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Coating Silicon-Based Ceramics With Durable MulliteImproved plasma-spraying process deposits mullite on silicon carbide substrates. Prevents formation of amorphous mullite by maintaining high temperature of sprayed deposite to allow crystallization to occur. Deposited mullite adheres to substrate and exhibits little or no cracking during thermal cycling. Provides substantially greater resistance to oxidation in dry air and corrosion by molten salt. Process expected useful in depositing mullite on substrates made of other silicon-based ceramics and other ceramic substrates having coefficients of thermal expansion similar to those of mullite.
Document ID
19960017855
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Miller, Robert A.
(NASA Lewis Research Center, Cleveland, OH.)
Jacobson, Nathan S.
(NASA Lewis Research Center, Cleveland, OH.)
Lee, Kang N.
(Cleveland State Univ.)
Date Acquired
August 17, 2013
Publication Date
February 1, 1996
Publication Information
Publication: NASA Tech Briefs
Volume: 20
Issue: 2
ISSN: 0145-319X
Subject Category
Materials
Report/Patent Number
LEW-15561
Accession Number
96B10065
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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