US 11,951,544 B2
Method for manufacturing metal alloy foam
So Jin Kim, Daejeon (KR); Dong Woo Yoo, Daejeon (KR); and Jin Kyu Lee, Daejeon (KR)
Assigned to LG Chem, LTD., Seoul (KR)
Appl. No. 16/332,603
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Oct. 12, 2017, PCT No. PCT/KR2017/011233
§ 371(c)(1), (2) Date Mar. 12, 2019,
PCT Pub. No. WO2018/070795, PCT Pub. Date Apr. 19, 2018.
Claims priority of application No. 10-2016-0133353 (KR), filed on Oct. 14, 2016.
Prior Publication US 2021/0276090 A1, Sep. 9, 2021
Int. Cl. B22F 3/11 (2006.01); B22F 3/105 (2006.01); C22C 1/08 (2006.01)
CPC B22F 3/11 (2013.01) [B22F 3/105 (2013.01); C22C 1/08 (2013.01); B22F 2003/1053 (2013.01); B22F 2998/10 (2013.01)] 16 Claims
OG exemplary drawing
 
1. 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.