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Hot-press sintering and the properties of lanthanum-rich calcium lanthanum sulfide ceramic

Published online by Cambridge University Press:  03 March 2011

Ming Shyong Tsai  and
Min Hsiung Hon
Ming Shyong Tsai
Affiliation:
Department of Materials Science and Engineering (Mat 32), National Cheng Kung University, Tainan, Taiwan, Republic of China
Min Hsiung Hon
Affiliation:
Department of Materials Science and Engineering (Mat 32), National Cheng Kung University, Tainan, Taiwan, Republic of China
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Abstract

The lanthanum-rich calcium lanthanum sulfide (CLS) was formed by a carbonate coprecipitating method followed by sulfurizing in a CS2 atmosphere at 950 °C for 3 h sulfurization. This powder then was densified by hot-press sintering at the temperature range from 1050 to 1150 °C for 0.5-2 h. The sintered pellets were resulfurized in a CS2 atmosphere at 950 °C for 1 h to restore the sulfur loss. The pellet sintered at 1050 °C for 0.5 h with 1.3 mm thickness had about 46% transmission at 13 μm.

Type
Articles
Information
Journal of Materials Research , Volume 9 , Issue 11 , November 1994 , pp. 2939 - 2943
Copyright
Copyright © Materials Research Society 1994

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