The Y2BaCuO5 oxide as green pigment in ceramics

被引:20
作者
Fernandez, F [1 ]
Colon, C
Duran, A
Barajas, R
d'Ors, A
Becerril, M
Llopis, J
Paje, SE
Saez-Puche, R
Julian, I
机构
[1] EUITI UPM, Dept Ind & Polimeros Q, E-28012 Madrid, Spain
[2] Ayuntamiento Madrid, Escuela Madrilena Ceram Moncloa, E-28008 Madrid, Spain
[3] Univ Complutense Madrid, Fac Ciencias Fis, Dept Fis Mat, E-28040 Madrid, Spain
[4] Univ Complutense Madrid, Fac Ciencias Quim, Dept Quim Inorgan, E-28040 Madrid, Spain
关键词
pigments; Y2BaCuO5; green phases; ceramics;
D O I
10.1016/S0925-8388(98)00427-7
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Fine particles of green yttrium-barium-copper-oxide pigments Y2BaCuO5 have been prepared using two different synthesis methods. The process of combustion of mixed nitrates and urea needs a maximal temperature of 900 degrees C and provides samples formed by aggregates of homogeneous small particles with a size of about 0.3 mu m. However, the ceramic method requires 1050 degrees C as synthesis temperature, and yields rather higher particle sizes. Even after grinding, these samples are formed by heterogeneous particles with mean sizes of about 3 mu m. Diffuse reflectance spectra reveal that the samples obtained using the former method present a higher brilliancy, so they have been selected to be tested as green pigment in ceramics with good results. (C) 1998 Elsevier Science S.A.
引用
收藏
页码:750 / 753
页数:4
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