한국재료학회지 (Korean Journal of Materials Research)

  • 제32권8호
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  • Pages.354-360
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  • 2022
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  • 1225-0562(pISSN)
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  • 2287-7258(eISSN)
한국재료학회 (Materials Research Society of Korea)
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Co/Fe 황화물의 혼합안료에 의한 도자기 표면의 상형성과 색변화

Effects of Co/Fe Sulfate Pigments on the Colour and Phase of Porcelain

  • 김남훈 (강원대학교 신소재(기능소재)공학과) ;
  • 신대용 (강원대학교 산학협력단) ;
  • 김경남 (강원대학교 신소재(기능소재)공학과)
  • Kim, Nam-Heun (Department of Materials Engineering, Kangwon National University) ;
  • Shin, Dae-Yong (Industry Cooperation Foundation, Kangwon National University) ;
  • Kim, Kyung-Nam (Department of Materials Engineering, Kangwon National University)
  • 투고 : 2018.08.05
  • 심사 : 2022.08.23
  • 발행 : 2022.08.27
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초록

In this study, an Co/Fe coated porcelain using a cobalt and ferrous sulfate was sintered at 1,250 ℃. The specimens were investigated by HR-XRD, FE-SEM (EDS), Dilatometer, and UV-vis spectrophotometer. The surface of the porcelain was uniformly fused with the pigment, and white ware and celadon body specimens were densely fused to a certain thickness from the surface. Other new compounds were produced by the chemical reaction of cobalt/ferrous sulfate with the porcelain body during the sintering process. These compounds were identified as cobalt ferrite spinel phases for white ware and white mixed ware, and an andradite phase for the celadon body, and the amorphous phase, respectively. As for the color of the specimens coated with cobalt and ferrous mixed pigments, it was found that the L* value was greatly affected by the white ware, and the a* and b* values were significantly changed in the celadon body. The L* values of the specimens fired with pure white ware, celadon body, and white mix ware were 72.1, 60.92, 82.34, respectively. The C7F3 pigment coated porcelain fired at 1,250 ℃ had L* values of 39.91, 50.17, and 40.53 for the white ware, celadon body, and white mixed ware, respectively; with a* values of -1.07, -2.04, and -0.19, and at b* values of 0.46 and 6.01, it was found to be 4.03. As a new cobalt ferrite spinel phase was formed, it seemed to have had a great influence on the color change of the ceramic surface.

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