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Proceedings Paper

Fibrous Thiosilicates And Their Crystal Chemical Analogs: Considerations As Infrared Materials
Author(s): William B. White; George Veni; Sarah Steele; Diane S. Knight
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Paper Abstract

Materials with high toughness often have fibrous microstructures or are made as fibrous composites. One possible route to new infrared-transmitting materials is through sulfide analogs of those silicates known to have fibrous structures. SiS2 itself occurs as fibrous crystals isostructural with the rare oxide polymorph, silica-W. However, it is extremely reactive with oxygen and water. An investigation is underway of compound formation in the systems CaS-SiS2, MgS-SiS2, and NaS-Al2S3-SiS2 to search for such fibrous silicate analogs as CaSiS3 (thiowollastonite), MgSiS3 (thioenstatite), CaMgSi2S6 (thiodiopside), and NaA1Si2S6 (thiojadeite). A second phase of the investigation is to construct crystal chemical analogs with less chemical reactivity: e.g. Ge for Si, rare earths for Al, and the larger alkaline earths (Ba, Sr) for the more reactive smaller ones (Ca, Mg).

Paper Details

Date Published: 19 December 1986
PDF: 5 pages
Proc. SPIE 0683, Infrared and Optical Transmitting Materials, (19 December 1986); doi: 10.1117/12.936423
Show Author Affiliations
William B. White, The Pennsylvania State University (United States)
George Veni, The Pennsylvania State University (United States)
Sarah Steele, The Pennsylvania State University (United States)
Diane S. Knight, The Pennsylvania State University (United States)

Published in SPIE Proceedings Vol. 0683:
Infrared and Optical Transmitting Materials
Robert W. Schwartz, Editor(s)

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