硅酸盐通报2024，Vol.43Issue(1)：312-316,353,6.
碳源对反应烧结碳化硅性能的影响
Effects of Carbon Sources on Properties of Reaction-Bonded Silicon Carbide
摘要
Abstract
The carbon black and graphite were used as carbon sources to fabricate reaction-bonded SiC,and the total content of carbon sources was 10％(mass fraction,the same below).The effects of different ratios of carbon black and graphite on properties of reaction-bonded SiC were investigated.The results show that the reaction-bonded SiC with 4％carbon black and 6％graphite has good mechanical properties,the flexural strength and fracture toughness reach to 251.7 MPa and 4.29 MPa·m1/2.The mineral composition of reaction-bonded SiC was measured by XRD,the Rietveld simulation results of XRD patterns were adopted to measure phase content.The free Si content in reaction-bonded SiC with 4％carbon black and 6％graphite is 24.44％(mass fraction).The free Si content in reaction-bonded SiC with 10％graphite reaches to 28.57％(mass fraction),which is higher than that of the former.The decrease of free Si contributes to the improvement of mechanical properties of reaction-bonded SiC.关键词
反应烧结碳化硅/炭黑/石墨/力学性能/游离SiKey words
reaction-bonded SiC/carbon black/graphite/mechanical property/free Si分类
化学化工引用本文复制引用
张喜飞,陈定,顾华志,黄奥,付绿平..碳源对反应烧结碳化硅性能的影响[J].硅酸盐通报,2024,43(1):312-316,353,6.基金项目
国家自然科学基金(52002295,52172023) （52002295,52172023）
