Ultra low friction carbon/carbon composites for extreme temperature applications

Patent · Mon Jan 01 00:00:00 EST 2001

OSTI ID:873824

Erdemir, Ali ^[1]; Busch, Donald E ^[2]; Fenske, George R ^[3]; Lee, Sam ^[4]; Shepherd, Gary ^[5]; Pruett, Gary J ^[6]

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1. Naperville, IL
2. Hinsdale, IL
3. Downers Grove, IL
4. Gardena, CA
5. Los Alamitos, CA
6. Cypress, CA

A carbon/carbon composite in which a carbon matrix containing a controlled amount of boron or a boron compound is reinforced with carbon fiber exhibits a low coefficient of friction, i.e., on the order of 0.04 to 0.1 at temperatures up to 600.degree. C., which is one of the lowest frictional coefficients for any type of carbonaceous material, including graphite, glassy carbon, diamond, diamond-like carbon and other forms of carbon material. The high degree of slipperiness of the carbon composite renders it particularly adapted for limiting friction and wear at elevated temperatures such as in seals, bearings, shafts, and flexible joints

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• DOE Contract Number: W-31109-ENG-38
• Assignee: Hitco Carbon Composites, Inc. (Gardena, CA); University of Chicago (Chicago, IL)
• Patent Number(s): US 6255234
• OSTI ID: 873824
• Country of Publication: United States
• Language: English

Related Subjects

ultra
friction
carbon
composites
extreme
temperature
applications
composite
matrix
containing
controlled
amount
boron
compound
reinforced
fiber
exhibits
coefficient
04
temperatures
600
degree
lowest
frictional
coefficients
type
carbonaceous
material
including
graphite
glassy
diamond
diamond-like
forms
slipperiness
renders
particularly
adapted
limiting
wear
elevated
seals
bearings
shafts
flexible
joints
temperature applications
diamond-like carbon
particularly adapted
carbon fiber
elevated temperatures
elevated temperature
carbonaceous material
glassy carbon
carbon matrix
carbon composite
carbon material
controlled amount
extreme temperature
boron compound
matrix containing
including graphite
temperature application
carbon composites
/442/428/523/