陶瓷流延颗粒排列的三维模型研究  

Research on Three-dimensional Model for Oriented Particles in Tape Casting

作　　者：彭周[1] 肖建中[1] 梅思杨[1] 雷超[1] 赵少林[1] 

机构地区：[1]华中科技大学材料科学与工程学院,武汉430074

出　　处：《材料导报》2012年第4期136-138,共3页Materials Reports

基　　金：华中科技大学国家重大基础研究项目(61362)

摘　　要：陶瓷颗粒易在流延成形过程中产生取向性排列,使得流延坯体本身在烧结后容易出现收缩各向异性。建立了三维椭球模型来定量研究陶瓷颗粒的排列取向性,发现在流延坯体中颗粒排列取向明显,且颗粒形态比与三维形状因子间呈指数函数关系,颗粒的各向异性率和三维形状因子之间呈线性关系。Anisotropic sintering shrinkage in ceramics tape casting is as a result of oriented particels in the shear field. Quantitative analysis on oriented particles based on the three-dimensional spheroidal model. The results show that, particleisr aspect ratio is a simple exponential function of three-dimensional shape factor, and the linear relation between particlers aspect ratio and three-dimensional shape faetor is good.

关 键 词：陶瓷颗粒 流延成形 三维模型 

分 类 号：TB302.1[一般工业技术—材料科学与工程]