Solid Lubricants for Improved Wear Resistance.
Abstract
Detailed studies including synthesis, characterization and evaluation of antimony thioantimonate, SbSbS4, were carried out. As a solid lubricant additive in various greases, this material exhibited superior extreme pressure and antiwear properties as demonstrated by the Four-Ball weld points and load-wear indexes on both AISI-52100 and AISI-440C steels. Moreover, impressive abrasive wear resistance properties were imparted by low concentrations of SbSbS4 in greases deliberately contaminated with hard abrasive particles. This additive appeared to be compatible with all the base greases investigated including a silicone grease in which very few additives show good response. The lubricant properties of a number of cerium and zinc thio- and oxythiomolybdates were also investigated. The cerium complexes, as additives in a lithium grease, showed excellent antiwear properties on both chrome tool and stainless steel. However, their non-stiochiometric composition and tendency to form hydrates caused complications during synthesis and evaluation of properties. The zinc complexes were found to be even more promising as antiwear additives, especially for high temperature use on stainless steel. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1982
- Accession Number
- ADA120092
Entities
People
- James P. King
- Yayesh Asmerom