摘要
采用一步离子交换法制备离子交换钢化玻璃。研究熔盐K2CO3含量对钢化玻璃的性能影响。离子交换时间设定在20 h,离子交换温度设定为380℃,熔盐的K2CO3含量分别设定为0%、1%、2%、3%、4%。离子交换工艺完成后,对化学钢化玻璃进行电子探针测试,表面应力测试,抗折强度测试,显微硬度测试,以分析熔盐K2CO3含量的改变对化学钢化玻璃所产生的影响。数据结果显示:熔盐的K2CO3含量的变化会对化学钢化玻璃的机械性能产生较大影响。在离子交换过程中K^+的扩散系数随着K2CO3含量的增大先增大后减小,Na^+的扩散系数随着K2CO3含量的增大逐渐增大。应力层深度DOL在K2CO3含量为1%时有最大应力深度;表面应力CS在K2CO3含量为3%时有最大值。抗折强度随着K2CO3含量的增大先升高后下降,最大值在K2CO3含量为2%处;显微硬度呈现先升高后下降的趋势,最大值在K2CO3含量为3%处。将交换熔盐的K2CO3含量控制在2%至3%之间能够得到最佳的综合力学性能。
The ion exchange tempered glass was prepared by a one-step ion exchange method.The effect of the K2CO3 content of the molten salt on the performance of tempered glass was investigated.The ion exchange temperature was set at 20 h,the ion exchange temperature was set at a temperature of 380 ℃,and the K2CO3 content of the molten salt was set to 0%,1%,2%,3%,and 4%,respectively.After the completion of the ion exchange process,the chemical tempered glass is subjected to electron probe test,surface stress test,flexural strength test,and micro-hardness test to analyze the influence of the change of the molten salt K2CO3 content on the chemical tempered glass.The results show that the change of the K2CO3 content of the molten salt has a significant influence on the mechanical properties of the chemically tempered glass.In the process of ion exchange,the diffusion coefficient of K+increases first and then decreases with the increase of K2CO3 content.The diffusion coefficient of Na^+ gradually rises with the increase of K2CO3 content,and the diffusion coefficient and diffusion depth of K+and Na^+ consistent.The stress layer depth(DOL)has a minimum stress depth when the K2CO3 content is 1%;the surface stress(CS)has a maximum value when the K2CO3 content is 3%.The flexural strength ascends first and then declines with the increase of K2CO3 content,and the maximum value is 2%at K2CO3 content;the micro-hardness increases first and then decreases,with the maximum value at K2CO3 content of 3%.The optimum comprehensive mechanical properties can be obtained by controlling the K2CO3 content of the exchange molten salt between 2%and 3%.
作者
刘锡宇
何峰
陈七
张树岩
张卓恒
谢峻林
LIU Xi-yu;HE Feng;CHEN Qi;ZHANG Shu-yan;ZHANG Zhuo-heng;XIE Jun-lin(School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China;State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology,Wuhan 430070,China)
出处
《硅酸盐通报》
CAS
北大核心
2019年第7期2314-2320,共7页
Bulletin of the Chinese Ceramic Society
