Microwave Joining of Ceramics,

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Abstract:

AlOOH gel was used as a bonding layer for alumina samples to be joined. Microwave radiation was used as a source of energy in a multi-mode cavity. The gel was brushed on the surfaces of the substrates to be joined and by applying pressure of 0.6-2 MPa, while heated with microwave energy, joints of different strengths were produced. The maximum strength was achieved at 1650 deg C and it was approximately 93 of the original strength. It was found that the use of AIOOH gel improves the joint quality for samples joined at relatively low temperature. Our results suggest that bonding occurred due to a diffusion process at the interface.

Author(s):
Assafi, Salwan Al ; Ahmad, Iftikhar ; Fathi, Zakarye
Author Organization(s):
FLORIDA UNIV GAINESVILLE DEPT OF MATERIALS SCIENCE AND ENGINEERING
Supplementary Note:
This article is from 'Ceramic Transactions. Volume 21. Proceedings of the Symposium on Microwave Theory and Application in Materials Processing Annual Meeting of the American Ceramic Society (23rd) Held in Cincinnati, Ohio on April 29 - May 3, 1991,' AD-A253 631, p515-521.
Pagination:
0007

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*BONDING, *MICROWAVES, *CERAMIC MATERIALS, CAVITIES, DIFFUSION, ENERGY, GELS, INTERFACES, LAYERS, LOW TEMPERATURE, PRESSURE, QUALITY, RADIATION, SUBSTRATES, SURFACES, TEMPERATURE, JOINING, THERMAL JOINING, ALUMINUM OXIDES, ELECTROMAGNETIC RADIATION, SYMPOSIA
Field(s)/Group(s):
Ceramics, Refractories and Glass, Radiofrequency Wave Propagation
Keyword(s):
Sol gel, Component Reports
Report Date:
1992 Apr 27