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Preliminary Evaluation of PS300: A New Self-Lubricating High Temperature Composite Coating for Use to 800 CThis paper introduces PS300, a plasma sprayed, self-lubricating composite coating for use in sliding contacts at temperatures to 800 C. PS300 is a metal bonded chrome oxide coating with silver and BaF2/CaF2 eutectic solid lubricant additives. PS300 is similar to PS200, a chromium carbide based coating, which is currently being investigated for a variety of tribological applications. In pin-on-disk testing up to 650 C, PS300 exhibited comparable friction and wear properties to PS200. The PS300 matrix, which is predominantly chromium oxide rather than chromium carbide, does not require diamond grinding and polishes readily with silicon carbide abrasives greatly reducing manufacturing costs compared to PS200. It is anticipated that PS300 has potential for sliding bearing and seal applications in both aerospace and general industry.
Document ID
19960009064
Document Type
Technical Memorandum (TM)
Authors
Dellacorte, C. (NASA Lewis Research Center Cleveland, OH, United States)
Edmonds, B. J. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 6, 2013
Publication Date
November 1, 1995
Subject Category
CHEMISTRY AND MATERIALS (GENERAL)
Report/Patent Number
E-9907
NASA-TM-107056
DOE/NASA/50306-8
NAS 1.15:107056
NIPS-95-06492
Funding Number(s)
PROJECT: RTOP 505-63-5A
CONTRACT_GRANT: DE-AI01-91CE-50306
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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