富氧燃烧气氛条件下烧成陶瓷的物相结构与性能研究  

Microstructure and Properties of Ceramics Sintered with Oxygen-Enriched Atmosphere

作　　者：何峰[1] 徐茜[1] 戚昊[1] 田沙沙[1] 文进[1] 谢峻林[1] 

机构地区：[1]武汉理工大学硅酸盐建筑材料国家重点实验室,湖北武汉430070

出　　处：《陶瓷学报》2016年第1期11-16,共6页Journal of Ceramics

基　　金："十二五"国家科技支撑计划(2012BAA08B04)

摘　　要：以K_2O-Al_2O_3-SiO_2系统日用陶瓷为研究对象,主要改变K_2O组分含量及富氧气氛中氧气浓度,采用XRD及SEM等现代测试方法来研究K_2O含量变化、烧成温度及氧气浓度对陶瓷显微结构的影响;通过性能测试(抗折强度、密度)分析陶瓷性能的变化。经过实验和测试,得到了富氧气氛中O_2浓度的增加及组分中K_2O的增加对于陶瓷试样的结构改善、机械强度提高均具有促进作用。与普通空气烧成相比,富氧技术的应用能适当的缩短烧成周期,给陶瓷工业带来一定能源节约。Domestic ceramics, with chemical composition K_2O-Al_2O_3-SiO_2, was the research object in this paper. The oxygen-enriched atmosphere was utilized to sinter ceramics. The effects of K_2O content and oxygen concentration changes on the microstructure of the ceramics were studied using XRD, SEM and other modern testing methods; their impact on ceramic performance was studied through performance tests on bending strength, density, etc. Results of these experiments and tests show the increase in the K_2O content in a ceramic component and the oxygen concentration in the atmosphere leads to improved crystallization of the ceramic body and increased density and flexural strength. Compared with the conventional air, the oxygen-enriched atmosphere could effectively shorten the sintering cycle and contribute to energy-saving and emission-reduction.

关 键 词：富氧燃烧气氛 O_2浓度 K_2O含量 

分 类 号：TQ174.75[化学工程—陶瓷工业]