On the Influence of Stirring Conditions on the Dissolution Rate
of Chalcogenide Glasses and Films

M. D. Mikhailov^a,* and N. A. Anikina^b

^aFaculty of Materials Science and Technology, St. Petersburg State Polytechnical University,
ul. Politekhnicheskaya 29, St. Petersburg, 195251 Russia

*e-mail: mikhail@ftim.spbstu.ru

^bFaculty of Chemistry, St. Petersburg State University, Universitetskii pr. 26, Petrodvorets, St. Petersburg, 198504 Russia

Received February 16, 2010

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 pos-
sible contribution of the diffusion stages to the total rate of the interaction between the films and alkaline solu-
tions is associated with the slow desorption of reaction products from the interface. The accumulation of inter-
action 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 hydrody-
namic processes to the dissolution rate

DOI: 10.1134/S1087659611010093

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