材料科学与工程学报2017，Vol.35Issue(4)：675-680,6.DOI:10.14136/j.cnki.issn 1673-2812.2017.04.032
颗粒整形对碳化硅陶瓷密封材料成型及烧结性能的影响
Effects of Particle Reshaping on Forming and Sintering of Silicon Carbide Ceramic Seals
摘要
Abstract
Silicon carbide (SiC) powders were reshaped by ball grinder and made into sealing materials by reaction sintering.Effects of particle reshaping on forming,sintering behavior,microstructure and mechanical properties were studied.The reshaped silicon carbide powder has a higher degree of sphericity and more uniform particle size distribution.Both the tap density and green body density of the reshaped silicon carbide powder enhance apparently.The microstructure of the sintered body becomes more uniform with major crystalline phase 6H-SiC,better distributed Si and less residual carbon.Particle reshaping improves the ceramic forming and mechanical properties apparently.When the pressure is 15MPa,the pressing density and the sintered body density are tested as 2.08g/cm3 and 3.06g/cm3,with the flexural strength and fracture toughness reaching 456MPa and 3.87MPa·m1/2,respectively关键词
整形/反应烧结/碳化硅陶瓷/密封材料/显微结构/性能Key words
post reshaping/SiC ceramic/seals/microstructure/properties分类
化学化工引用本文复制引用
杨新领,王子晨,李志强,郭兴忠,杨辉,郑浦..颗粒整形对碳化硅陶瓷密封材料成型及烧结性能的影响[J].材料科学与工程学报,2017,35(4):675-680,6.基金项目
浙江省工程技术研究中心建设计划资助项目(2013E10033) （2013E10033）
