NDLI: Nasa ps400: a new temperature solid lubricant coating for high temperature wear applications

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Nasa ps400: a new temperature solid lubricant coating for high temperature wear applications

Content Provider	NASA Technical Reports Server (NTRS)
Author	Edmonds, B. J. DellaCorte, C.
Copyright Year	2009
Description	A new solid lubricant coating, NASA PS400, has been developed for high temperature tribological applications. This plasma sprayed coating is a variant of the patented PS304 coating and has been formulated to provide higher density, smoother surface finish and better dimensional stability than PS304. PS400 is comprised of a nickel-molybdenum binder that provides strength, creep resistance and extreme oxidative and dimensional stability. Chromium oxide, silver and barium-calcium fluoride eutectic are added to the binder to form PS400.Tribological properties were evaluated with a pin-on-disk test rig in sliding contact to 650 C. Coating material samples were exposed to air, argon and vacuum at 760 C followed by cross section microscopic analysis to assess microstructure stability. Oil-Free microturbine engine hot section foil bearing tests were undertaken to assess PS400 s suitability for hot foil gas bearing applications. The preliminary results indicate that PS400 exhibits tribological characteristics comparable to the PS304 coating but with enhanced creep resistance and dimensional stability suitable for demanding, dynamic applications.
File Size	4372480
Page Count	19
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20090033769
Archival Resource Key	ark:/13960/t45q9x07n
Language	English
Publisher Date	2009-08-01
Access Restriction	Open
Subject Keyword	Nonmetallic Materials Friction Solid Lubricants Wear Chromium Oxides Nickel High Temperature Calcium Fluorides Molybdenum Surface Finishing Foil Bearings Tribology Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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