한국재료학회지 (Korean Journal of Materials Research)

  • 제21권12호
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  • Pages.685-689
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  • 2011
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  • 1225-0562(pISSN)
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  • 2287-7258(eISSN)
한국재료학회 (Materials Research Society of Korea)
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친환경 재료를 사용한 흑색 지르코니아 세라믹스 제조

Manufacture of Black Color Zirconia Ceramics Used by Eco-Friendly Materials

  • 주인돈 (명지대학교 신소재공학과) ;
  • 이병하 (명지대학교 신소재공학과)
  • Joo, In-Don (Dept. of Materials Science & Engineering, Myongji University) ;
  • Lee, Byung-Ha (Dept. of Materials Science & Engineering, Myongji University)
  • 투고 : 2011.10.31
  • 심사 : 2011.11.23
  • 발행 : 2011.12.27
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초록

The goal of this investigation was to produce a zirconia-family black ceramics that has enhanced functionality and reliability. Color zirconia ceramics have been produced by adding pigments. Pigments cause structural defects within zirconia and result in a drop in physical properties. Using environmentally friendly rice husk, we produced a black zirconia that is free of structural defects. In optimal firing conditions for black zirconia the calcining temperatures of the molding product are changed from $400^{\circ}C$ to $1200^{\circ}C$, and the firing temperatures are changed from $1400^{\circ}C$ to $1600^{\circ}C$. Color of testing the specimens was analyzed using Ultraviolet (UV) spectroscopy. Scanning Electron Microscope (SEM), EDAX (EDX), and Fourier transform infrared spectroscopy (FT-IR) analyses were carried out in order to examine impregnation properties and crystal phases. Universial Test Machine (UTM) was used to measure the flexual strength as well as the compressive strength. From experimental results, it was found that in optimal firing conditions the sample was calcined from $1000^{\circ}C$ to $1500^{\circ}C$. Commission internationalde I'Edairage (CIE) values of manufactured black zirconia color were $L^*$ = 29.73, $a^*$ = 0.23, $b^*$ = -2.68. The bending strength was 918 MPa and the compressive strength was 2676 MPa. These strength values are similar to typical strength values of zirconia, which confirms that carbon impregnation did not influence physical properties.

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참고문헌

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피인용 문헌

  1. Zirconia–alumina–nanodiamond composites with gemological properties vol.16, pp.2, 2014, https://doi.org/10.1007/s11051-014-2257-x