| Popis: |
A study of the wear behavior of several classes of potential cage materials for aircraft gas turbine bearings was conducted, using a special wear-testing machine to approximate the projected service conditions of such bearings. It was found that: 1. Several heterogeneous alloys containing silver as a soft, low shear strength phase showed superior wear properties to presently used silicon-containing nickel-copper alloy (“S” monel) and iron-silicon bronze, even when silver-plated. The latter alloys were used as reference cage materials. 2. The hard, load-supporting phase showing the most promise was a nickel base with additives of silicon or a silicide. 3. The materials showing the best wear properties were most efficiently fabricated by powder metallurgy techniques, utilizing the infiltration method for adding the silver. Contributed by the ASLE Technical Committee on Bearings and Bearing Lubrication and presented at the Annual Meeting of the American Society of Lubrication Engineers held in Pittsburgh Pa.... |
