Glass Physics and Chemistry

, Volume 37, Issue 1, pp 21–28 | Cite as

On the influence of stirring conditions on the dissolution rate of chalcogenide glasses and films

Article

Abstract

The local dissolution rates of chalcogenide films based on arsenic sulfide have been investigated in solutions of two types, i.e., alkaline aqueous solutions and amine solutions. The contribution of diffusion and hydrodynamic components to the total dissolution rate has been studied. It has been demonstrated that the possible contribution of the diffusion stages to the total rate of the interaction between the films and alkaline solutions is associated with the slow desorption of reaction products from the interface. The accumulation of interaction products in dipentylamine solutions favors an increase in the dissolution rate of the films, whereas the reaction products in the reaction with alkalis have an inhibiting effect. The difference between the used solvents of dipentylamine can lie in the difference between their abilities to form intermediate compounds with sulfur that have different nucleophilicities.

Keywords

chalcogenide glasses dissolution rate in alkalis and amines contribution of diffusion and hydrodynamic processes to the dissolution rate 

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© Pleiades Publishing, Ltd. 2011

Authors and Affiliations

  1. 1.Faculty of Materials Science and TechnologySt. Petersburg State Polytechnical UniversitySt. PetersburgRussia
  2. 2.Faculty of ChemistrySt. Petersburg State UniversityPetrodvorets, St. PetersburgRussia

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