Accession Number : ADP007765

Title :   Microwave Joining of Ceramics,

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

Personal Author(s) : Assafi, Salwan Al ; Ahmad, Iftikhar ; Fathi, Zakarye

Report Date : 27 APR 1992

Pagination or Media Count : 7

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.

Descriptors :   *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.

Subject Categories : Ceramics, Refractories and Glass
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE