FORMULATION FOR PREPARING POWDERED SELF-LUBRICATING ANTIFRICTION COPPER-BASED MATERIAL

摘要

FIELD: antifriction materials. SUBSTANCE: invention can be used for manufacturing self-lubricating slider bearings operated under spare lubrication or lubricationless conditions, at elevated temperatures and humidity within a wide range of slide velocities and specific loadings, in particular in friction assemblies of electromotors in electronic industry, household appliances, etc. Formulation contains, wt %: graphite 1-2, tin 4-6, calcium fluoride 0.6-1, molybdenum disulfide 0.5-1.6, special-type metallide 3-5, boron 0.05-0.08, copper - the balance. Formulation is molded into parts involving powder metallurgy technique. Caked material has a porous structure of alpha-solid solution of tin, boron, and nickel in copper with included metallides (Ni₃SU, NiSU, NiTi₂) and solid greases (CaF₂, MoS₂, and graphite). EFFECT: improved antifriction and physico- chemical characteristics. 2 tbl