CoO掺量对硅锌矿结晶釉非等温晶化性能的影响  

Effects of Mixing Amount of CoO on Non-isothermal Crystallization Behaviors of Willemite Crystalline Glaze

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

机构地区：[1]蒙娜丽莎集团股份有限公司,广东佛山528211 [2]广东省大尺寸陶瓷薄板企业重点实验室,广东佛山528211 [3]广东工业大学机电工程学院,广东广州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：《陶瓷学报》2024年第6期1245-1254,共10页Journal of Ceramics

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：利用辊道窑低温快烧工艺制备硅锌矿结晶釉建筑陶瓷,探究了CoO(着色剂)掺量对硅锌矿结晶釉非等温晶化性能的影响,并基于Kissinger法和水淬急冷处理揭示了结晶釉的非晶晶化机制。结果表明:随着CoO掺量的增加,结晶釉的蓝色逐渐加深,晶花面积占比、晶花直径与结晶相含量均呈先增大后降低的变化规律,三者均在掺加0.6wt.%CoO时达到极大值;硅锌矿结晶釉的非晶晶化机制均为表面析晶协同体积析晶,且适量(0.6 wt.%)CoO的掺加可以降低结晶釉的析晶活化能、提升Avrami指数、增强小角分叉能力,继而可有效促进结晶釉的非晶晶化;而过多CoO(1.0 wt.%)的掺加反而会减弱结晶釉的非晶晶化,导致晶花花瓣完整性和直径尺寸均有所降低。最终,利用辊道窑低温快烧工艺(环温1165℃、烧成周期70 min)成功制得花形结构完整、晶花直径尺寸达2.8 mm、蓝色发色艳丽(b^*值达-50.2)的硅锌矿结晶釉建筑陶瓷。Building ceramics covered with willemite crystalline glaze were prepared with roller kiln at low temperature in short time.The effects of the content of CoO(colorant)on the non-isothermal crystallization performance of willemite crystalline glaze were studied,while the mechanism of amorphous crystallization of the crystalline glaze was revealed by using Kissinger method and water quenching&rapid cooling treatment.The blue color of the crystalline glazed gradually deepened,while the area proportion,diameter and crystal phase content of the crystalline glaze increased first and then decreased with increasing content of CoO.All the three parameters reached the maximum values when the content of CoO was 0.6 wt.%.The mechanism of amorphous crystallization of the willemite crystalline glaze was the surface crystallization synergistically with volume crystallization.The addition of an appropriate content(0.6 wt.%)of CoO is beneficial to reducing the crystallization activation energy,improving Avrami exponent,enhancing the small angle branching ability,and effectively promoting the amorphous crystallization process of the crystalline glaze.However,the excessive content(1.0 wt.%)of CoO would actually weaken the amorphous crystallization of the crystalline glaze,leading to decrease in integrity of the petals and diameter size of the flower-shaped crystal patterns.Finally,building ceramics covered with the willemite crystalline glaze with a integral flower-shaped pattern structure,crystal pattern diameter size of 2.8 mm and bright blue color(b^value of-50.2),were obtained with roller kiln at a relatively low temperature and quick firing process(the ferro firing temperature of 1165℃and firing time of 70 min).

关 键 词：硅锌矿 结晶釉 建筑陶瓷 非等温晶化 晶花 非晶晶化 

分 类 号：TQ174.43[化学工程—陶瓷工业]