陶瓷流延颗粒排列的定量图像研究  

Quantitative Image Analysis on Oriented Particles in the Tape Casting Green Body

作　　者：彭周[1] 肖建中[1] 梅思杨[1] 荣立[1] 李向东[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：《硅酸盐通报》2011年第6期1260-1263,1272,共5页Bulletin of the Chinese Ceramic Society

基　　金：国家重大基础研究项目(No.61362)

摘　　要：陶瓷粉体颗粒易在流延成形过程中产生取向性分布,使得流延坯体本身在烧结后容易出现收缩各向异性。采用图像处理的办法测量流延坯体中的颗粒取向,利用数据挖掘技术对所得结果进行整理。结果表明流延坯体中不同层位的颗粒具有不同的排列取向,上下层颗粒的丰度和各向异性率之间都呈幂函数关系。Ceramic powder particles are prone to form oriented distribution during tape casting,resulting in anisotropic shrinkage of green body in sintering.Image quantitative analysis is used to investigate the discipline of oriented particles,and data mining technology is used to deal with the results.It is found that the particles of different layers exhibit an anisotropic structure in the green body.Both the two layer＇s particles are related power function with the abundance and anisotropy ratio.

关 键 词：陶瓷颗粒 流延成形 图像分析 丰度 各向异性率 

分 类 号：TB302[一般工业技术—材料科学与工程]