Preparation of the Preform of Pure Carbon Reaction Bonded Silicon Carbide by In-situ Consolidation Molding Method  

作　　者：李美娟 

机构地区：[1]Wuhan University of Technology

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2004年第4期43-45,78,共4页武汉理工大学学报（材料科学英文版）

基　　金：FundedbytheKeyResearchProjectofChina (96 A10 0 1 07)andtheKeyProjectofWuhanScienceandTechnologyCommit tee(2 0 0 0 10 0 10 0 3)

摘　　要：A new kind of in-situ ceramic consolidation molding process was investigated on the basis of the characteristics of starch swelling in water and gelatinizing when heated. The SiC ceramic suspension containing about 50vol% solids loading and about 3wt% starch can be cast and molded into various complex-shape SiC ceramic parts in a water-thermostat. The dry shrinkage of the green body was less than 1.0% when the solid volume fraction of SiC suspension was up to 52.5%. The density and pore size were homogeneously distributed inside the biscuits. Soaked with melt silicon in a vacuum arc furnace, the biscuits were turn into SiC ceramic materials with homogeneous structure and high performances.A new kind of in-situ ceramic consolidation molding process was investigated on the basis of the characteristics of starch swelling in water and gelatinizing when heated. The SiC ceramic suspension containing about 50vol% solids loading and about 3wt% starch can be cast and molded into various complex-shape SiC ceramic parts in a water-thermostat. The dry shrinkage of the green body was less than 1.0% when the solid volume fraction of SiC suspension was up to 52.5%. The density and pore size were homogeneously distributed inside the biscuits. Soaked with melt silicon in a vacuum arc furnace, the biscuits were turn into SiC ceramic materials with homogeneous structure and high performances.

关 键 词：in-situ consolidation molding process STARCH SiC 

分 类 号：O613[理学—无机化学]