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http://dx.doi.org/10.4313/JKEM.2017.30.11.722

A Study of Middle Infrared Transparent Properties of ZnS Ceramics by the Change of Micro Structure  

Park, Chang-Sun (Electronic Materials & Component Center, Korea Institute of Ceramic Engineering & Technology)
Yeo, Seo-Yeong (Electronic Materials & Component Center, Korea Institute of Ceramic Engineering & Technology)
Kwon, Tae-Hyeong (Electronic Materials & Component Center, Korea Institute of Ceramic Engineering & Technology)
Park, Woon-ik (Electronic Materials & Component Center, Korea Institute of Ceramic Engineering & Technology)
Yun, Ji-Sun (Electronic Materials & Component Center, Korea Institute of Ceramic Engineering & Technology)
Jeong, Young-Hun (Electronic Materials & Component Center, Korea Institute of Ceramic Engineering & Technology)
Hong, Youn-Woo (Electronic Materials & Component Center, Korea Institute of Ceramic Engineering & Technology)
Cho, Jeong-Ho (Electronic Materials & Component Center, Korea Institute of Ceramic Engineering & Technology)
Paik, Jong-Hoo (Electronic Materials & Component Center, Korea Institute of Ceramic Engineering & Technology)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.30, no.11, 2017 , pp. 722-727 More about this Journal
Abstract
Transparent ZnS ceramics were synthesized by hydrothermal synthesis ($180^{\circ}C$ for 70 h), and were sintered by a hot press process at $950^{\circ}C$. To confirm the optical properties of the ZnS ceramics after sintering for various sintering holding times, we performed X-ray diffraction analysis, scanning electron microscopy, and Fourier-transform-infrared spectroscopy. The ZnS nanopowders was found to be single-phase (cubic) without any hexagonal phase. However, the hexagonal phase is formed and increases in content with increasing sintering holding time. The density of the ZnS ceramics was above 99.7%, except for the unsintered one. The ZnS ceramics showed high transmittance (~70%) when sintered for more than 2 h.
Keywords
Hydrothermal synthesis; ZnS nanopowders; Hot press; Sintering;
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