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Achieve the mechanical strength of ceramic membrane using low temperature ceramic glaze

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2018, 28(1), pp.38-43
  • DOI : 10.6111/JKCGCT.2018.28.1.038
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering
  • Received : November 13, 2017
  • Accepted : January 28, 2018
  • Published : February 28, 2018

Jong-Chan Lee 1 Kim Jinho 1 Han Kyu Sung 1 Kwangtaek Hwang 1

1한국세라믹기술원

Accredited

ABSTRACT

Ceramic membrane has been widely used for water treatment due to its advantages of eco-friendly property and low energy consumption. However, high porosity of ceramic membrane higher than 40 % may cause a problem of strength, when it is applied to a water treatment module. In order to solve this problem, the strength of the membrane edge was improved by using the ceramic glaze. Four different glaze compositions for low temperature sintering was selected to minimize the deformation of the membrane microstructure. After coating with low temperature glaze, cracks were observed due to differences in thermal expansion coefficient between the membrane and glaze. Thus, the thermal expansion coefficient of glaze was controlled by addition of cordierite and petalite. As a results, the compressive strength of the ceramic membrane, which was coated with the optimized glaze composition, was increased from 27 N/m 2 to 117 N/m 2 , indicating that the glaze coating can improve the disadvantages of the fragile ceramic membrane.

Citation status

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