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Journal of Materials Science

, Volume 46, Issue 24, pp 7895–7900 | Cite as

Degradation study on ternary zinc magnesium phosphate glasses

  • S. F. Khor
  • Z. A. Talib
  • W. M. Daud
  • H. A. A. Sidek
Article

Abstract

Glasses with composition (ZnO)30(MgO)x(P2O5)70−x (x = 5, 8, 10, 13, 15, 18, and 20 mol.%) have been successfully prepared by the melt-quenching technique. Degradation study has been carried out by means of measuring their chemical durability against buffer solutions with initial pH values of 4.01, 7.00, and 10.01 at an ambient temperature for up to 30 days. The dissolution rate (DR) was obtained by calculating the measured weight loss of the glasses per unit surface area per unit immersion time. The results show that the glasses have better corrosion resistance in basic solution. It was also found that the weight loss is related to the MgO concentration with lower P2O5 concentration exhibiting greater corrosion resistance irrespective of acidic, neutral, or basic solutions as immersion liquid. All the sample surfaces and edges were corroded and the solutions experienced a decrease in pH values during the duration of the corrosion test.

Keywords

Dissolution Rate Corrosion Test Phosphate Glass Chemical Durability Phosphate Chain 

Notes

Acknowledgements

The authors gratefully acknowledge the financial support by the Malaysian government through the Ministry of Higher Education and Ministry of Science, Technology and Innovation.

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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • S. F. Khor
    • 1
  • Z. A. Talib
    • 1
  • W. M. Daud
    • 1
  • H. A. A. Sidek
    • 1
  1. 1.Department of Physics, Faculty of ScienceUniversiti Putra MalaysiaSelangorMalaysia

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