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A study on crystalline control of zinc crystal glaze for ceramics

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2023, 33(6), pp.234-243
  • DOI : 10.6111/JKCGCT.2023.33.6.234
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering
  • Received : November 21, 2023
  • Accepted : December 7, 2023
  • Published : December 31, 2023

Hyun-Soo Lee 1 Chi Youn Lee 1

1한양여자대학교

Accredited

ABSTRACT

Zinc crystals of ZnO and SiO₂ in glaze raw materials, developed according to composition and firing requirements, are preferred because of their high decorative properties. However, most zinc crystal glazes have a high firing temperature and a narrow firing temperature range, making it difficult to use them as commercial glazes in ceramics. Therefore, in this study, it was expected that the firing temperature of a typical zinc crystal glaze could be lowered to below 1270°C by using the eutectic effect through mixing frit, the main raw material used in manufacturing zinc crystal glaze. As a result,not only was the formation temperature of zinc crystals lower in the mixed frit glaze, but also the firing temperature range was widened to 1230~1270°C, making it possible to develop a glaze that produces crystals stably. The firing temperature was lowered to 1230~1250°C and the holding temperature during cooling was lowered to about 950°C, resulting in thedevelopment of an economically effective glaze. When using a combination of frit, it has been shown that the holding temperature during cooling affects the recrystallization of zinc crystals depending on the composition of the glaze, and the crystal structure can be adjusted at this time. Additionally, the amount and shape of crystals can be controlled by using a nucleating agent.

Citation status

* References for papers published after 2023 are currently being built.

This paper was written with support from the National Research Foundation of Korea.