Replacement of corrosion protection chromate primers and paints used in cryogenic applications on the Space Shuttle with wire arc sprayed aluminum coatings
- Rockwell International Corp., Huntsville, AL (United States)
With the advent of new environmental laws restricting volatile organic compounds and hexavalent chrome emissions, `environmentally safe` thermal spray coatings are being developed to replace the traditional corrosion protection chromate primers. A wire arc sprayed aluminum coating is being developed for corrosion protection of low pressure liquid hydrogen carrying ducts on the Space Shuttle Main Engine. Currently, this hardware utilizes a chromate primer to provide protection against corrosion pitting and stress corrosion cracking induced by the cryogenic operating environment. The wire arc sprayed aluminum coating has been found to have good potential to provide corrosion protection for flight hardware in cryogenic applications. The coating development, adhesion test, corrosion test and cryogenic flexibility test results will be presented.
- Research Organization:
- National Aeronautics and Space Administration, Huntsville, AL (United States). George C. Marshall Space Flight Center
- OSTI ID:
- 102021
- Report Number(s):
- N-95-31746; NASA-CP-3298; M-775; NAS-1.55:3298; CONF-9408174-; CNN: NAS8-40000; TRN: 9531774
- Resource Relation:
- Conference: Aerospace environmental technology conference, Huntsville, AL (United States), 10-11 Aug 1994; Other Information: PBD: Mar 1995; Related Information: Is Part Of Aerospace Environmental Technology Conference; Whitaker, A.F.; PB: [10] p.
- Country of Publication:
- United States
- Language:
- English
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