半水石膏性能与微观结构的探讨  

A Research on the Properties and Microstructure of Hemihydrate Gypsum

作　　者：喻德高[1] 杨新亚[1] 杨淑珍[1] 张丽英[1] 

机构地区：[1]武汉理工大学材料研究与测试中心,武汉430070

出　　处：《武汉理工大学学报》2006年第5期27-29,共3页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(20471046)

摘　　要：XRD、SEM分析表明对α型半水石膏晶体呈短柱状、结晶完好,β型半水石膏晶体呈片状、结晶较差;α型半水石膏水化物晶体呈板柱状,晶体交织形成致密硬化体结构,β型半水石膏水化物晶体呈针状、纤维状,晶体交织形成疏松的硬化体结构。晶体结构与形貌上的差异是导致α型半水石膏与β型半水石膏性能特别是力学强度差异的原因。XRD and SEM analysis are carried out on two hemihydrate gypsums and their hydrations, The results indicate that crystallization of α-hemihydrate gypsum is more perfect than β-hemihydrate gypsum, furthermore, the former takes the shape of short-pole, the latter takes the shape of flake-grain. However, crystallization of α-hemihydrate and β-hemihydrate gypsum hydrations are different, the first one takes the shape of plate and pole, and forms a compact structure, but the second one takes shape of needle and fibre, and forms a loose structure. These differencese result from different properties, specially, mechanics property.

关 键 词：Α-半水石膏 β-半水石膏 微观结构分析 

分 类 号：TB321[一般工业技术—材料科学与工程]