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Transparent and Luminescent ZnS Ceramics Consolidated by Vacuum Hot Pressing Method
Author(s) -
Li Yiyu,
Wu Yiquan
Publication year - 2015
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.13781
Subject(s) - materials science , ceramic , wurtzite crystal structure , luminescence , hot pressing , sphalerite , zinc sulfide , sintering , transparent ceramics , transmittance , phase (matter) , metallurgy , mineralogy , zinc , composite material , chemical engineering , optoelectronics , quartz , chemistry , organic chemistry , engineering
In this study, ZnS powders with homogeneous morphology were synthesized using a colloidal processing method. Vacuum hot pressing was subsequently applied to consolidate the ZnS powders into infrared transparent ceramics (77.3% transmittance at wavelengths of 6.74 and 9.29 μm). The phase composition of the sintered ZnS suggests the presence of wurtzite as a minor phase in addition to the primary sphalerite phase, and microstructural analysis indicates that the ceramics are highly densified. It has been found that the VHP‐sintered ZnS ceramics exhibit blue (450 nm) and green (530 nm) luminescence, which is due to the formation of zinc vacancies and sulfur interstitials, respectively, during the sintering process.