Estimating resistive and dielectric effects during microwave heating of Fe0.22Ni0.67Mn2.11O4
-
- AGUILAR-GARIB Juan A.
- Universidad Autónoma de Nuevo León, Facultad de Ingeniería Mecánica y Eléctrica Pedro de Alba s/n, Cd. Universitaria
-
- GARCÍA Felipe
- Universidad Autónoma de Nuevo León, Facultad de Ingeniería Mecánica y Eléctrica Pedro de Alba s/n, Cd. Universitaria
-
- VALDEZ Zarel
- Universidad Autónoma de Nuevo León, Facultad de Ingeniería Mecánica y Eléctrica Pedro de Alba s/n, Cd. Universitaria
この論文をさがす
抄録
Dielectric approaches for estimating microwave heating of ceramics and polymers assuming that resistive effects are small enough to be neglected have been applied quite often. However, these approaches are not valid for semiconductors. Permittivity and resistivity are very sensitive to chemical composition; therefore it is difficult to extrapolate properties from similar materials as can be done with thermal properties. The objective of this work is to estimate the dielectric and resistive contributions during microwave heating, solving the electromagnetic and heat transfer equations by means of Finite Element Method (FEM) using the software ANSYSTM. The experiments were performed over a parallelepiped made of compacted and sintered powders of the manganite, which is a negative thermal coefficient thermistor, placed inside a waveguide and exposed to 2.45 GHz microwaves at different powers. Temperature was taken with sheathed thermocouples that also served as electrodes for monitoring electric resistance. Matching experimental data and simulation results provided values for the properties within acceptable range. An operative model for simulating heating of a sample placed in a waveguide was built, considering either resistive or dielectric effects, which in turn helps to estimate these properties applying it jointly with the experimental technique shown.
収録刊行物
-
- Journal of the Ceramic Society of Japan
-
Journal of the Ceramic Society of Japan 117 (1367), 801-807, 2009
公益社団法人 日本セラミックス協会
- Tweet
詳細情報 詳細情報について
-
- CRID
- 1390001205284334464
-
- NII論文ID
- 10025968466
-
- NII書誌ID
- AA12229489
-
- ISSN
- 13486535
- 18820743
-
- NDL書誌ID
- 10265522
-
- 本文言語コード
- en
-
- データソース種別
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- 抄録ライセンスフラグ
- 使用不可