Chapter 1. Perspectives of Field-Enhanced Processes for the Preparation of Nanomaterials

  1. Waltraud M. Kriven and
  2. Hua-Tay Lin
  1. Rolf Clasen

Published Online: 27 MAR 2008

DOI: 10.1002/9780470294802.ch1

27th Annual Cocoa Beach Conference on Advanced Ceramics and Composites: A: Ceramic Engineering and Science Proceedings, Volume 24, Issue 3

27th Annual Cocoa Beach Conference on Advanced Ceramics and Composites: A: Ceramic Engineering and Science Proceedings, Volume 24, Issue 3

How to Cite

Clasen, R. (2003) Perspectives of Field-Enhanced Processes for the Preparation of Nanomaterials, in 27th Annual Cocoa Beach Conference on Advanced Ceramics and Composites: A: Ceramic Engineering and Science Proceedings, Volume 24, Issue 3 (eds W. M. Kriven and H.-T. Lin), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294802.ch1

Author Information

  1. Department of Powder Technology Saarland University, Building 43 D-66123 Saarbücken, Germany

Publication History

  1. Published Online: 27 MAR 2008
  2. Published Print: 1 JAN 2003

ISBN Information

Print ISBN: 9780470375839

Online ISBN: 9780470294802

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Keywords:

  • electrophoretic deposition;
  • nanopowders;
  • ceramics milling;
  • electrospraying of melts;
  • nanosized glass particles

Summary

The advantages of preparing materials starting from compacts of nanosized powders like significantly reduced processing temperature are met by problems which arise in the processing of these nanopowders. Electric fields improve the performance of all process steps to the final material. Thus particle size can be controlled by means of electric fields in flame hydrolysis, which is a very favorable method for synthesizing nanopowders. Additionally, electrochemical methods and electrospraying are giving interesting perspectives. Electrophoretic deposition (EPD) is one of the most promising methods for preparing homogeneous compacts with high green density. Furthermore, all kinds of gradient materials and fiber composites can be prepared either by electrophoretic impregnation (EPI), combined electrophoretic and electrolytic deposition or by in-situ electrochemical reactions. Finally, spark sintering and alternating electric fields like microwaves can enhance sintering.