Adhesion mechanism of destruction of silica-glass surface during the preparation and treatment of optical glassy arsenic Chalcogenides
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Adhesion of As–S and As–Se glasses to silica glass is studied by means of the steady detachment method. The results demonstrate that the adhesion strength of the boundary of solid phases increases with the content of chalcogens in the composition of glass. It is found that adhesion of arsenic sulfide glasses with sulfur content over 65% to silica glass exceeds the tensile strength of the silica glass during the process of solidification and annealing of chalcogenide preforms. The adhesion of arsenic chalcogenides to silica glass is determined to be the reason of chalcogenide glass contamination by heterophase inclusions.
KeywordsChalcogenide glass silica glass adhesion mechanism of contamination
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