Chemical Strengthening Involving Outward Diffusion Process of Na+ Ion in Iron-containing Soda-lime Silicate Glass

  • Choi, Hyun-Bin (School of Nano & Advanced Materials Engineering, Engineering Research Institute, Gyeongsang National University) ;
  • Kang, Eun-Tae (School of Nano & Advanced Materials Engineering, Engineering Research Institute, Gyeongsang National University)
  • Received : 2015.01.20
  • Accepted : 2015.02.12
  • Published : 2015.03.31


The outward diffusion of $Na^+$ ions in iron-bearing soda lime silicate glass via oxidation heat treatment before the ion exchange process is artificially induced in order to increase the amount of ions exchanged during the ion exchange process. The effect of the addition process is analyzed through measuring the bending strength, the weight change, and the inter-diffusion coefficient after the ion exchange process. The glass strength is increased when the outward diffusion of $Na^+$ ions via oxidation heat treatment before the ion exchange process is added. For the glass subjected to the additional process, the weight change and diffusion depth increase compared with the glass not subjected to the process. The interdiffusion coefficient is also slightly increased as a result of the additional process.


Ion-exchange;Chemical strengthening;Soda-lime silicate glass;Oxidation heat-treatment


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