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Sol–Gel Derived Fe‐Rich Matrix Composites Having Precipitated WC
Author(s) -
Álvarez Esteban A.,
García José,
Benavídez Edgardo R.,
González Oliver Carlos J. R.
Publication year - 2015
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201400122
Subject(s) - materials science , sol gel , composite number , composite material , phase (matter) , matrix (chemical analysis) , amorphous solid , carbon fibers , flux (metallurgy) , metallurgy , nanotechnology , crystallography , chemistry , organic chemistry
SEM image of a sol–gel derived composite presenting WC grains (grey phase) embedded in a Fe binder matrix (dark phase). The crystalline composites are prepared from amorphous sol–gel masses containing W, Fe alkoxides and extra carbon. WC and Fe precipitate in‐situ out of the WCFeO masses during a two steps heating process under a flux of H 2 /Ar up to 600–800 °C and then under vacuum up to 1250 °C.