Research Advances in Additive Manufacturing of Copper-Coated Diamond Composites
A study by researchers from the UK and Saudi Arabia has demonstrated a method for processing copper-coated diamond using Laser Beam Powder Bed Fusion technology, achieving porosity below 2.5%. This research reveals potential for new microstructural designs in metal-ceramic composites, critical for various industrial applications.
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Researchers from the University of Wolverhampton, Diamond Hard Surfaces Ltd, and Prince Mohammad Bin Fahd University have explored the processing of copper-coated diamond via Laser Beam Powder Bed Fusion (PBF-LB). They established a processing window of 150-220 J/mm³, achieving low porosity and stable geometric behavior.
The study revealed six processing regimes and identified a novel self-organised sub-micron porous lattice within a specific energy window. The Robinson-Arjunan scaling law was developed to predict lattice structure spacing. This study indicates that PBF-LB can facilitate controlled microstructural self-organization, creating hierarchical porosity not found in conventional metals, which may impact future manufacturing processes.
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