bloodmark3

First, I apologize if this is in the wrong section. This might be considered engineering. I just assumed material science was chemistry. My main questions are about the material "metal foam". I'm curious about it's structure and physical properties. Seeing as metal foam is just a metal like copper/aluminum, with gas introduced to it while it's a liquid, does the final product still have the same structure as aluminum/copper? Like, would it be crystalline still? body center cubic? Would it still be metallic bonding? And how would you characterize something like this? Microscopy? There isn't really that much information on metal foam to assist me. I'm not sure if it's just the same metal, with holes, or if it's an entirely new material. Like would it be body center cubic, or etc. How would metal foam be considered bonded? Metallic? And finally, how would you characterize it? microscopy?