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US 12,415,338 B2Granted
Composite material
AssigneeA.L.M.T. Corp.
InventorNaoya Matsuta
Life of this patent
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Abstract
A composite material includes: an iron-based alloy layer; an intermediate layer provided on the iron-based alloy layer; and a tungsten-containing layer provided on the intermediate layer, wherein the intermediate layer is composed of pure nickel or is an alloy that contains at least one selected from a group consisting of copper, cobalt, and iron at more than 0 mass % and less than or equal to 71 mass % in total, and that contains nickel at more than or equal to 29 mass % and less than 100 mass %.
Claims12
A composite material comprising:
- an iron-based alloy layer;
- an intermediate layer provided on the iron-based alloy layer;
- and
- a tungsten-containing layer provided directly on the intermediate layer, wherein
- a thickness of the tungsten-containing layer is more than or equal to 0.05 mm and less than 5 mm,
- a relative density of the tungsten-containing layer is more than or equal to 97%,
- the intermediate layer is composed of pure nickel,
- a content ratio of tungsten of the tungsten-containing layer is more than or equal to 70 mass %,
- a thickness of the intermediate layer is less than or equal to 50 μm;
- and
- a number of voids each having a diameter of more than or equal to 10 μm is less than or equal to 10 per cm2 between the iron-based alloy layer and the tungsten-containing layer.
8 more elements
A composite material comprising:
- an iron-based alloy layer;
- an intermediate layer provided on the iron-based alloy layer;
- and
- a tungsten-containing layer provided directly on the intermediate layer, wherein
- a thickness of the tungsten-containing layer is more than or equal to 0.05 mm and less than 5 mm,
- a relative density of the tungsten-containing layer is more than or equal to 97%,
- the intermediate layer is composed of an alloy that contains at least one selected from a group consisting of copper, cobalt, and iron at more than 0 mass % and less than or equal to 71 mass % in total, and that contains nickel at more than or equal to 29 mass % and less than 100 mass %,
- a content ratio of tungsten of the tungsten-containing layer is more than or equal to 70 mass %,
- a thickness of the intermediate layer is less than or equal to 50 μm;
- and
- a number of voids each having a diameter of more than or equal to 10 μm is less than or equal to 10 per cm2 between the iron-based alloy layer and the tungsten-containing layer.
8 more elements
Dependencies are inferred from the claim text.