{"title":"溶胶渗透生物模板后控制烧结制备生物形态多孔SiC和SiO2陶瓷","authors":"Anwesha Maity, Nilanjan Santra, Nijhuma Kayal","doi":"10.1007/s41779-024-01108-5","DOIUrl":null,"url":null,"abstract":"<div><p>This study investigated the preparation of biomorphic porous silicon carbide (SiC) and silica (SiO<sub>2</sub>) ceramics by controlled atmosphere heat treatment of silica sol infiltrated Gymnosperm pine wood derived carbon precursor. The SiO<sub>2</sub> -infiltrated carbon preform was heat-treated in the temperature range 1450–15,500 C in flowing argon and under vacuum to obtain porous SiC ceramics. The porous SiO<sub>2</sub> ceramic was obtained by heat-treatment of silica sol infiltrated C template in air at 1385<sup>o</sup>C for 4 h. The effect of ceramization condition, the reaction mechanism, morphology of the porous ceramics and their phase composition were investigated. The grains of the microcellular SiC were found to be composed of nanocrystals and apparent crystallite size was found to be 123 nm.</p></div>","PeriodicalId":673,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"61 3","pages":"897 - 907"},"PeriodicalIF":2.1000,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Preparation of biomorphic porous SiC and SiO2 ceramics by sol infiltration into biotemplate followed by controlled sintering\",\"authors\":\"Anwesha Maity, Nilanjan Santra, Nijhuma Kayal\",\"doi\":\"10.1007/s41779-024-01108-5\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>This study investigated the preparation of biomorphic porous silicon carbide (SiC) and silica (SiO<sub>2</sub>) ceramics by controlled atmosphere heat treatment of silica sol infiltrated Gymnosperm pine wood derived carbon precursor. The SiO<sub>2</sub> -infiltrated carbon preform was heat-treated in the temperature range 1450–15,500 C in flowing argon and under vacuum to obtain porous SiC ceramics. The porous SiO<sub>2</sub> ceramic was obtained by heat-treatment of silica sol infiltrated C template in air at 1385<sup>o</sup>C for 4 h. The effect of ceramization condition, the reaction mechanism, morphology of the porous ceramics and their phase composition were investigated. The grains of the microcellular SiC were found to be composed of nanocrystals and apparent crystallite size was found to be 123 nm.</p></div>\",\"PeriodicalId\":673,\"journal\":{\"name\":\"Journal of the Australian Ceramic Society\",\"volume\":\"61 3\",\"pages\":\"897 - 907\"},\"PeriodicalIF\":2.1000,\"publicationDate\":\"2024-10-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of the Australian Ceramic Society\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s41779-024-01108-5\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, CERAMICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the Australian Ceramic Society","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s41779-024-01108-5","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
Preparation of biomorphic porous SiC and SiO2 ceramics by sol infiltration into biotemplate followed by controlled sintering
This study investigated the preparation of biomorphic porous silicon carbide (SiC) and silica (SiO2) ceramics by controlled atmosphere heat treatment of silica sol infiltrated Gymnosperm pine wood derived carbon precursor. The SiO2 -infiltrated carbon preform was heat-treated in the temperature range 1450–15,500 C in flowing argon and under vacuum to obtain porous SiC ceramics. The porous SiO2 ceramic was obtained by heat-treatment of silica sol infiltrated C template in air at 1385oC for 4 h. The effect of ceramization condition, the reaction mechanism, morphology of the porous ceramics and their phase composition were investigated. The grains of the microcellular SiC were found to be composed of nanocrystals and apparent crystallite size was found to be 123 nm.
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Journal of the Australian Ceramic Society since 1965
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