NDLI: Oxidation of silicon nitride under standard air or microwave-excited air at high temperature and low pressure

Content Provider	Springer Nature Link
Copyright Year	1997
Abstract	During the atmospheric re-entry of space shuttles, the thermal constraints due to the hypersonic velocity can lead to very extensive damage on materials of the protective heat shield (oxidation, thermal shock, etc.). In order to test the oxidation resistance of such materials, we have realized an experimental set-up called MESOX which associates a concentrated radiation solar furnace and a microwave generator. The maximal heat flux is 4.5 MW m-2, and the temperature ranges up to 2500 K. The total pressure is in the range 102–104 Pa. For silicon-based ceramics, it is necessary to have a good knowledge of the conditions for the existence of a protective silica layer. The determination of the transition between passive and active oxidation is done, in the case of sintered silicon nitride, under standard and microwave-excited air.
Starting Page	1187
Ending Page	1193
Page Count	7
File Format	PDF
ISSN	00222461
Journal	Journal of Materials Science
Volume Number	32
Issue Number	5
e-ISSN	15734803
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	1997-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Polymer Sciences Materials Science Characterization and Evaluation Materials Mechanics Crystallography Continuum Mechanics and Mechanics of Materials
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Mechanics of Materials Mechanical Engineering Polymers and Plastics

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Oxidation of silicon nitride under standard air or microwave-excited air at high temperature and low pressure