摘要
以K2O-CaO-Al_2O_3-SiO_2系统为基础,通过添加氧化锌和硼酸钙,制备出了1120℃烧成的高白度无锆低硼低温分相乳浊釉,并借助TEM、XRD、FTIR和白度仪等测试手段研究了ZnO/B_2O_3对乳浊釉分相结构和白度的影响,探讨了其乳浊机理。结果表明:随着ZnO/B_2O_3的增大,釉面白度呈先增后降趋势,当ZnO/B_2O_3为4. 04时达最大值为80. 5%。随着ZnO/B_2O_3的增大,分相粒子尺寸逐渐减小,数量逐渐增多。ZnO/B_2O_3过高,分相粒子尺寸太小,远小于可见光波长,不利于乳浊度的提高。
Based on the K 2O-CaO-Al 2O 3-SiO 2 system,the high whiteness zirconium-free and low B 2O 3 content phase separation opaque glazes sintered at 1120℃were prepared by adding zinc oxide and calcium borate.The effect of ZnO/B 2O 3 ratio on the phase separation structure and whiteness of opaque glaze were studied by TEM,XRD,FTIR and whiteness meter,and the opacifying mechanism was discussed.The results show that with the increase of ZnO/B 2O 3 ratio,the whiteness of glaze increases at first and then decreases.When ZnO/B 2O 3 ratio is 4.04,the maximum whiteness of 80.5%is achieved.With the increase of ZnO/B 2O 3 ratio,the size of phase separation particles gradually decreased and the number of phase separation particles gradually increased.If the ratio of ZnO/B 2O 3 is too high,the size of phase separation particles is far less than the wavelength of visible light,which is not conducive to the improvement of opacity.
作者
苗立锋
包镇红
吴道福
江伟辉
MIAO Li-feng;BAO Zhen-hong;WU Dao-fu;JIANG Wei-hui(National Engineering Research Center for Domestic and Building Ceramics, Jingdezhen Ceramic Institute, Jingdezhen 333001, China)
出处
《人工晶体学报》
EI
CAS
北大核心
2019年第1期90-94,100,共6页
Journal of Synthetic Crystals
基金
江西省教育厅科学技术研究项目(GJJ160882)
关键词
分相
低温
乳浊釉
phase separation
low temperature
opaque glaze
