Abstract
Protective coatings for both titanium-aluminum (Ti-Al) alloys and for carbon-carbon (CC) composites have been synthesized and characterized for hypersonic vehicle applications. Coatings of choice must show protection against oxygen and hydrogen both under mild environments of low flows and low temperatures and under severe environments of high flows and high temperatures. Aluminum-silicate glass ceramics were chosen as coating candidates because they are materials that are stable to temperatures of 1500°C, are nonreactive to oxygen, and have minimal reactivity with respect to hot hydrogen. This paper will discuss the chemistry of the coating synthesis and application as well as the characterization of such coatings.
© 1990 Association for Materials Protection and Performance (AMPP). All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
1990
Association for Materials Protection and Performance (AMPP)
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