Effects of Sulfidization and Sintering Temperatures of CaLa_2S_4 Powder on Its Optical Property
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概要
- 論文の詳細を見る
Highly sinterable submicron CaLa_2S_4 powders were prepared by sulfidizing calcium and lanthanum alkoxides at 400℃ to 1050℃ for 48 h in pure H_2S atmosphere for application in infrared transmitting window material for 8-14 μm wavelength. The CaLa_2S_4 powders had some residues of carbon and hydrogen after sulfidizing at or below 850℃. The CaLa_2S_4 powder without extrinsic absorption in the 2.5-7 μm range due to the contaimination was obtained by sulfidizing at 950℃ for 48 h. The characteristic absorption bands of sulfite and sulfate at 9.2 and 11 μm were reduced in the pellet by eliminating the oxygen content in the sulfide by sulfidizing the powder at 1050℃ for 48 h. It was shown that 1050℃ was the optimum sulfidization temperature, while 1400℃ was the optimum sintering and hot isostatic pressing (HIP) temperature to obtain a higher transmittance ceramic.
- 社団法人応用物理学会の論文
- 1992-07-15
著者
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Hon M
National Cheng Kung Univ. Tainan Twn
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Hon Min
Department Of Materials Science And Engineering National Cheng Kung University
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Wang Li
Department Of Automotive Engineering And State Key Lab Of Automotive Safety And Energy Tsinghua Univ
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Wang L
National Cheng Kung Univ. Tainan Twn
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Wang Li
Department Of Applied Physics Beijing Polytechnic University
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HON Min
Department of Materials Engineering, National Cheng Kung University
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