US 11,931,821 B2
Magnesium clad material, electronic device housing, and mobile object component
Satoshi Okura, Osaka (JP); and Ryoji Inoue, Osaka (JP)
Assigned to PROTERIAL, LTD., Tokyo (JP)
Appl. No. 17/438,547
Filed by PROTERIAL, LTD., Tokyo (JP)
PCT Filed Mar. 6, 2020, PCT No. PCT/JP2020/009874
§ 371(c)(1), (2) Date Sep. 13, 2021,
PCT Pub. No. WO2020/184489, PCT Pub. Date Sep. 17, 2020.
Claims priority of application No. 2019-046916 (JP), filed on Mar. 14, 2019.
Prior Publication US 2022/0143742 A1, May 12, 2022
Int. Cl. B23K 20/00 (2006.01); B23K 20/04 (2006.01); B23K 20/16 (2006.01); B23K 20/233 (2006.01); B23K 101/36 (2006.01); B23K 103/08 (2006.01); B23K 103/10 (2006.01); B23K 103/12 (2006.01); B23K 103/18 (2006.01)
CPC B23K 20/2333 (2013.01) [B23K 20/04 (2013.01); B23K 20/16 (2013.01); B23K 2101/36 (2018.08); B23K 2103/10 (2018.08); B23K 2103/12 (2018.08); B23K 2103/15 (2018.08); B23K 2103/18 (2018.08)] 12 Claims
OG exemplary drawing
 
1. A magnesium clad material comprising when a cross-section thereof cut in a thickness direction thereof is observed:
a Mg layer made of a Mg—Li alloy and serving as a base layer;
a first Al layer made of pure Al or an Al alloy; and
a first joint made of pure Cu or a Cu alloy and arranged between the Mg layer and the first Al layer; wherein
the magnesium clad material has a 0.2% proof stress of 150 MPa or more as measured in a tensile test under a room temperature atmosphere; and
the Mg—Li alloy comprises LAZ921, LAZ931, or LAZ941, which contains Al and Zn, and has flame retardancy in that the Mg—Li alloy does not ignite in a flammability test at 1050° C.