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US 11,493,086 B2Granted
Al-based bearing alloy and slide bearing using same
AssigneeDaido Metal Company Ltd.
InventorsKei Ishikura, Akihiro Kose, Kazuaki Toda, Eisaku Inoue
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Abstract
An Al-based bearing alloy and a slide bearing incorporating the alloy exhibit high corrosion resistance and maintain high strength for a long period of time even in a high temperature environment. The Al-based bearing alloy and slide bearing includes an Al matrix, and acicular compounds which are needle-shaped that precipitate at a plurality of sites in a structure of the Al matrix, and that have a minor diameter and a major diameter.
Claims3
An Al-based bearing alloy, comprising:
- an Al matrix, consisting of Al as a main component, two or more types of elements selected from 0.5-8.0 mass % Zn, 0.5-4.0 mass % Cu, and 1.0-10.0 mass % Si, with 0.1-0.5 mass % Mg as an additive, and
- a plurality of needle-shaped acicular compounds that precipitate in a structure of the Al matrix, the acicular compounds each having a minor diameter and a major diameter,
- wherein the minor diameter of the acicular compounds is 50 nm or less,
- wherein the major diameter of the acicular compounds is 100 nm or more,
- wherein the acicular compounds include a selected acicular compound and neighboring acicular compounds located on an imaginary straight line extending from the major diameter of the selected acicular compound,
- wherein the neighboring acicular compounds include compounds for which an angular difference is in a range of 35° to 55°, the angular difference being a difference of an angle between the imaginary straight line and the major diameter of the neighboring acicular compound, and in a setting region, the acicular compounds include 30% or more of acicular compounds for which the angular difference is in a range of 35° to 55°.
3 more elements
Dependencies are inferred from the claim text.