Method for manufacturing metal alloy foam

A method for manufacturing a metal alloy foam, comprising:

• sintering a green structure comprising a metal component,
• wherein the green structure is formed by using a slurry comprising the metal component, a dispersant and a binder,
• wherein the metal component comprises a first metal having a relative magnetic permeability of 90 or more and a conductivity at 20° C. of 8 MS/m or more and a second metal different from the first metal,
• wherein the metal component comprises 30 weight % or more of the first metal based on the total weight of the metal component,
• wherein the second metal is one or more selected from the group consisting of copper, zinc, indium, tin, silver, platinum, gold, aluminum and magnesium,
• wherein the slurry comprises 20 to 500 parts by weight of the dispersant relative to 100 parts by weight of the metal component,
• wherein the slurry comprises 30 to 200 parts by weight of the binder relative to 100 parts by weight of the metal component,
• wherein the slurry comprises 3 to 400 parts by weight of the binder relative to 100 parts by weight of the dispersant,
• wherein the dispersant is a monohydric alcohol having 1 to 20 carbon atoms selected from the group consisting of methanol, ethanol, propanol, pentanol, octanol, 2-methoxyethanol, 2-ethoxyethanol, 2-butoxyethanol, texanol, and terpineol,
• wherein the green structure is formed by coating the slurry in the form of a film or sheet having a thickness of 2,000 μm or less,
• wherein the sintering of the green structure is performed only by applying an electromagnetic field to the structure, and
• wherein the electromagnetic field is formed by applying a current in a range of 250 A to 1,000 A.