The Investigation and Interpretation of the Nature of Wear Particles.
Abstract
During the sliding or rolling of one metal part against another, tiny metallic particles are produced. If the metal parts are lubricated by oil or grease the particles produced are of such a size that they are suspended in the oil in a colloidal manner. If one of the two metallic parts is composed of steel or alloys of steel, the metal particles generated during the wear process exhibit magnetic properties. The Ferrograph is an instrument which precipitates out these particles and deposits them on a transparent substrate. The particle sizes grade continuously along the substrate so that it is possible to examine individual particles in detail without interference from a random pile of other particles. The report surveys some of the findings about wearing systems and in large part is concerned with the correspondence between particle type and the class of mechanical part wearing. The report covers the processing and analysis of a number of oil samples furnished for this purpose. The report identifies the size, shape, and size distribution of adhesive, abrasive and fatigue-generated wear particles. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 20, 1973
- Accession Number
- AD0768357
Entities
People
- J. L. Middleton
- V. C. Westcott