Investigations of Corrosion Resistance of Laser Separated Open Cell Metal

Abstract

Open cell metal foam contributes promising solutions to the light weight design, battery applications, and renewable energy. Still, challenges are present concerning the cutting into a defined shape. Mechanical processes like milling and grinding create surface smearing on the foam, which leads to a loss of their open cell behavior. Laser remote cutting offers a promising solution in order to overcome those challenges. Their investigations consider that this technique has a high potential concerning cutting speed, which is increased by more than 500% compared to state of the art laser separation techniques. Nevertheless, quality improvements regarding spatter formation and fouling or corrosion resistance has to be investigated. This paper offers insight into the viability of remote laser cutting and how quality aspects can be improved.

The most filigree structure made by remote laser cutting

“…Additionally, it can be seen that the maximum cut velocity is 300 m/min for various pore sizes. Previous investigations depict a similar cutting speed for various materials and pore sizes [14][15][16]. This is caused by the maximum possible scan velocity of the utilized scanner.…”