离子交换工艺对ESP玻璃的影响

发布时间：2019-05-12 18:07

【摘要】：使用两步离子交换法制备工程应力分布玻璃(ESP玻璃)。两步离子交换中第一步交换时间较长,第二步交换时间较短。主要研究经过不同第一步离子交换工艺制度后的ESP玻璃性能上的区别。本文对ESP玻璃测试了弯曲强度,显微硬度,K+分布状态,并根据弯曲强度,K+分布状态计算得出Weibull模量以及离子扩散系数。结果表明:第二步离子交换会降低第一步离子交换玻璃的弯曲强度,而两步离子交换后的ESP玻璃其Weibull模量有所升高。显微硬度趋势与弯曲强度趋势一致。结合抗折强度以及K+分布状态,可知第一步离子交换最佳温度为450℃,时间30 h;第二步离子交换最佳温度为400℃,时间33 min。
[Abstract]:Engineering stress distribution glass (ESP glass) was prepared by two-step ion exchange method. In the two-step ion exchange, the first step exchange time is longer and the second step exchange time is shorter. The differences in the properties of ESP glasses after different first step ion exchange processes are studied. In this paper, the bending strength, microhardness and K distribution state of ESP glass are measured. According to the bending strength and K distribution state, the Weibull modulus and ion diffusion coefficient are calculated. The results show that the bending strength of the first step ion exchange glass is decreased by the second step ion exchange, while the Weibull modulus of the ESP glass after two step ion exchange is increased. The trend of microhardness is consistent with that of bending strength. Combined with the bending strength and K distribution, the optimum temperature of ion exchange in the first step is 450 鈩，

本文编号：2475592