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Vacuum Plasma Spraying Replaces ElectrodepositionVacuum plasma spraying used to fabricate large parts with complicated contours and inner structures, without uninspectable welds. Reduces time, and expense of fabrication. Wall of combustion chamber built up inside of outer nickel-alloy jacket by plasma spraying. Particles of metal sprayed partially melted in plasma gun and thrown at supersonic speed toward deposition surface. Vacuum plasma-spray produces stronger bond between the grooves and covering layer completing channels and wall of combustion chamber. In tests, bond withstood pressure of 20 kpsi, three times allowable limit by old method.
Document ID
19920000484
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Holmes, Richard R.
(NASA Marshall Space Flight Center, Huntsville, AL.)
Power, Chris
(NASA Marshall Space Flight Center, Huntsville, AL.)
Burns, David H.
(NASA Marshall Space Flight Center, Huntsville, AL.)
Daniel, Ron
(NASA Marshall Space Flight Center, Huntsville, AL.)
Mckechnie, Timothy N.
(NASA Marshall Space Flight Center, Huntsville, AL.)
Date Acquired
August 15, 2013
Publication Date
August 1, 1992
Publication Information
Publication: NASA Tech Briefs
Volume: 16
Issue: 8
ISSN: 0145-319X
Subject Category
Fabrication Technology
Report/Patent Number
MFS-28569
Accession Number
92B10484
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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