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US 8,771,839 B2Granted
Composite material
AssigneeHitachi Metals, Ltd.
InventorsKazuma Kuroki, Hiromitsu Kuroda, Tetsuya Tokumitsu
Life of this patent
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Abstract
A composite material includes a clad material including a base material that includes an iron-chromium alloy and vibration-damping layers that are provided on both surfaces of the base material and include a metal to suppress a vibration. A total thickness of the vibration-damping layers provided on the both surfaces of the base material is in a range of not less than 10% and not more than 40% relative to a total thickness of the clad material.
Claims6
A composite material, comprising:
- a clad material comprising a base material consisting essentially of a ferrite-based stainless steel not containing nickel and vibration-damping layers that are provided on both surfaces of the base material and comprise a metal to suppress a vibration,
- wherein each of the vibration-damping layers consists essentially of at least one of pure nickel, pure iron, pure magnesium, Al-78Zn, and Mg-0.6Zr,
- wherein a total thickness of the vibration-damping layers provided on the both surfaces of the base material is in a range of not less than 10% and not more than 40% relative to a total thickness of the clad material.
A composite material, comprising:
- a clad material comprising a base material that comprises an iron-chromium alloy and vibration-damping layers that are provided on both surfaces of the base material and comprise a metal to suppress a vibration,
- wherein a total thickness of the vibration-damping layers provided on the both surfaces of the base material is in a range of not less than 10% and not more than 40% relative to a total thickness of the clad material,
- wherein the clad material has a damping coefficient of not less than 4.5% at 200° C.
Dependencies are inferred from the claim text.