Microwave assisted large scale sintering of multilayer electroceramic devices

B. Vaidhyanathan, K. Annapoorani, J. G.P. Binner, R. Raghavendra

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Citations (Scopus)

Abstract

The feasibility of employing the microwave methodology for the processing of integrated passive devices (IPDs), nanocrystalline ZnO radiais and nano multilayer varistor (MLVs) devices was explored. Methodical microwave sintering experiments were carried out using a multimode, 2.45 GHz microwave applicator. Effect of various experimental parameters such as heating rate, cooling rate, soaking time, sintering temperature etc. on the processing of these device components was investigated in detail. The resultant products were characterized for microstructure, composition and electrical performance. The various stages involved in taking the laboratory research to industrial scale-up production were also examined. The use of microwaves for the processing of MLVs was found to genuinely improve the electrical properties in both small scale (∼200 devices/ batch) and large scale (∼12000 devices/batch) sintering situations. For a stand alone microwave heating process a back-to-back cascading /conveyer belt arrangement is recommended for continuous large scale production. However hybrid heating methodology was found to provide the capability of stacking operations and could be helpful in avoiding the use of 'casketing', besides providing the possibility of achieving uniform temperature across a large volume. The technique seems to be attractive in terms of its simplicity, rapidity, economic viability and the superior product performance achieved in all the cases augers well for its general applicability.

Original languageEnglish
Title of host publicationAdvanced Processing and Manufacturing Technologies for Structural and Multifunctional Materials III - A Collection of Papers Presented at the 33rd Int. Conference on Advanced Ceramics and Composites
Pages11-17
Number of pages7
Edition8
Publication statusPublished - 2010
Externally publishedYes
EventAdvanced Processing and Manufacturing Technologies for Structural and Multifunctional Materials III - 33rd International Conference on Advanced Ceramics and Composites - Daytona Beach, FL, United States
Duration: 18 Jan 200923 Jan 2009

Publication series

NameCeramic Engineering and Science Proceedings
Number8
Volume30
ISSN (Print)0196-6219

Conference

ConferenceAdvanced Processing and Manufacturing Technologies for Structural and Multifunctional Materials III - 33rd International Conference on Advanced Ceramics and Composites
Country/TerritoryUnited States
CityDaytona Beach, FL
Period18/01/200923/01/2009

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