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Phase equilibria and processing of infrared optical ceramics on the join CaLa2S4-La2S3
William B. White,Daniel L. Chess,Catherine A. Chess,Judith A. Marks 한양대학교 세라믹연구소 2010 Journal of Ceramic Processing Research Vol.11 No.4
Processing techniques have been developed for the fabrication of optically transparent, theoretically dense CaLa2S4 – La2S3ceramics with a potential application as windows for the mid-infrared. Extreme care is needed to avoid oxygen. Best results were obtained by pre-sintering in an H2S/H2 atmosphere followed by hot-isostatic pressing. Microstructures, hardness measurements, and infrared absorption spectra serve to characterize the various processing procedures.