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Transition Metal Solubilities in WC in Cemented Carbide Materials
Author(s) -
Weidow Jonathan,
Johansson Sven,
Andrén HansOlof,
Wahnström Göran
Publication year - 2011
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2010.04122.x
Subject(s) - solubility , carbide , materials science , metal , density functional theory , transition metal , analytical chemistry (journal) , metallurgy , chemistry , computational chemistry , catalysis , organic chemistry
Solubilities of different transition metals in WC in cemented carbides at around 1700 K were determined with atom probe tomography. Ta had the highest solubility, followed by Nb, Cr, and V, all with atom fractions in the 10 −3 range. Ti and Mn showed lower, yet detectable, solubilities in the 10 −6 or 10 −5 range. Zr and Co solubilities were too low to be measured. The results were compared with the theoretically calculated solubilities using density functional theory. These calculations predicted that Ta, Nb, V, and Cr should have the highest solubility, all in the 10 −4 or 10 −3 range. Ti was predicted to have a lower solubility (10 −5 range) and Co, Hf, and Zr even lower (10 −8 or 10 −7 range).