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CALCIUM INFLUENCE ON DISSOLUTION RATES OF POTASSIUM PHOSPHATE GLASSES

D. Cacaina1,* , S. Simon1

Affiliation

  1. Babes-Bolyai University, Faculty of Physics, 3400 Cluj-Napoca, Romania

Abstract

The dissolution behaviour of xCaO·(90-x)P2O5·10K2O glasses with 0 £ x £ 35% mol% in decationized water, physiological serum and chlorine acid, considered as simulated biological media was investigated at room temperature, in static regime. The dissolution behaviour of the samples depends on the hydrogen concentration in solutions and on glass composition and local structure. The lowest release rate is observed for the potassium-phosphate matrix (x = 0) in decationized water. One also remarks that the dissolution rate is higher in the first four hours, then decreases up to seven hours and is again intensified in the corrosion stage from 7 to 24 hours..

Keywords

Phosphate glasses, Dissolution stability, Cations release.

Submitted at: June 29, 2002
Accepted at: March 12, 2003

Citation

D. Cacaina, S. Simon, CALCIUM INFLUENCE ON DISSOLUTION RATES OF POTASSIUM PHOSPHATE GLASSES, Journal of Optoelectronics and Advanced Materials Vol. 5, Iss. 1, pp. 191-194 (2003)