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Surface Migration of Oil in Vacuum Systems
Author(s) -
Tazioukov F.,
Garifoullin F.,
Norden P.,
Ossipov P.,
Karibullina F.
Publication year - 1996
Publication title -
vakuum in forschung und praxis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.213
H-Index - 13
eISSN - 1522-2454
pISSN - 0947-076X
DOI - 10.1002/vipr.19960080210
Subject(s) - displacement (psychology) , surface (topology) , diffusion , mechanics , materials science , flow (mathematics) , ultra high vacuum , nanotechnology , thermodynamics , physics , geometry , mathematics , psychology , psychotherapist
A comprehensive investigation of the phenomenon of surface migration of oil in vacuum systems with oil diffusion pumps was made. The migration is caused by the temperature gradient along the wall. Theoretical calculations were performed which are based on the film flow approximation taking the conditions at the moving contact line into account. In order to prove the theoretical results, experiments with different vacuum working fluids on metallic surfaces, often used in vacuum technology, were carried out. The results obtained provide a better understanding of the surface migration process and allow to control oil film displacement.