NASA NTRS · 19900000168
High-Temperature Materials For Stirling Engines
Abstract
Heat-resistant piston rings and linings increase engine efficiency. Report discusses research on materials for piston rings and cylinder coatings in automotive Stirling engines. Data from tests show cobalt-based alloy, Stellite 6B, good choice for piston rings and PS200, plasma-sprayed metal-bonded chromium carbide matrix with dispersed solid lubricants, functions well as cylinder coating. Materials make it possible to place piston rings at tops of pistons ("hot" piston rings) instead of at cooler bottoms.
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Sliney, Harold E.. 1990-04-01. High-Temperature Materials For Stirling Engines. https://ntrs.nasa.gov/citations/19900000168
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