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Hot-pressing of zinc sulfide infrared transparent ceramics from nanopowders synthesized by the solvothermal method.
- Source :
-
Ceramics International . Jan2018, Vol. 44 Issue 1, p747-752. 6p. - Publication Year :
- 2018
-
Abstract
- Hot-pressing of infrared transparent ZnS ceramics from nanopowders calls for proper particle size of the raw nanopowders to avoid the size-induced low-temperature sphalerite-to-wurtzite phase transition during calcination and sintering. In this paper, ZnS precipitate was solvothermally treated at 180 °C for 10–50 h. After solvothermal treatment, the particle size increased from 4 nm of the as-prepared precipitate to more than 10 nm, which results in better sphalerite phase stability. Even after calcination at 800 °C for 2 h, the major phase of the solvethermally synthesized powders kept as sphalerite phase. Due to the optically isotropic sphalerite phase, as well as the less organic impurities, the hot-pressed ceramic showed much better optical quality than that from the precipitated powders. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02728842
- Volume :
- 44
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Ceramics International
- Publication Type :
- Academic Journal
- Accession number :
- 126042829
- Full Text :
- https://doi.org/10.1016/j.ceramint.2017.09.242