Bearing assembly and the like for use in corrosive and non-corrosive atmospheres

Patent · 01 January 1979

OSTI ID:863399

Mashburn, Douglas N ^[1]; Woodall, Harold C ^[2]; Wright, Ralph R ^[3]

---

1. Knoxville, TN
2. Kingston, TN
3. Oak Ridge, TN

This invention relates to a novel machine element characterized by mutually rubbing surfaces which are composed of dissimilar materials having high hardness, a low coefficient of friction, and resistance to corrosion by halogen-containing atmospheres. As exemplified by the preferred embodiment for use in gaseous UF.sub.6, the rubbing surfaces are chemically deposited nickel and anodized aluminum. These surfaces permit jam-free operation despite long-term exposure to UF.sub.6. Preferably, both surfaces have a hardness of at least about 500 HV.sub.100 on the Vickers hardness scale, and preferably the anodized-aluminum surface is of a type having comparatively little tendency to sorb uranium hexafluoride.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
• DOE Contract Number: W-7405-ENG-26
• Assignee: United States of America as repesented by United States (Washington, DC)
• Patent Number(s): US 4162813
• OSTI ID: 863399
• Country of Publication: United States
• Language: English

Related Subjects

/384/
100
500
aluminum
anodized
anodized-aluminum
assembly
atmospheres
bearing
bearing assembly
characterized
chemically
chemically deposited
coefficient
comparatively
composed
containing atmosphere
corrosion
corrosive
deposited
deposited nickel
despite
dissimilar
dissimilar materials
element
embodiment
exemplified
exposure
friction
gaseous
halogen-containing
hardness
hexafluoride
hv
jam-free
long-term
long-term exposure
machine
materials
mutually
nickel
non-corrosive
novel
operation
permit
preferably
preferred
preferred embodiment
relates
resistance
rubbing
scale
similar material
similar materials
sorb
surface
surfaces
tendency
type
uranium
uranium hexafluoride
vickers