Chapter 7. Near Net–Shape Si02–TiO2–Glass Compacts with Reduced Thermal Expansion

  1. Hau-Tay Lin and
  2. Mrityunjay Singh
  1. Rolf Clasen1,
  2. Aline Licht1,
  3. Markus Hornfeck1,
  4. Monika Oswald2,
  5. Klaus Deller2,
  6. Helmut Mangold2 and
  7. Gerrit Schneider2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294758.ch7

26th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 23, Issue 4

26th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 23, Issue 4

How to Cite

Clasen, R., Licht, A., Hornfeck, M., Oswald, M., Deller, K., Mangold, H. and Schneider, G. (2002) Near Net–Shape Si02–TiO2–Glass Compacts with Reduced Thermal Expansion, in 26th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 23, Issue 4 (eds H.-T. Lin and M. Singh), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294758.ch7

Author Information

  1. 1

    Saarland University Department of Powder Technology Im Stadtwald, Building 43 D–66123 Saarbrücken, Germany

  2. 2

    Degussa. GB Kieselsauren Rodenbacher Chaussee 4 D–63457 Hanau, Germany

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2002

ISBN Information

Print ISBN: 9780470375792

Online ISBN: 9780470294758

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Keywords:

  • thermal expansion;
  • colloidal gel processing;
  • flame hydrolysis;
  • silica powders;
  • fluid titanium compound

Summary

ULE™ glasses show negligible thermal expansion in the useful temperature range. In this paper, colloidal sol-gel alternative to costly flame hydrolysis is presented. Colloidal gel processing of pure silica powders leads to greenbodies with open pores. Near net-shape SiO2–TiO2–glass production can base on this technique as it can be combined with penetration of the fluid titanium compound. After removing organic compounds by calcination, purely anorganic greenbodies can be sintered to dense glassbodies. The transparent samples show a smaller coefficient of thermal expansion (CTE) than fused silica.