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- Title
Absorption of microwaves in metal-ceramic powder materials.
- Authors
Egorov, S.; Eremeev, A.; Plotnikov, I.; Rybakov, K.; Kholoptsev, V.; Bykov, Yu.
- Abstract
Sintering of metal-ceramic composites by microwave heating is a promising method for creation of functionally graded materials. In this paper, we study the absorption of microwaves in compacted mixtures of metal and dielectric powders. The coefficient of microwave absorption is calculated within the framework of the effective-medium approximation as a function of the mass fraction, dimensions, and temperature of metal particles. The experimental method for determination of the microwave absorption coefficient is proposed, which is based on measuring the temperature of the samples during their heating by microwaves in an oversized working chamber. The coefficients of microwave absorption in powder composites AlO-Ni, which were measured by the proposed method, are presented. An agreement between the theoretical and experimental results is demonstrated.
- Subjects
MICROWAVES; ABSORPTION; CERAMIC materials; METAL powders; COMPOSITE materials; FUNCTIONALLY gradient materials; TEMPERATURE effect
- Publication
Radiophysics & Quantum Electronics, 2010, Vol 53, Issue 5/6, p354
- ISSN
0033-8443
- Publication type
Article
- DOI
10.1007/s11141-010-9234-8