Synthesis of the Ceramic Pigment Victoria Green (Ca3Cr2Si3O12) from CaCO3, Cr2O3 and SiO2

Química Nova

Della, Viviana Possamai¹  Universidade Federal de Santa Catarina, Florianópolis, Brasil¹  Rambo, Carlos Renato¹  Junkes, Janaina Accordi¹  Hotza, Dachamir¹ 

关键词: ceramic pigment;    uvarovite;    silica.;   

DOI  :  10.1590/S0100-40422008000500011

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

The synthesis of the ceramic pigment Victoria Green (Ca3Cr2Si3O12 ) is described. As raw materials CaCO3, Cr2O3, and SiO2 obtained from rice husk were used. Borax was used as mineralizer. Raw materials were formulated stoichiometrically and calcined from 1000 to 1200 ºC for 180 min. The main phase detected was uvarovite with particle size below 45 mm. The pigments were applied on ceramic tiles and sintered at 1150 ºC for 40 min. The synthesis process showed to be adequate to produce the green pigment, whose characteristics resemble those of a commercial pigment.

【 授权许可】

Unknown