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Reactivity of carbon based materials for powder metallurgy parts and hard metal powders manufacturing

Raffaele Gilardi ; Luigi Alzati ; Raquel Oro ; Eduard Hryha (Institutionen för material- och tillverkningsteknik, Yt- och mikrostrukturteknik) ; Lars Nyborg (Institutionen för material- och tillverkningsteknik, Yt- och mikrostrukturteknik) ; Sigurd Berg ; Luigi Radicchi
Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy (0532-8799). Vol. 63 (2016), 7, p. 548-554.
[Artikel, refereegranskad vetenskaplig]

Carbon is a key element for powder metallurgy. For example, carbon is the basic alloying element in PM sintered steel, and carbon powders are used as a carbon source for the production of hard metals. However, there are only a few studies about the mechanisms of carbon dissolution and reactivity in dependence on the carbon sources with solid metals/oxides. This work presents the effect of the carbon source (different graphite and carbon black types) on the reactivity and efficiency of oxides reduction during the sintering of PM steels and on the synthesis of nanocrystalline WC powders. This experimental work sets the basis for optimizing the production of PM steel parts and nano-WC powders based on raw material selection and process conditions.

Nyckelord: Carbon black; Graphite; Hard metal; Powder metallurgy; Reactivity



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Denna post skapades 2016-12-19. Senast ändrad 2017-02-21.
CPL Pubid: 246218

 

Institutioner (Chalmers)

Institutionen för material- och tillverkningsteknik, Yt- och mikrostrukturteknik (2005-2017)

Ämnesområden

Materialvetenskap
Metallurgi och metalliska material

Chalmers infrastruktur