RT Journal Article
T1 (Bi,R)2O3 (R: Nd, Sm and Dy) oxides as potential pigments
A1 Gonzalvo, Borja
A1 Romero de Paz, Julio
A1 Fernández, Francisco
A1 Torralvo Fernández, María Josefa
AB In this work we have tackled the feasibility of the colored oxides in the Bi2O3 –R2O3 system as ecological inorganic pigments.We have prepared by solid state reaction the mixed oxides (Bi2O3)1-x(R2O3)x , R: Nd, Sm and Dy, with nominal compositions: Nd, x=0.2 and 0.5; Sm, x=0.4; and Dy, x=0.35. The obtained orange (Bi2O3)0.6 (Sm2O3)0.4 and (Bi2O3)0.65(Dy2O3)0.35 oxides present f.c.c. fluorite-type structure. (Bi2O3)0.8(Nd2O3)0.2 oxide consists of a mixture of two phases which present f.c.c. d-Bi2O3 and Bi–Sr–O-type structures in the 900–1200 ºC temperature range. In the synthesis of the oxide with nominal composition (Bi2O3)0.5(Nd2O3)0.5 we have obtained a greenish sample with higher neodymium content. This sample presents the Bi3R5O12-type structure. Diffuse reflectance data and color coordinates suggest that the (Bi2O3)0.6(Sm2O3)0.4 and (Bi2O3)0.65(Dy2O3)0.35 oxides are expected to be promising candidates as new ecological pigments.
PB Elsevier Science SA
SN 0925-8388
YR 2001
FD 2001
LK https://hdl.handle.net/20.500.14352/96208
UL https://hdl.handle.net/20.500.14352/96208
LA eng
NO Gonzalvo, B., et al. «(Bi,R)2O3 (R: Nd, Sm and Dy) Oxides as Potential Pigments». Journal of Alloys and Compounds, vol. 323-324, julio de 2001, pp. 372-75. https://doi.org/10.1016/S0925-8388(01)01056-8.
NO Comisión Interministerial de Ciencia y Tecnología (España)
DS Docta Complutense
RD 30 ago 2024