Surface strengthening of building tiles by ion exchange with adding molten salt of KOH
Surface strengthening of building tiles by ion exchange with adding molten salt of KOH
复制标题
添加KOH熔盐离子交换法表面强化建筑砖
DOI：
10.1111/ijac.14003
复制
发表时间：
2022
影响因子：
2.1
通讯作者：
Hao Dong
中科院分区：
文献类型：
--
作者：
Xu Wei;Li Kai;Li Yueming;Sun Yi;Bao Yiwang;Wan Detian;Tan Xiang;Hao Dong
采用离子交换表面强化技术提高薄型建筑砖的强度。通过分析样品的抗折强度和K+的分布，探讨了交换时间、交换温度和KOH添加剂含量对建筑砖强度的影响。结果表明，添加。在工业用kno3熔盐中加入3mol % KOH， 450℃作用5 h，最大抗弯强度为86.53 MPa，比未进行离子交换的试样提高50.3%，比未添加KOH的试样提高8.9%。离子交换后，试样横截面上的K+离子浓度随离试样表面距离的增加而降低，扩散系数随熔盐中KOH添加剂含量的变化而变化，K+离子从熔盐中的扩散系数增大。93 × 10−15 ~ 1.8 × 10 - 15m2/s。3mol % KOH。
The surface strengthening by ion exchange technology was used to improve the strength of thin building tiles. The effects of exchange time, exchange temperature, and content of KOH additive on strengthening of building tiles were investigated by analyzing the flexural strength and distribution of K+in the samples. The results showed that the addition of .3 mol% KOH to the molten salt of industrial KNO3at 450°C for 5 h resulted in a maximum flexural strength of 86.53 MPa, which was 50.3% higher than that of the sample without ion exchange and 8.9% higher than without KOH addition. After ion exchange, the concentration of K+ion in cross‐section of the sample decreased with increasing distance from the sample surface, and the diffusion coefficient changed with the change of the content of KOH additive in the molten salt, increasing the diffusion coefficient of K+ion from .93 × 10−15to 1.8 × 10–15m2/s by adding .3 mol% KOH.