硅、铝溶胶对碳化硅窑具的结构及性能的影响  

Effect of Silicon and Aluminum Sol on Structure and Properties of Silicon Carbide Kiln

作　　者：尹朋岸 王子晨[1] 郭兴忠[1] 杨辉[1] 杨新领 郑浦 

机构地区：[1]浙江大学材料科学与工程学院,杭州310027 [2]台州东新密封有限公司,台州318000

出　　处：《硅酸盐通报》2016年第11期3639-3643,共5页Bulletin of the Chinese Ceramic Society

基　　金：浙江省工程技术研究中心建设计划(2013E10033)

摘　　要：以SiC颗粒为骨料,硅微粉为基体相,硅、铝凝胶在高温下形成纳米颗粒作为增强相制备了碳化硅窑具,分析了硅、铝溶胶的添加量对碳化硅窑具烧结特性、力学性能、物相组成及显微结构的影响规律。结果表明,硅、铝溶胶的添加可以增强碳化硅窑具的力学性能。当单独添加硅溶胶量为2.0%时,其抗弯强度可达19.67 MPa,当单独添加铝溶胶的量为1.1%时,抗弯强度为19.26 MPa,当同时添加硅、铝溶胶总量为3.06%时,其抗弯强度可达到18.10 MPa,但过多溶胶的引入会导致碳化硅窑具中气孔的增多从而影响碳化硅窑具的致密化。SiC particles is used as aggregate, and silica powder is used as matrix phase, nanoparticles is used to reinforce silicon carbide ceramic kiln system caused by silicone gel and alumina gel under high temperature, the sintering properties, mechanical properties, phase composition and microstructure is analysied,nano-toughening mechanism of silicon carbide kiln is also investigated. The results show that the addition of silicon and aluminum sol can enhance the mechanical properties of silicon carbide kiln furniture. When silicon sol was added separately at 2.0%, the flexural strength can reach 19.67 MPa, when aluminum sol was added separately at 1. 1%, flexural strength is 19.26 MPa. When silica and alumina sol was added together at 3.06%, the flexural strength can reach 18.10 MPa, but too many sol introduction will lead to increased porosity in the silicon carbide kiln which affects the densification of silicon carbide kiln.

关 键 词：碳化硅窑具 溶胶 性能 显微结构 

分 类 号：TQ174[化学工程—陶瓷工业]