Method for manufacturing metal foam
AssigneeLG Chem, Ltd.
InventorsDong Woo Yoo, Jin Kyu Lee, Jong Min Shin
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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.
Claims20
A method for manufacturing a metal foam, the method comprising:
- forming a green structure using a slurry comprising a metal component comprising a conductive metal with relative magnetic permeability of 90 or more, a first solvent having a first dielectric constant of 20 or more, and a second solvent having a second dielectric constant of 15 or less;
- and
- sintering the green structure by applying an electromagnetic field to the green structure to produce a sintered product of the metal component, wherein the sintering of the green structure is only performed by induction heating,
- wherein the slurry comprises 100 to 250 parts by weight of the metal component relative to 100 parts by weight of a total weight of the first and second solvents,
- wherein the slurry comprises 1 to 6 parts by weight of the second solvent relative to 100 parts by weight of the first solvent,
- wherein the electromagnetic field is applied with a coil-type induction heater, and
- wherein the electromagnetic field is applied by applying a current in a range of 100 A to 1,000 A at a frequency in a range of 100 kHz to 1,000 kHz.
Dependencies are inferred from the claim text.