Yb:YAG Transparent Ceramics by Double‐Step Sintering—A Comparison Between HIP and FAST Postsintering Treatments
Abstract
The potential of the field‐assisted sintering technique (FAST) as a novel postdensification method for densifying pre‐sintered transparent Yb‐doped yttrium aluminum garnet (Yb:YAG) ceramics was evaluated. Specifically, the unconventional FAST method was compared with hot isostatic pressing. Achieving transparency in a ceramic requires a precise process control to attain a fully pore‐ and defect‐free microstructure. Conventionally, YAG‐based transparent ceramics are prepared through double‐step sintering, such as vacuum sintering followed by HIP. In this work, various combinations of pressure and temperature were explored using the FAST process as an alternative to HIP. The resulting microstructures were analyzed and compared. Carbon contamination was observed in samples processed by FAST. Transmittance after the FAST and HIP treatments, and after air annealing treatments was compared. The findings indicate that FAST effectively reduces residual porosity, yielding transparent materials, and can serve as a viable alternative to HIP.
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BibTeX
@article{picelli2026ybyag,
title = {{Yb:YAG Transparent Ceramics by Double‐Step Sintering—A Comparison Between HIP and FAST Postsintering Treatments}},
author = {Francesco Picelli and Rémy Boulesteix and Alexandre Maître and Marion Vandenhende and Jan Hostaša and Laura Esposito},
journal = {Journal of the American Ceramic Society},
year = {2026},
month = jul,
doi = {10.1111/jace.70963},
url = {https://unilim.hal.science/hal-05797831v1},
note = {CC BY},
}
RIS
TY - JOUR
TI - Yb:YAG Transparent Ceramics by Double‐Step Sintering—A Comparison Between HIP and FAST Postsintering Treatments
AU - Francesco Picelli
AU - Rémy Boulesteix
AU - Alexandre Maître
AU - Marion Vandenhende
AU - Jan Hostaša
AU - Laura Esposito
PY - 2026
DA - 2026/07/02
JO - Journal of the American Ceramic Society
DO - 10.1111/jace.70963
UR - https://unilim.hal.science/hal-05797831v1
AB - The potential of the field‐assisted sintering technique (FAST) as a novel postdensification method for densifying pre‐sintered transparent Yb‐doped yttrium aluminum garnet (Yb:YAG) ceramics was evaluated. Specifically, the unconventional FAST method was compared with hot isostatic pressing. Achieving transparency in a ceramic requires a precise process control to attain a fully pore‐ and defect‐free microstructure. Conventionally, YAG‐based transparent ceramics are prepared through double‐step sintering, such as vacuum sintering followed by HIP. In this work, various combinations of pressure and temperature were explored using the FAST process as an alternative to HIP. The resulting microstructures were analyzed and compared. Carbon contamination was observed in samples processed by FAST. Transmittance after the FAST and HIP treatments, and after air annealing treatments was compared. The findings indicate that FAST effectively reduces residual porosity, yielding transparent materials, and can serve as a viable alternative to HIP.
SN - 0002-7820
SN - 1551-2916
ER -