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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