Replacement of environmentally hazardous corrosion protection paints on the space shuttle main engine using wire arc sprayed aluminum

Conference · Sat Dec 31 04:00:00 EST 1994

OSTI ID:160434

Daniel, R L; Sanders, H L ^[1]; Mendrek, M J ^[2]

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1. Rockwell International, Huntsville, AL (United States)
2. National Aeronautics and Space Administration, Huntsville, AL (United States)

With the advent of new environmental laws restricting hazardous 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 pitting corrosion leading to stress corrosion cracking induced by the cryogenic operating environment. Coating development, adhesion test, corrosion test, cryogenic flexibility and thermal cycle test results will be presented. Wire arc sprayed aluminum is proving to provide corrosion protection in cryogenic aerospace applications.

• OSTI ID: 160434
• Report Number(s): CONF-940684--; ISBN 0-87170-509-5
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
36 MATERIALS SCIENCE
ADHESION
ALUMINIUM
CHROMATES
CHROMIUM-NICKEL STEELS
CORROSION RESISTANCE
CRYOGENICS
ENVIRONMENTAL QUALITY
FLEXIBILITY
FUEL SYSTEMS
HYDROGEN
MECHANICAL PROPERTIES
MICROSTRUCTURE
PITTING CORROSION
PROCESS CONTROL
SPACE SHUTTLES
SPRAY COATING
THERMAL CYCLING
WIRES