한국세라믹학회지 (Journal of the Korean Ceramic Society)

  • 제53권4호
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  • Pages.450-455
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  • 2016
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  • 1229-7801(pISSN)
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  • 2234-0491(eISSN)
한국세라믹학회 (The Korean Ceramic Society)
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Color Evolution in Single Crystal Colored Cubic Zirconias With Annealing Atmosphere and Temperature

  • Song, Jeongho (Department of Materials Science and Engineering, University of Seoul) ;
  • Noh, Yunyoung (Department of Materials Science and Engineering, University of Seoul) ;
  • Song, Ohsung (Department of Materials Science and Engineering, University of Seoul)
  • 투고 : 2016.04.01
  • 심사 : 2016.05.16
  • 발행 : 2016.07.31
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초록

Color change in single-crystal, yellow, red, purple, and colorless cubic zirconias (CZs) was investigated as a function of annealing in vacuum and air atmosphere at $800-1400^{\circ}C$ for 30 min, for development of a damascene process of plugging a precious metal paste at the elevated temperature. Coloring-element contents of the CZs were evaluated using WD-XRF, and the color change determined visually by naked eye, and using a digital camera and UV-Vis-NIR color analyzer. WD-XRF showed that all of the CZs had cubic-phase stabilizer elements and coloring elements. All CZs that underwent vacuum annealing exhibited a slight color change at $<900^{\circ}C$, while their colors began to change to black at $1100^{\circ}C$, and became opaque black at $1400^{\circ}C$. After air annealing, there was almost no color change up to $1400^{\circ}C$. Since red and purple CZs showed greater color difference (CD) values than the others, the degree of CD is likely to depend on the original color of the CZ due to the different stabilities of their coloring elements during annealing. Based on our results, it is suggested that annealing in air at $<900^{\circ}C$ is advantageous, and assorted colored CZs can be used for precious metal damascene.

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참고문헌

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  1. Enhancing wicking microflows in metallic foams vol.21, pp.12, 2017, https://doi.org/10.1007/s10404-017-2018-0
  2. Color Variation in Color-shade Polycrystalline Zirconia Ceramics by the Atmosphere Controlled Firing vol.55, pp.2, 2018, https://doi.org/10.4191/kcers.2018.55.2.02