Transparent ZnS Ceramics by Sintering of High Purity Monodisperse Nanopowders

We report an efficient way of preparing transparent ZnS ceramics using the hot‐pressing technique. It has been found that the transparency is highly dependent on the purity and the grain size distribution of the starting ZnS powders. Highly pure and monodisperse ZnS powders have been obtained by pos...

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Bibliographic Details
Published inJournal of the American Ceramic Society Vol. 96; no. 10; pp. 3070 - 3074
Main Authors Chlique, Christophe, Merdrignac-Conanec, Odile, Hakmeh, Noha, Zhang, Xianghua, Adam, Jean-Luc
Format Journal Article
LanguageEnglish
Published Columbus Blackwell Publishing Ltd 01.10.2013
Wiley Subscription Services, Inc
Wiley
Subjects
Ceramic sintering
Ceramics
Chemical Sciences
Grain boundaries
Grain size
Hot pressing
Material chemistry
Microstructure
Nanocomposites
Nanomaterials
Nanostructure
Purity
Zinc sulfides
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Summary:We report an efficient way of preparing transparent ZnS ceramics using the hot‐pressing technique. It has been found that the transparency is highly dependent on the purity and the grain size distribution of the starting ZnS powders. Highly pure and monodisperse ZnS powders have been obtained by posttreatment of the precipitated powders in a H2S/N2 flow for 2 h at 600°C. The obtained ZnS ceramics show fully dense and homogeneous microstructure with average grain size of ~1 μm and smooth grain boundaries, leading to an excellent transmission of around 70% in the mid‐ and far‐ IR regions. The preparation technique described in this study is highly reproducible.
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ArticleID:JACE12570
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ISSN:0002-7820
1551-2916
DOI:10.1111/jace.12570