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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Carmel, Y. Lloyd, I. Olorunyolemi, T. Wilson, O. Xu, G. Pert, E. Gershon, D. |
| Copyright Year | 2000 |
| Description | Author affiliation: Maryland Univ., College Park, MD, USA (Carmel, Y.) |
| Abstract | The search for advanced, high performance ceramics for microwave tubes with improved thermal and electrical properties brought about an increased interest in novel processing and characterization techniques. AlN-SiC composites are being studied as possible replacement materials for BeO and BeO-SiC composites currently used in microwave tubes. Such a replacement is needed because beryllium based powders are toxic and long term carcinogenic. Although the dielectric properties of AlN-SiC can be made to closely match the dielectric properties of BeO-SiC, the AlN based system is not yet a suitable substitute when high thermal conductivity is required. Our work is focused on (a) microwave processing of AlN and AlN-SiC composites, and (b) material characterization in order to discover the relationships that link the microstructure, constitution and processing history with the resultant material properties. Microwave-processing techniques suitable for AlN and AlN-SiC composites, as well as ultra rapid (4800 /spl deg/C/min) microwave processing, will be discussed. Dielectric, thermal and microstructure characterization techniques will be also described. |
| File Size | 430312 |
| File Format | |
| ISBN | 0780359879 |
| DOI | 10.1109/OVE:EC.2000.847522 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2000-05-02 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Ceramics Microwave theory and techniques Composite materials Dielectric materials Thermal conductivity Microstructure Powders Conducting materials Constitution History |
| Content Type | Text |
| Resource Type | Article |
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