In-situ deposition of diamond on functionally graded copper scaffold for improved thermal conductivity and mechanical properties

Revolutionizing Monolithic Catalysts: The Breakthroughs of Design Control through Computer‐Aided‐Manufacturing

“…A last calcination step was performed to finally achieve a load of 0.39 mg cm −2 of active phase. The metal structure got a good roughness that allowed an acceptable adherence without any extra surface treatment as also observed by other authors [89] (Figure 13a,b). XRF and SEM-EDX results showed signals of Ni-Ce-Zr in the same locations suggesting an adequate interaction between those elements.…”

“…[87] Besides their high precision, both techniques allow the use of catalytically active metal materials during printing, making possible the attainment of catalysts with harsh reaction conditions. However, they present some drawbacks: i) internal stress caused by temperature gradients, [88] ii) roughness of the surfaces obtained because of the unsintered/unmolten particles added on the structure depending on the process parameters used, [89] iii) necessity of a post treatment or coating to enable the attachment of active phases, and iv) requirement of an inert atmosphere to protect metals from oxidation. [89][90][91] To date, few works are reported for the LS or LM printing of monolithic supports for catalysis.…”

“…However, they present some drawbacks: i) internal stress caused by temperature gradients, [88] ii) roughness of the surfaces obtained because of the unsintered/unmolten particles added on the structure depending on the process parameters used, [89] iii) necessity of a post treatment or coating to enable the attachment of active phases, and iv) requirement of an inert atmosphere to protect metals from oxidation. [89][90][91] To date, few works are reported for the LS or LM printing of monolithic supports for catalysis. Notwithstanding, due to the generally metallic nature of raw materials used in PBF processes, the structures obtained may be used directly as catalyst using this metal base as the active phase.…”

“…The authors followed similar methodology to produce copper monoliths coated with a grown in-situ diamond film. [89] Before the CVD, some samples were polished by abrasive flow with loading of 90 kg for 12 min to analyze the effect of surface roughness on the coating film. Diamond growth was performed under .…”

Manufacturing of high strength and high conductivity copper with laser powder bed fusion

“…5a). Figure 5b summarizes the compressive yield strength of porous Cu parts versus relative lattice density [47][48][49][50][51] . The lattice made of LaB 6 -doped Cu has a yield strength of 23 MPa at a relative lattice density of 0.3, which is 3.5 times higher than the strength of the same lattice made of pure Cu of the same relative lattice density.…”