LiF和CaF<sub>2</sub>助熔效果的研究

LiF和CaF₂助熔效果的研究

摘要

摘要:通过抗弯强度测试研究了LiF和CaF ₂对陶瓷结合剂性能的影响.结果表明在Al-Si-O系陶瓷结合剂中,CaF ₂的析晶现象明显大于LiF.以LiF为助溶剂的陶瓷结合剂比用CaF ₂为助溶剂的陶瓷结合剂熔点低、粘接强度大.当以LiF为助熔剂时,可以用摩尔数比值（Al ₂O ₃+B ₂O ₃）/（R ₂O+RO+0.5LiF）判断陶瓷结合剂自身的强度.

Abstract:The effects of LiF and CaF ₂in the vitreous bond have been studied by the measurement of bonding strength. The results show that, the trend of CaF ₂crystallization from Al-Si-O system vitreous bond is more obvious than that of LiF. The melting-point of the bonds is lower and the bonding force is stronger when using LiF than CaF ₂as flux. The mole ratio (Al ₂O ₃+B ₂O ₃)/(R ₂O+RO+0.5LiF) can be used as a criterion to confirm the self-strength of the vitreous bonds.