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Influences of Hot-Pressing Conditions on the Optical Properties of Lanthanum Sulfide Ceramics

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The Ca-doped -La2S3 (-La2S3:Ca) powders with various La/Ca ratios were prepared using the coprecipitation method. The -La2S3:Ca powders with a ratio of La/Ca=5 was selected for sintering in order to study the effects of hot-pressing temperature and time on the microstructure and optical properties of -La2S3:Ca ceramics. The results showed that 1100°C for 1 h were the optimum hot-press parameters, at which the maximum transmittance of -La2S3:Ca ceramics up to 40% at 13 m was obtained.

Document Type: Research Article


Affiliations: School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China

Publication date: 2011-04-01

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