Chapter 50. Oxidation Protection for Carbon Materials by Oxifluoride Phosphate Compounds

  1. John B. Wachtman Jr.
  1. P. H. Vast

Published Online: 26 MAR 2008

DOI: 10.1002/9780470314784.ch50

Proceedings of the 19th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - B: Ceramic Engineering and Science Proceedings, Volume 16, Issue 5

Proceedings of the 19th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - B: Ceramic Engineering and Science Proceedings, Volume 16, Issue 5

How to Cite

Vast, P. H. (2008) Oxidation Protection for Carbon Materials by Oxifluoride Phosphate Compounds, in Proceedings of the 19th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - B: Ceramic Engineering and Science Proceedings, Volume 16, Issue 5 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314784.ch50

Author Information

  1. Applied Chemistry Laboratory University of Sciences and Technologies of Lille France 59 655 Villeneuve d'Ascq France

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1995

ISBN Information

Print ISBN: 9780470375389

Online ISBN: 9780470314784

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Keywords:

  • quadruple;
  • variation;
  • ability;
  • optimize;
  • abrasions

Summary

To avoid the burn off of carbon materials in temperature range 600 — 1000°C, we introduce a new antioxidation process with oxide of difluoride of phosphoryl, which permit us to obtain by liquid or gas ways a good protection of carbon in the 800 — 1000°C range. The protection is obtained without mass increase, and this protection may be retained, even after hot water treatment or sample breaking. The protection is more efficient with silicize carbon in the range 900 — 1200°C. We obtain also good results with SiC -SiC composites. The mechanism of oxidation protection may be explained by a complexing and dissolution of metal ions and formation outside of carbon materials of metal phosphates.