The Role of Surface Chemistry and Profile in BOUNDARY LUBRICATION

420121

01/01/1942

Event
Pre-1964 SAE Technical Papers
Authors Abstract
Content
BOTH the geometry and the chemistry of bearing surfaces have a marked effect on performance under conditions of boundary lubrication and the salient features of these factors are discussed in this paper.
It is pointed out that at least one other quantity in addition to the root-mean-square roughness should be specified in grading surfaces for lubrication performance. The presence of loose material or “fuzz” on all commercially finished surfaces is noted.
Data are presented to show that one function of addition agents in oils is to mitigate the bad effect of poor surface finish. The affinity of lubricants for metal surfaces is discussed, and methods for experimentally measuring this property are outlined, together with results.
It is shown that a high affinity or “wettability” is a necessary but not a sufficient condition for a good boundary lubricant. Its molecules should also have the proper structure and the lubricant should contain a surface-active addition agent in adequate concentrations.
Meta TagsDetails
DOI
https://doi.org/10.4271/420121
Pages
8
Citation
BURWELL, J., "The Role of Surface Chemistry and Profile in BOUNDARY LUBRICATION," SAE Technical Paper 420121, 1942, https://doi.org/10.4271/420121.
Additional Details
Publisher
Published
Jan 1, 1942
Product Code
420121
Content Type
Technical Paper
Language
English