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			Foil bearings require a solid lubricant coating to provide stop/start wear protection for long-life durability. PS304 is a NASA-developed high-temperature solid lubricant coating tailored for foil bearings that operates from a cold start to 1500 °F without vaporization or emissions. PS304 has successfully lubricated foil bearings at high loads for 100,000 start/stop cycles from 200 to 1200 °F.   Above: Plasma spray applied to oil-free bearing journal   Powder metallurgy compaction of PS304 feed stock material can produce self-lubricating solid components. Collaboration with industry has led to successful commercialization of this material as PM304.   Above: Commercially available PM304 bushings   Read more about this NASA Success Story... + Return to the branch research page... Dr. Christopher DellaCorte View a list of published NASA reports + View related publications Learn more about our Oil-Free Turbomachinery Facilities + View Facility Listing Analytical Modeling + Learn more Foil Bearings + Learn more Technology Overview + Learn more
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