Hostile environmental conditions facing candidate alloys for the automotive Stirling engine
A materials research program is underway at NASA Lewis Research Center in support of the DOE/NASA Automotive Stirling Engine Project. The program focuses on the hot heater head of the engine including the heater head tubes, cylinders, and regenerator housings, which are considered to be the most critical components from a materials viewpoint. The specific areas of investigation in the progam involve hydrogen permeability testing, doping of the hydrogen working fluid to reduce permeability rates, oxidation/corrosion studies, creep-rupture evaluation, and assessing effects of hydrogen environment on mechanical properties. Recent results in each of the aforementioned areas of research are described. Special emphasis is placed on the materials challenges that result from the use of hydrogen as the working fluid in this potential alternative engine to today's internal combustion engines.
- Research Organization:
- National Aeronautics and Space Administration, Cleveland, OH (USA). Lewis Research Center
- DOE Contract Number:
- AI01-77CS51040
- OSTI ID:
- 6326589
- Report Number(s):
- DOE/NASA/51040-29; CONF-810913-6; ON: DE81025915
- Resource Relation:
- Conference: International conference on environmental degradation of engineering materials, Blacksburg, VA, USA, 21 Sep 1981
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
AUTOMOBILES
STIRLING ENGINES
COBALT BASE ALLOYS
MECHANICAL PROPERTIES
OXIDATION
INCONEL 718
PERMEABILITY
IRON BASE ALLOYS
NICKEL BASE ALLOYS
MATERIALS TESTING
AGING
EXPERIMENTAL DATA
HYDROGEN
ALLOYS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
COBALT ALLOYS
DATA
ELEMENTS
ENGINES
HEAT ENGINES
INCONEL ALLOYS
INFORMATION
IRON ALLOYS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NIOBIUM ALLOYS
NONMETALS
NUMERICAL DATA
TESTING
VEHICLES
330201* - External Combustion Engines- Stirling Cycle
360100 - Metals & Alloys