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I. VIDA-SIMITI1,* , N. JUMATE1, E. BRUJ1, G. THALMAIER1, O. NASCA1
Hollow spherical, 125 to 500 μm particles of NiCrSiB powders obtained through argon gas atomization were used. The metallic foam structure was obtained by sintering the hollow particles in vacuum, 10-5 Torr at 950ºC. To shape the macro porous open-cell network inside the structure, space holders were used. Thus, bi-porous metallic foams were obtained with closed-cells due to hollow particles and open-cells formed by the space holders. Optical and electronic microscopy was performed to illustrate the microstructure of the bi-porous metallic foams. Thermal conductivity, thermal expansion and sound damping capabilities of the samples were investigated.
Metal foams, Bi-porous structures, Hollow particles, Porous materials.
I. VIDA-SIMITI, N. JUMATE, E. BRUJ, G. THALMAIER, O. NASCA, Sintered foams from Ni-based superalloy metallic powders, Optoelectronics and Advanced Materials - Rapid Communications, 4, 8, August 2010, pp.1174-1177 (2010).
Submitted at: July 30, 2010
Accepted at: Aug. 12, 2010
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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