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Oxyacetylene torch testing and microstructural characterization of tantalum carbide
Author(s) -
PAUL A.,
BINNER J.G.P.,
VAIDHYANATHAN B.,
HEATON A.C.J.,
BROWN P.M.
Publication year - 2013
Publication title -
journal of microscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0022-2720
DOI - 10.1111/jmi.12028
Subject(s) - tantalum carbide , tantalum , carbide , materials science , thermal shock , characterization (materials science) , microstructure , shock (circulatory) , metallurgy , composite material , nanotechnology , medicine
Summary Tantalum carbide samples have been subjected to high‐temperature testing at ∼2300°C using an oxyacetylene torch to evaluate their potential for ultra‐high temperature applications. While large samples cracked during the rapid heating, indicating their inability to withstand thermal shock, small samples survived the severe test conditions. The oxidation products formed were characterized and found to comprise different phases of Ta 2 O 5 . The ultra‐high temperature experienced by the samples resulted in the formation of many interesting microstructures, including the formation of submicron sized grains, which has not been reported previously in the literature, as well as the expected evidence of melting.