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AssigneeGeneral Electric Company
InventorsDavid E. Budinger, Ronald L. Galley, Roger D. Wustman, Jonathan P. Clarke
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A tip cap hole is loaded with a first composition comprising particles of a first alloy having a solidus temperature above the brazing temperature. The first composition is covered with a second composition comprising particles of a second alloy having a liquidus temperature below the brazing temperature. The second composition is heated to the brazing temperature to cause particles of the second alloy to melt to form a liquid of the second alloy which is carried into spaces between the particles of the first alloy by capillarity. The liquid of the second alloy is cooled to form a solid securely bonding the particles of the first alloy. By weight, the second alloy has no more than 1% B and from 3% to 11% Si. The first alloy has Cr and at least about 5% Al, at least about 0.5% Hf, no more than 0.5% Ti.
A metal fill material in a tip cap hole in a high pressure turbine blade, the fill material comprising a first alloy component and a second alloy component, the first alloy component forming a first fill material layer consisting substantially entirely of said first alloy component and the second alloy component forming a second fill material layer distinct from said first fill material layer, said second fill material layer consisting at least about 50% by weight of said second alloy component, the first alloy component having a solidus temperature which is relatively higher than a liquidus temperature of said second alloy component, the second alloy component comprising from about 3% to about 11% Si by weight.
A metal fill material in a tip cap hole in a high pressure turbine blade, the fill material comprising a first alloy component and a second alloy component, the first alloy component forming a first fill material layer consisting substantially entirely of said first alloy component and the second alloy component forming a second fill material layer distinct from said first fill material layer, said second fill material layer consisting at least about 50% by weight of said second alloy component, the first alloy component having a solidus temperature which is relatively higher than a liquidus temperature of said second alloy component, the second alloy component comprising no more than about 1% B by weight.
A Ni-based metal fill material in a tip cap hole in a high pressure turbine blade, the fill material comprising a first Ni-based alloy component and a second Ni-based alloy component, the first Ni-based alloy component forming a first fill material layer consisting substantially entirely of said first Ni-based alloy component and the second Ni-based alloy component forming a second fill material layer distinct from said first fill material layer, said second fill material layer consisting at least about 50% by weight of said second Ni-based alloy component, the first Ni-based alloy component having a solidus temperature which is relatively higher than a liquidus temperature of said second Ni-based alloy component, the first Ni-based alloy component comprising from about 5% to about 7% Al by weight, from about 1% to about 3% Hf by weight, from about 2% to about 4% Re by weight, no more than about 0.5% Ti by weight, and Cr, and the second Ni-based alloy component comprising from about 3% to about 11% Si by weight, no more than about 1% B by weight, and Cr.
A Ni-based metal fill material in a tip cap hole in a high pressure turbine blade, the fill material comprising a first Ni-based alloy component and a second Ni-based alloy component, the first Ni-based alloy component having a solidus temperature which is relatively higher than a liquidus temperature of said second Ni-based alloy component, the first Ni-based alloy component comprising from about 5% to about 7% Al by weight, from about 1% to about 3% Hf by weight, from about 2% to about 4% Re by weight, no more than 0.5% Ti by weight, and Cr, the first Ni-based alloy component forming a first fill material layer consisting substantially entirely of said first Ni-based alloy component and the second Ni-based alloy component forming a second fill material layer distinct from said first fill material layer, said second fill material layer consisting at least about 50% by weight of said second Ni-based alloy component, wherein the second Ni-based alloy component is selected from the group of alloys consisting of A and B as follows, be weight %:
Dependencies are inferred from the claim text.