Details

Autor(en) / Beteiligte

• 이광호
• 이용석
• 박주석
• 이병하

Titel

Preparation and Characterization of Black Zirconia Ceramics by Black Color Spinel Pigment

Ist Teil von

• 한국세라믹학회지, 2008, 45(4), , pp.214-219

Ort / Verlag

한국세라믹학회

Erscheinungsjahr

2008

Beschreibungen/Notizen

• 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 o 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 Fe2O3, Cr2O3, CoO and NiO powder as a starting materials at 1600 o C. Most of synthesized pigments were black colored spinel phases and single spinel phase was successfully synthesized at the composition range of Cr2O3:25~35%, Fe2O3:45~55%, CoO:20% and NiO:6~10%. The black-colored zirconia was fabricated at 1410 o C with the 5 wt% synthesized pigments and their properties were evaluated. The results showed that the strength value was more than 848MPa, absorption rate was 0.1%, the brightness of color was L * :40~42, the tone of color is a * :0.2~0.8 and b * :−1.1~2.4. As a result, the black-colored zirconia was suitable for a artificial jewelry or decoration zirconia goods. KCI Citation Count: 4