摘要
通过调整配方组成,成功制备了以廉价氧化铁为着色剂的R_2O-RO-SiO_2-B_2O_3-Al_2O_3多元系统花釉,重点探讨了氧化铁含量、釉料化学组成关系对釉面花色效果的影响,采用扫描电子显微镜(SEM)研究了釉层显微结构。结果表明:Fe_2O_3容易使R_2O-RO-SiO_2-B_2O_3-Al_2O_3系统釉面出现黄、绿、蓝等釉色效果,而该花色效果的产生主要由分相、析晶作用所致。胞状分相结构的产生促使釉面色彩及肌理多样化,但Fe_2O_3加入量过多,容易饱和析晶,抑制胞状分相结构的产生,使釉面颜色逐渐变深。硼加入量及碱金属含量对釉面分相效果影响显著,当n(B_2O_3)/n(Al_2O_3)从2.01减小至1.19、n(R_2O)/n(RO)从0.28增大至0.40,釉面分相效果明显减少。
Fancy glaze composed of R2O-RO-SiO2-B2O3-Al2O3 multi-component system and low-priced iron oxide colouring agent was successfully prepared by adjusting the formula composition. The effects of iron oxide content and chemical composition on glaze surface color were discussed. The microstructure of glaze layer was studied by scanning electron microscopy（SEM）. The results showed that iron oxide could easily render varied colors to the R2O-RO-SiO2-B2O3-Al2O3 glaze such as yellow,green and blue,mainly caused by crystallization and phase-separation. Cellular split phase structure prompted the diversity of glaze color and texture. But the glaze was easily crystallized with excessive iron oxide,which inhibited the growth of cellular split phase structure and made the glaze color saturated. The chemical composition of B2O3 and alkalis significantly affected the effect of phase-separation. Glaze phase splitting effect was significantly reduced when the n（B2O3）/n（Al2O3） was from 2.01 to 1.19,and n（R2O）/n（RO） from 0.28 to 0.40.
出处
《陶瓷学报》
CAS
北大核心
2015年第6期659-662,共4页
Journal of Ceramics
关键词
陶瓷釉料
分相
析晶
氧化铁
glaze material
phase-separation
crystallization
iron oxide
作者简介
通信联系人：王超（1982-），男，硕士，讲师。
