Particle Coalescence During Hydrogen Reduction of Fine Fe2O3Powders

Autor:	Herbert Danninger, E. Tarani, Gerhard Jangg, Günter Schrey
Rok vydání:	1986
Předmět:	Coalescence (physics) Materials science Hydrogen Metallurgy Metals and Alloys chemistry.chemical_element Condensed Matter Physics Reduction (complexity) Chemical engineering chemistry Mechanics of Materials Agglomerate Materials Chemistry Ceramics and Composites Particle Porosity
Zdroj:	Powder Metallurgy. 29:265-268
ISSN:	1743-2901 0032-5899
DOI:	10.1179/pom.1986.29.4.265
Popis:	Reduction of fine haematite powders was carried out in a pusher furnace in flowing hydrogen under varying reduction conditions. It was shown that during the reduction process the fine particles coalesce and form agglomerates, the internal porosity of which decreases with increasing reduction temperature. The very high overall porosity of the powder compact is not, however, actually lowered, the coalesced particles being surrounded by large pores, and the compact can be easily milled. Loose iron powders sintered under the same conditions, in contrast, result in massive blocks of comparatively high overall density. PM/0383
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d79626b6e80f76ae719759f1d1ae07d3 https://doi.org/10.1179/pom.1986.29.4.265 Zobrazit plný text záznamu