Method for manufacturing metal foam
AssigneeLG Chem, Ltd.
InventorsDong Woo Yoo, Jin Kyu Lee
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Abstract
The present application provides a method for manufacturing a metal foam. The present application can provide a method for manufacturing a metal foam, which is capable of forming a metal foam comprising uniformly formed pores and having excellent mechanical properties as well as the desired porosity, and a metal foam having the above characteristics. In addition, the present application can provide a method capable of forming a metal foam in which the above-mentioned physical properties are ensured, while being in the form of a thin film or sheet, within a fast process time, and such a metal foam.
Claims10
A method for manufacturing a metal foam comprising:
- sintering a green structure,
- wherein the green structure consists of a metal component and a salt, and optionally a binder and/or solvent,
- wherein the metal component comprises a conductive metal in an amount of 55% by weight or more,
- wherein the metal component is in a form of a powder, and
- wherein the sintering of the green structure consists of applying an electromagnetic field to said structure so as to generate heat from the conductive metal in the metal component,
- wherein the green structure is in a form of a film or a sheet having a thickness of 1,000 μm or less,
- wherein the conductive metal is nickel, iron or cobalt,
- wherein the conductive metal has an average particle diameter in a range of 10 μm to 100 μm,
- wherein the salt is NaCl, KCl, K2CO3, KOH, NaOH, CsCl, CaCl2, MgBr2, MgCl2, Na2SiO3, Na2CO3, NaHCO3, NH4Br or NH4Cl,
- wherein the salt has a particle diameter in a range of 30 μm to 250 μm,
- wherein the electromagnetic field is formed by applying a current at a frequency in a range of 100 kHz to 1,000 kHz, and
- wherein the green structure is formed by coating a mixture of the metal component and the salt on a substrate.
Dependencies are inferred from the claim text.