Tribological and mechanical comparison of sintered and HIPped PM212 - high temperature self-lubricating composites

Journal Article · Sun Nov 01 04:00:00 EST 1992 · Lubrication Engineering; (United States)

OSTI ID:7001468

Dellacorte, C; Sliney, H E; Bogdanski, M S ^[1]

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1. NASA, Lewis Research Center, Cleveland, OH (United States) Case Western Reserve Univ., Cleveland, OH (United States)

Selected tribological, mechanical and thermophysical properties of two versions of PM212 (sintered and hot isostatically pressed, HIPped) are compared. PM212, a high temperature self-lubricating composite, contains 70 wt percent metal bonded chromium carbide, 15 wt percent CaF2/BaF2 eutectic and 15 wt percent silver. PM212 in the sintered form is about 80 percent dense and has previously been shown to have good tribological properties from room temperature to 850 C. Tribological results of a fully densified, HIPped version of PM212 are given. They are compared to sintered PM212. In addition, selected mechanical and thermophysical properties of both types of PM212 are discussed and related to the tribological similarities and differences between the two PM212 composites. In general, both composites display similar friction and wear properties. However, the fully dense PM212 HIPped composite exhibits slight lower friction and wear than sintered PM212. This may be attributed to its generally higher strength properties. The sintered version displays stable wear properties over a wide load range indicating its promise for use in a variety of applications. Based upon their properties, both the sintered and HIPped PM212 have potential as bearing and seal materials for advanced high temperature applications. 12 refs.

• OSTI ID: 7001468
• Journal Information: Lubrication Engineering; (United States), Journal Name: Lubrication Engineering; (United States) Vol. 48:11; ISSN 0024-7154; ISSN LUENAG
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360601 -- Other Materials-- Preparation & Manufacture
360603* -- Materials-- Properties
360604 -- Materials-- Corrosion
Erosion
& Degradation
CARBIDES
CARBON COMPOUNDS
CHROMIUM CARBIDES
CHROMIUM COMPOUNDS
COMPOSITE MATERIALS
ELEMENTS
EUTECTICS
FABRICATION
FRICTION
HOT PRESSING
LUBRICATION
MATERIALS
MATERIALS WORKING
MECHANICAL PROPERTIES
METALS
PHYSICAL PROPERTIES
PRESSING
SILVER
SINTERING
STABILITY
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
TRIBOLOGY
WEAR