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Cubic zirconia single crystal growth using shell by skull melting method

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2013, 23(3), pp.124~128
  • DOI : 10.6111/JKCGCT.2013.23.3.124
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering

정진화 1,  YON SEOG JOO 1,  Jeongwon Seok 1

1동신대학교

Accredited

ABSTRACT

In this research, cubic zirconia is synthesized with a refined CaO from shells as a stabilizer through Skull melting method. The proper process time and concentration are defined by Hydration reaction to produce the refined CaO after two different treatments using 0.1 mol% of HCl respectively with Cockle shell. The highest purity of CaO is reached when the shell is immersed in 1 mol% HCl. In Hydration reaction step, the pure Ca(OH)2 is produced at 45oC for 24 hours. The highest purity of CaO is measured when the Ca(OH)2 is treated by heat at 1200oC for 5 hours. The single crystals are grown through Skull melting method by adding the different contents of the refined CaO from 10 mol% to 30 mol% into ZrO2. The frequency of High-frequency oscillator used for Skull melting method is 3.4 MHz. The descending speed of the single crystal is 3 mm/hour. The grown length of the single crystal is 4 cm. As a result of this study, 15 mol% of CaO has the best crystallinity

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