Ultra low friction carbon/carbon composites for extreme temperature applications

Patent · 01 January 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
• 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

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