| 스피넬계 흑색 안료를 이용한 흑색 지르코니아 세라믹스의 제조 및 특성분석 |
| 이광호, 이용석, 박주석1, 이병하2 |
부일신소재
1요업기술원 기술응용확산센터
2명지대학교 신소재공학과 |
| Preparation and Characterization of Black Zirconia Ceramics by Black Color Spinel Pigment |
| Kwang-Ho Lee, Yong-Seok Lee, Joo-Seok Park1, Byung-Ha Lee2 |
Booil Technology
1Korea Institute of Ceramic Engineering and Technology
2Department of Ceramic Engineering, Myoungji University |
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| ABSTRACT |
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The zirconia ceramics are widely used because of their excellent mechanical properties. Recently, many researches to make a colored zirconia was achieved to satisfy the individual aesthetic requirements. In this study, the synthesis of black-color spinel-based inorganic pigments which are stable above $1400^{circ}C$ and the fabrication of black-colored zirconia using the synthesized pigments are investigated. Inorganic pigments which have spinel structure and near black color were synthesized by a solid state reaction method using a $Fe_2O_3,;Cr_2O_3$, CoO and NiO powder as a starting materials at $1600^{circ}C$. Most of synthesized pigments were black colored spinel phases and single spinel phase was successfully synthesized at the composition range of $Cr_2O_3:25{sim}35%,;Fe_2O_3:45{sim}55%$, CoO:20% and NiO:$6{sim}10%$. The black-colored zirconia was fabricated at $1410^{circ}C$ with the 5 wt% synthesized pigments and their properties were evaluated. The results showed that the strength value was more than 848 MPa, absorption rate was 0.1%, the brightness of color was $L^*:40{sim}42$, the tone of color is $a^*:0.2{sim}0.8$ and $b^*:-1.1{sim}2.4$. As a result, the black-colored zirconia was suitable for a artificial jewelry or decoration zirconia goods. |
| Key words:
Zirconia, Pigment, Black color, Spinel, Ceramics |
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