and densities. Using this approach this paper briefly introduces the basis theory used in the fabrication procedure of functionally graded material based on co - sedimentation, followed by focusing on the description of co - sedimentation process. In additon the authors reviewed the development history of co - sedimentation used to prepare functionally graded materials and point out the key problems that should be solved immediately.

关 键 词：梯度材料 颗粒沉降过程 共沉降法 制备 组分连续变化 

分 类 号：TB381[一般工业技术—材料科学与工程]