Artigo
Translucent tin dioxide ceramics obtained by natural sintering
Registro en:
Journal Of The American Ceramic Society. Westerville: Amer Ceramic Soc, v. 80, n. 10, p. 2735-2736, 1997.
0002-7820
10.1111/j.1151-2916.1997.tb03186.x
WOS:A1997YB06000040
Autor
Gouvea, D.
Smith, A.
Smith, D. S.
Bonnet, J. P.
Varela, José Arana [UNESP]
Resumen
Dense SnO2-based ceramics (relative density >95%) have been obtained by natural sintering at a moderate temperature (less than or equal to 1300 degrees C) with the help of a small amount of manganese, Further thermal treatments above 1500 degrees C result in grain growth and transport of manganese toward the sample surface. If the ceramic is embedded inside alumina powder, the diffusion of Mn out of the sample and into alumina during such heat treatments leads to a manganese-free body (<40 ppm) which is translucent. The transmission in the visible region depends on sample thickness; 61% was achieved for a 0.05 mm thick sample. ECOLE NATL SUPER CERAM,LAB MAT CERAM & TRAITEMENTS SURFACE,F-87065 LIMOGES,FRANCE UNESP,INST QUIM,BR-14800 ARARAQUARA,SP,BRAZIL UNESP,INST QUIM,BR-14800 ARARAQUARA,SP,BRAZIL