Metallic Foams Obtained from Nickel Based Superalloy Hollow Spheres
In this work, hollow spherical nickel based superalloy powders obtained by liquid phase atomization were used. The obtained powder was divided into six size particle ranges between 200 µm and 630 µm using a shatter box. Samples from all six ranges were obtained by spreading the powder into the sintering die and consolidating them by sintering at 900°C and 1000°C for 30 minutes in vacuum (10-4 Torr). The metallic foams obtained by sintering hollow particles presents high porosity, and can be used as thermal barriers, catalyst support, shock absorbers or lightweight structural elements.
Ionel Chicinaş and Liviu Brânduşan
I. Vida-Simiti et al., "Metallic Foams Obtained from Nickel Based Superalloy Hollow Spheres", Materials Science Forum, Vol. 672, pp. 141-144, 2011