Braze tape with central region with low and high melting temperature alloy material, and related method

A braze tape comprising:

• a first low melting temperature alloy material portion consisting only of a low melting temperature alloy material;
• a second high melting temperature alloy material portion consisting only of a high melting temperature alloy material;
• a central portion located between and adjacent to the first low melting temperature alloy material portion and the second high melting temperature alloy material portion, and wherein the central portion includes a mixture of the low melting temperature alloy material and the high melting temperature alloy material, wherein a percentage of the low melting temperature alloy material to the high melting temperature alloy material changes according to a gradient along a thickness of the central portion;
• and
• a side portion contiguous with the second portion and including the high melting temperature alloy material, the side portion extending along an end of the central portion and an end of the first portion.

A method of repairing a component, the method comprising:

• placing a braze tape on a substrate of the component, the braze tape having a first portion, a second portion, and a central portion located between the first portion and the second portion, the first portion is placed in contact with the substrate;
• and
• brazing the braze tape to the substrate,
• wherein:
• the first portion includes a low melting temperature alloy material,
• the second portion includes a high melting temperature alloy material, and
• the central portion includes a mixture of the low melting temperature alloy material and the high melting temperature alloy material, wherein a percentage of the low melting temperature alloy material to the high melting temperature alloy material changes according to a gradient along a thickness of the central portion;
• wherein the brazing heats the braze tape to a temperature less than a melting temperature point of the high melting temperature alloy material, and
• a porosity of the braze tape is higher in the first portion than in the second portion.