A kind of surface roughness is produced by the application of laser energy density at high laser power (> 140W) which looks like an open porous structure. This kind of structure is not observed at lower laser power.
Is it produced due to oxidation of the layer? Or could it be a sign of instability at high laser power?
Dear Sir,
perhaps you could have an example of specific microstructure with copper-oxides composites in the paper:
A multimaterial based on metallic copper and spinel oxide made by powder bed laser fusion: A new nanostructured material for inert anode dedicated to aluminum electrolysis. Pasquet et al. Journal of Materials Processing Technology
Volume 278, April 2020, 116452 (available at https://oatao.univ-toulouse.fr/26092/1/Pasquet_26092.pdf).
Best regards.
Ph.
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