Effect of coloration with various metal oxides on zirconia. (February 2015)

• Record Type: Journal Article
• Authors: Chen, Jianfeng; Zhang, Yi; Dong, Shuwen; Zhao, Lisheng; Gu, Bin; Liao, Ningfang; Wen, Ning
• Is Part Of: Coloration technology. Volume 131:Number 1(2015)
• Page Start: 27
• Page End: 31
• Publication Date: 2015-02
• Subjects: Color -- Periodicals; Color in the textile industries -- Periodicals; Dyes and dyeing -- Periodicals; 667
• DOI: 10.1111/cote.12118
• Languages: English
• ISSNs: 1472-3581

Abstract

<abstract abstract-type="main" id="cote12118-abs-0001"> <title> <x xml:space="preserve">Abstract</x> </title> <p>The aim of this study was to evaluate the coloration of zirconia ceramic by adding three kinds of metal oxide. This was done with different concentrations of Fe₂O₃, CeO₂, and Bi₂O₃ in tetragonal zirconia polycrystals stabilised with 3Y‐TZP powder compacted at 200 MPa using cold isostatic pressure and full sintering. X‐ray diffraction analysis was used to examine the structure of the shaded 3Y‐TZP. The chromaticity of sintered bodies was measured on a spectrophotometer. The coloration of zirconia by the three kinds of metal oxide was determined. With the addition of CeO₂, the lightness of the zirconia was about 84–87, <italic>a</italic>* decreased slightly, and the colour shifted to a more yellow‐green hue. With an increasing content of Fe₂O₃, the chroma of the ceramic became more intense, the lightness decreased, and the colour changed to a red‐yellow hue. With an increasing concentration of Bi₂O₃, the colour of the materials shifted to a light saffron yellow. X‐ray diffraction spectra revealed only tetragonal phase. Results show that zirconia ceramic can be colourised using Fe₂O₃, CeO₂, and Bi₂O₃.</p> </abstract>