公开(公告)号：US20210277503A1

公开(公告)日：2021-09-09

申请号：US17258136

申请日：2019-07-08

Applicant: CellMobility, Inc.

Inventor： Kicheol Hong ,  Hyeji Park ,  Teakyung Um ,  Heeman Choe

IPC: C22C23/06 ,  C22C1/08 ,  C22C23/02 ,  C22C23/04

Abstract: Morphology, microstructure, compressive behavior, and biocorrosive properties of magnesium or magnesium alloy foams allow for their use in biodegradable biomedical, metal-air battery electrode, hydrogen storage, and lightweight transportation applications. Magnesium or Mg alloy foams are usually very difficult to manufacture due to the strong oxidation layer around the metallic particles; however, in this invention, they can be synthesized via a camphene-based freeze-casting process with the addition of graphite powder using precisely controlled heat-treatment parameters. The average porosity ranges from 45 to 85 percent and the median pore diameter is about a few tens to hundreds of microns, which are suitable for bio and energy applications utilizing their enhanced surface area. This invention based on powder-slurry freeze-casting method using camphene as a volatile solvent is also applicable for other metal foams such as iron, copper, or others to produce three-dimensional metal foams with high strut connectivity.