A Comprehensive Study of the Carbon Contamination in Tellurite Glasses and Glass‐Ceramics Sintered by Spark Plasma Sintering (SPS)

• DOI: 10.1111/jace.12657
• Publication Date: 2013-12-06T11:50:38Z
• Authors: Anthony Bertrand; Julie Carreaud; Gaëlle Delaizir; Jean‐René Duclère; Maggy Colas; Julie Cornette; Marion Vandenhende; Vincent Couderc; Philippe Thomas
• Keywords: Spark Plasma Sintering; Carbon fibers; Transparent ceramics

Highly transparent tellurite glasses and glass‐ceramics based on the 85 TeO 2 –15 WO 3 composition (mol%) were produced by spark plasma sintering ( SPS ) from powders previously prepared conventional melt‐quenching technique then grinded. We report a study understanding of carbon contamination that is commonly observed this nonconventional which constitutes drawback for optical applications. First, influence particle size initial amorphous as well an additional pressureless step prior to experiments use physical diffusion barrier have been investigated reduce in glass bulks. Second, once reducing contamination, obtained varying conditions. The noncentrosymmetric γ‐ phase crystallized within bulk volume while maintaining good transparency led generation second harmonic. This approach paves way further applications domain linear nonlinear optics.