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- W3121828525 abstract "Commercially pure (c.p.) iron powders with a deliberate high degree of oxidation were consolidated by medium-frequency electrical resistance sintering (MF-ERS). This is a consolidation technique where pressure, and heat coming from a low-voltage and high-intensity electrical current, are simultaneously applied to a powder mass. In this work, the achieved densification rate is interpreted according to a qualitative microscopic model, based on the compacts global porosity and electrical resistance evolution. The effect of current intensity and sintering time on compacts was studied on the basis of micrographs revealing the porosity distribution inside the sintered compact. The microstructural characteristics of compacts consolidated by the traditional cold-press and furnace-sinter powder metallurgy route are compared with results of MF-ERS consolidation. The goodness of MF-ERS versus the problems of conventional sintering when working with oxidized powders is analyzed. The electrical consolidation allows to obtain higher densifications than the traditional route under non-reducing atmospheres." @default.
- W3121828525 created "2021-02-01" @default.
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- W3121828525 date "2018-05-10" @default.
- W3121828525 modified "2023-09-27" @default.
- W3121828525 title "Medium-frequency Electrical Resistance Sintering of Oxidized c.p. Iron Powder" @default.
- W3121828525 doi "https://doi.org/10.20944/preprints201805.0168.v1" @default.
- W3121828525 hasPublicationYear "2018" @default.
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