Kontaktujte nás | Jazyk: čeština English
Název: | Flow-induced defects during metal injection molding: Role of powder morphology | ||||||||||
Autor: | Sanétrník, Daniel; Hausnerová, Berenika; Ponížil, Petr; Novák, Martin; Monková, Katarína | ||||||||||
Typ dokumentu: | Recenzovaný odborný článek (English) | ||||||||||
Zdrojový dok.: | Physics Of Fluids. 2024, vol. 36, issue 8 | ||||||||||
ISSN: | 1070-6631 (Sherpa/RoMEO, JCR) | ||||||||||
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DOI: | https://doi.org/10.1063/5.0219410 | ||||||||||
Abstrakt: | Owing to the quality issues of highly filled compounds used in metal injection molding, the current research is focused on intercepting flow-induced inhomogeneities in multiphase compounds resulting from the segregation of metal powder particles from (typically) three/four-component polymer binders, resulting in an unacceptable porosity of the final sintered metal parts. A recently developed nondestructive approach for quantifying the extent of these flow-induced defects was employed to study the effect of the size and shape of water- and gas-atomized 17-4PH stainless steel powders on segregation. This method combines scanning electron microscopy/energy dispersive x-ray spectroscopy with an in-house analytical tool. The results show a higher tendency of coarser particles (D-50 of 20 mu m) for flow-induced defects, while an irregular shape (water-atomized particles) reduces this unwanted phenomenon. | ||||||||||
Plný text: | https://pubs.aip.org/aip/pof/article/36/8/083334/3309308/Flow-induced-defects-during-metal-injection | ||||||||||
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