不同熔剂体系制备的陶瓷岩板及其性能  

Ceramic Slabs Prepared Using Different Flux System and Its Properties

作　　者：赵存河 聂光临 刘一军 左飞 庞伟科 汪庆刚 包亦望 ZHAO Cunhe;NIE Guanglin;LIU Yijun;ZUO Fei;PANG Weike;WANG Qinggang;BAO Yiwang(Monalisa Group Co.,Ltd.,Foshan 528211,China;Guangdong Provincial Key Laboratory of Large Ceramic Plates,Foshan 528211,China;School of Electromechanical Engineering,Guangdong University of Technology,Guangzhou 510006,China;State Key Laboratory of Green Building Materials,China Building Materials Academy,Beijing 100024,China)

机构地区：[1]蒙娜丽莎集团股份有限公司,佛山528211 [2]广东省大尺寸陶瓷薄板企业重点实验室,佛山528211 [3]广东工业大学机电工程学院,广州510006 [4]中国建筑材料科学研究总院有限公司绿色建筑材料国家重点实验室,北京100024

出　　处：《硅酸盐通报》2024年第9期3386-3398,共13页Bulletin of the Chinese Ceramic Society

基　　金：广东省基础与应用基础研究基金(2023A1515012676);广东省科技计划项目(2022B1212020001)。

摘　　要：本文利用钾钠质与钙镁质原料配制了SiO_(2)-Al_(2)O_(3)-K_(2)O(Na_(2)O)(K_(2)O-Na_(2)O)与SiO_(2)-Al_(2)O_(3)-CaO-MgO(CaO-MgO)体系陶瓷,系统探究了熔剂体系(CaO-MgO、K_(2)O-Na_(2)O)在不同烧结温度(1 110~1 210℃)下对陶瓷岩板烧结性能和力学性能的影响,并利用XRD和SEM研究陶瓷岩板的物相组成和显微结构演变规律。结果表明:CaO-MgO与K_(2)O-Na_(2)O体系陶瓷的最佳烧结温度分别为1 170、1 150℃,钙镁质原料的引入导致CaO-MgO体系陶瓷的烧成收缩率与体积密度均低于K_(2)O-Na_(2)O体系陶瓷,且CaO-MgO体系陶瓷中气孔尺寸与含量均大于K_(2)O-Na_(2)O体系陶瓷;钙镁质原料的引入会促进CaO-MgO体系陶瓷中钙长石与α-堇青石的形成,且可以大幅度提升CaO-MgO体系的结晶相含量(质量分数为75.66%,较K_(2)O-Na_(2)O体系高56%)。高结晶相含量导致的弥散强化效果大于气孔对强度的劣化作用,CaO-MgO体系的弯曲强度为(56.9±2.6) MPa、断裂功为(183.2±9.5) J/m^(2)、极限应变为(7.4±0.1)×10^(-4)、比强度为(24.9±1.1) kN·m·kg^(-1),较K_(2)O-Na_(2)O体系分别提高了15%、25%、11%、23%,这说明CaO-MgO熔剂体系陶瓷更加适用于高强韧、高柔性陶瓷岩板的制备。In this work,the K-Na and Ca-Mg based raw materials were used to prepare SiO_(2)-Al_(2)O_(3)-K_(2)O(Na_(2)O)(K_(2)O-Na_(2)O) and SiO_(2)-Al_(2)O_(3)-CaO-MgO(CaO-MgO) system ceramics,respectively.The impacts of flux systems(CaO-MgO,K_(2)O-Na_(2)O) on sintering characteristic and mechanical properties of ceramic slabs prepared at different firing temperatures(1 110~1 210 ℃) were investigated systematically,and the evolution rule of phase composition and microstructure was studied by XRD and SEM.The results show that the optimal firing temperatures for CaO-MgO and K_(2)O-Na_(2O) system ceramics are 1 170 and 1 150 ℃,respectively.The introduction of Ca-Mg based raw materials would lead to the lower firing shrinkage and bulk density of CaO-MgO system ceramics compared to K_(2)O-Na_(2O) system ceramics,meanwhile the pore size and content in CaO-MgO system ceramics are larger than those in K_(2)O-Na_(2O) system.The formation of anorthite and α-cordierite in CaO-MgO system ceramics is promoted by the introduction of Ca-Mg based raw materials,and the crystalline phase content of CaO-MgO system ceramics is significantly increased to be 75.66%(mass fraction),which is 56% higher than that of K_(2)O-Na_(2O) system.The dispersion strengthening effect caused by high crystalline phase content is greater than degradation effect of pore on mechanical strength.The flexural strength of CaO-MgO system ceramics is(56.9±2.6) MPa,fracture energy is(183.2±9.5) J/m^(2),failure strain is(7.4±0.1)×10^(-4) and specific strength is(24.9±1.1) kN·m·kg^(-1),which are 15%,25%,11%,and 23% higher than those of K_(2)O-Na_(2O) system ceramics,respectively,indicating that the CaO-MgO flux system is more suitable for the manufacturing of high strength,toughness,and flexibility ceramic slabs compared with the traditional K_(2)O-Na_(2O) system.

关 键 词：陶瓷岩板 熔剂体系 烧成温度 力学性能 弯曲强度 断裂功 物相组成 微观结构 

分 类 号：TU523[建筑科学—建筑技术科学]