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The Effect of Compositional Tailoring on the Thermal Expansion and Tribological Properties of PS300: A Solid Lubricant Composite CoatingThis paper describes a research program in which the goal is to alter the thermal expansion coefficient of a composite solid lubricant coating, PS300, by compositional tailoring. PS300 is a plasma sprayed coating consisting of chrome oxide, silver and barium fluoride/calcium fluoride eutectic in NiCr binder. By adjusting the composition, the thermal expansion coefficient can be altered, and hence chosen, to more closely match a selected substrate preventing coating spallation at extreme temperatures. Thermal expansion coefficients (CTE) for a variety of compositions were measured from 25 to 800 C using a commercial dilatometer. The CTE's ranged from 7.0 to 13 x lO(exp -6)/deg C depending on the binder content. Subsequent tribological testing of a modified composition indicated that friction and wear properties were relatively insensitive to compositional tailoring.
Document ID
19970009488
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
DellaCorte, C.
(NASA Lewis Research Center Cleveland, OH United States)
Fellenstein, J. A.
(Ohio Aerospace Inst. Cleveland, OH United States)
Date Acquired
September 6, 2013
Publication Date
October 1, 1996
Subject Category
Composite Materials
Report/Patent Number
NAS 1.15:107332
NASA-TM-107332
E-10423
Accession Number
97N14974
Funding Number(s)
PROJECT: RTOP 505-63-1A
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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