Z值对凝胶注模成型SiC-Sialon材料烧结性能的影响  

Effect of the value of Z on sintering properties of SiC-Sialon by gelcasting

作　　者：宋焕巧[1] 于之东[2] 卜景龙[2] 

机构地区：[1]河北理工学院河北省无机非金属材料重点实验室,河北唐山063009 [2]唐山学院,河北唐山063000

出　　处：《河北理工学院学报》2004年第2期95-98,共4页Journal of Hebei Institute of Technology

基　　金：国家自然科学基金项目(50172007);河北省教育厅基金(2003222)

摘　　要：Z值对SiC-Sialon材料的结构和性能,如烧结性能有重要的影响。本实验对利用先进的凝胶注模成型工艺制备的形状复杂、性能优良的SiC-Sialon坯体,在氮气气氛,1570℃下烧结,制出抗折强度大于55MPa。体积密度大于 3.08g/cm^3的SiC-Sialon制品。研究结果表明,在一定的实验条件下,Z值为2的Sialon的晶型发育的最好,此时SiC-Sialon材料的致密化也最好,强度最大。The value of Z is a fundamental factor which decides the construction and main properties of SiC-Sia- lon, such as sintering properties, This experiment has sintered SiC-Sialon produced by gelcasting at 1570℃ in at- mosphere of N_2 SiC-Sialon material with bleding strength more than 55 Mpa and volume density more than 3. 08g/ cm^3 has been produced. It was discovered that the Sialon prepared by the feeding value of Z=2 had better crystal, at the same time, higher densification and blending strength of SiC-Sialon.

关 键 词：Z值 凝胶注模成型 SiC-Sialon材料 烧结性能 陶瓷材料 耐火材料 

分 类 号：TB321[一般工业技术—材料科学与工程] TQ174.62[化学工程—陶瓷工业]