硅酸盐通报2024，Vol.43Issue(4)：1506-1514,9.
氧化钪对钾长石结晶釉组织结构和性能的影响
Effect of Scandium Oxide on Structure and Properties of Potassium Feldspar Crystalline Glaze
摘要
Abstract
Glazes composed of potassium feldspar as main crystals hold promising potential for addressing the issues of insufficient bonding strength and high brittleness in tetragonal zirconia ceramics.The effect of scandium oxide content on structure and characteristics of potassium feldspar crystalline glazes was studied by DSC,XRD,SEM,hardness,strength,refractive index,visible light transmittance and thermal expansion tests.The results indicate that as Sc2O3 content increases from 0％(mass fraction,the same below)to 10％,the crystallization temperature of crystalline glaze decreases from 958.5℃ to 827.8℃,accompanied by an increase in crystallization capacity.Furthermore,the grain size of sintered crystalline glaze steadily enlarges.With the increase of Sc2O3 content,scandium silicate crystals precipitate within the crystalline glaze.The crystallinity,knoop hardness,bending strength and refractive index of crystalline glaze reach their optimal values at Sc2O3 content of 6.67％.The visible light transmittance decrease first and then increase,while the thermal expansion coefficient decreases.关键词
结晶釉/钾长石/氧化钪/力学性能/热膨胀Key words
crystalline glaze/potassium feldspar/Sc2O3/mechanical property/thermal expansion分类
医药卫生引用本文复制引用
杨家瑞,杜景红,黄涛,孟雪,陈家兴,秦朝乾,何胜阳..氧化钪对钾长石结晶釉组织结构和性能的影响[J].硅酸盐通报,2024,43(4):1506-1514,9.基金项目
云南省科技人才与平台计划项目(202105AD160020) （202105AD160020）
