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A novel concept for the preparation of alloy nanowires
Author(s) -
Milenkovic Srdjan,
Drensler Stefanie,
Walter Hassel Achim
Publication year - 2011
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201000968
Subject(s) - materials science , nanowire , eutectic system , nial , alloy , phase (matter) , chemical engineering , fabrication , yield (engineering) , metallurgy , nanotechnology , intermetallic , chemistry , organic chemistry , medicine , alternative medicine , pathology , engineering
A novel concept for the preparation of alloy nanowires has been developed. By combining two pseudobinary eutectic systems NiAl–W and NiAl–Cr with a completely miscible system Cr–W, a pseudoternary system was created in which there is large two‐phase field between NiAl and W(Cr) solid solutions, separated by a eutectic trough. This enables the fabrication of nanowires with compositions from pure W to pure Cr allowing a free change of the ratio. The directional solidification in the pseudoternary system has been carried out. For the first time alloy nanowires in the W–Cr system have been reported. In addition, nanowires of pure W and Cr were fabricated as well. Moreover, an electrochemical procedure for the release of nanowires from the matrix has been established.High yield of W–Cr alloy nanowires with equiatomic composition.