Highly Dense, Transparent-Al2O3 Ceramics From Ultrafine Nanoparticles Via a Standard SPS Sintering

Nicolas Roussel (1) , Lucile Lallemant (2) , Jean-Yves Chane-Ching (1) , Sophie Guillemet-Fristch (1) , Bernard Durand (1) , Vincent Garnier (2) , Guillaume Bonnefont (2) , Gilbert Fantozzi (2) , Lionel Bonneau (3) , Sandrine Trombert (3) , Domingo Garcia-Gutierrez (4)

1 CIRIMAT - Centre interuniversitaire de recherche et d'ingenierie des matériaux
2 MATEIS - Matériaux, ingénierie et science [Villeurbanne]
3 Baikowski (FRANCE)
4 UANL - Universidad Autonoma de Nuevo Leon [Mexique]

Using discrete, ultrafine alumina, highly dense transparent (71% real in-line transmission, RIT, =640nm) ceramics were achieved with grain size as small as 260nm using standard SPS sintering. We show that use of La3+ as a dopant greatly reduces sensitivity to the sintering temperatures. Transparent alumina were achieved in a large range of sintering temperatures, 1140 degrees C

Domaines: Matériaux

Nicolas Roussel, Lucile Lallemant, Jean-Yves Chane-Ching, Sophie Guillemet-Fristch, Bernard Durand, et al.. Highly Dense, Transparent-Al2O3 Ceramics From Ultrafine Nanoparticles Via a Standard SPS Sintering. Journal of the American Ceramic Society, 2013, 96 (4), pp.1039-1042. ⟨10.1111/jace.12255⟩. ⟨hal-01814431⟩