Accession Number : ADP007776

Title :   Surface Modification of Sodium Aluminosilicate Glasses Using Microwave Energy,

Corporate Author : FLORIDA UNIV GAINESVILLE DEPT OF MATERIALS SCIENCE AND ENGINEERING

Personal Author(s) : Fathi, Z. ; Ahmad, I. ; Simmons, J. H. ; Clark, D. E. ; Loding, A. R. ; Crow, J. E.

Report Date : 27 APR 1992

Pagination or Media Count : 7

Abstract : Microwave energy has been used in ion exchange reactions for four sodium-aluminosilicate compositions. The exchangeable cation in the glass sodium (+) was replaced at the surface by a larger atomic radii cation Potassium (+). Secondary ion mass spectroscopy (SIMS), electron microprobe analysis (EMP) and x-ray mapping were used to evaluate the effect of microwave heating on the extent and rate of ion exchange in comparison to conventional heating.

Descriptors :   *GLASS, *ION EXCHANGE, *MICROWAVES, *CERAMIC MATERIALS, ATOMIC STRUCTURE, CATIONS, COMPARISON, ELECTRONS, ENERGY, EXCHANGE REACTIONS, HEATING, IONS, MASS SPECTROSCOPY, MICROPROBES, SODIUM, SPECTROSCOPY, SURFACES, X RAYS, FAILURE(MECHANICS), BRITTLENESS, STRENGTH(MECHANICS), DIELECTRIC PROPERTIES, LOSSES, SYMPOSIA.

Subject Categories : Ceramics, Refractories and Glass
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE