本文采用熔盐法对普通钠钙硅玻璃进行化学钢化,研究了离子交换时间、温度和熔盐添加剂对化学钢化玻璃抗弯强度的影响,优化出一种含铯盐的熔盐配方,并探讨了Cs+的强化机制.结果表明:在410℃进行离子交换10h后,玻璃抗弯强度为原片的4.17倍,K+扩散深度约25μm.EDS、XPS分析结果表明,Cs+占据了Na+位置,与K+→Na+交换原理基本相同;少量Cs+的加入有助于提高玻璃的抗弯强度,但过量的Cs+会对K+向深处交换产生一定的阻碍.
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