Accession Number:

ADP007776

Title:

Surface Modification of Sodium Aluminosilicate Glasses Using Microwave Energy

Descriptive Note:

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:

1992-04-27

Pagination or Media Count:

8.0

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:

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

Subject Categories:

• Ceramics, Refractories and Glass
• Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE