Thermal Contact Conductance Of A Phase-mixed Coating Layer By Transitional Buffering Interface
Abstract
The thermal contact conductances of metallic joints having phase-mixed coating layers applied by a novel transitional buffering interface technique was investigated. This study is restricted to relatively low contact pressure and to microhardness (P/H) ratios, 10-4 < P/H < 6 x 10-4, where very little data exist. These results are extremely useful for some applications such as electrical contacts in spacecraft. The purposes of this work were 1) to conduct an experimental study to examine four different coating materials, two pure materials, and two phase-mixed materials; and 2) to develop a theoretical model for a phase-mixed coating layer to predict the thermal contact conductance under the first-load cycle. The theoretical model included both the thermal and mechanical (microhardness) aspects of the contact problem. An extensive experimental program was carried out employing four different coating materials, as well as a broad range of surface roughness and microhardness. In order to obtain more robust coatings than conventional methods with better endurance, an adhesion test was conducted to investigate the adhesive strength of transitional buffering interface (TBI) coating layers. © 1991 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.
Recommended Citation
K. C. Chung et al., "Thermal Contact Conductance Of A Phase-mixed Coating Layer By Transitional Buffering Interface," Journal of Thermophysics and Heat Transfer, vol. 7, no. 2, pp. 326 - 333, American Institute of Aeronautics and Astronautics, Jan 1993.
The definitive version is available at https://doi.org/10.2514/3.423
Department(s)
Mechanical and Aerospace Engineering
Second Department
Materials Science and Engineering
International Standard Serial Number (ISSN)
0887-8722
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2023 American Institute of Aeronautics and Astronautics, All rights reserved.
Publication Date
01 Jan 1993