TY - JOUR
T1 - Simultaneous carburisation and oxidation of niobium in the presence of carbon monoxide
AU - Chrysanthou, A.
AU - Grieveson, P.
N1 - Copyright 2008 Elsevier B.V., All rights reserved.
PY - 1993/1/29
Y1 - 1993/1/29
N2 - During reaction with CO, niobium was observed to carburise and oxidise simultaneously, with NbC, NbO and NbO forming as intermediate products before complete conversion to NbC. It was shown that the reason for such a complex reaction path was the fact that during the carburising reactions enough CO is produced to oxidise the metal. Oxidation takes place by the inward diffusion of CO through cracks and pores to the metal surface. After depletion of Nb, NbC and NbO, the monocarbide continues to grow on NbO. The reaction NbO + 4CO = NbC + 3CO is extremely slow and is controlled by chemical kinetics
AB - During reaction with CO, niobium was observed to carburise and oxidise simultaneously, with NbC, NbO and NbO forming as intermediate products before complete conversion to NbC. It was shown that the reason for such a complex reaction path was the fact that during the carburising reactions enough CO is produced to oxidise the metal. Oxidation takes place by the inward diffusion of CO through cracks and pores to the metal surface. After depletion of Nb, NbC and NbO, the monocarbide continues to grow on NbO. The reaction NbO + 4CO = NbC + 3CO is extremely slow and is controlled by chemical kinetics
UR - http://www.scopus.com/inward/record.url?scp=0027306380&partnerID=8YFLogxK
U2 - 10.1016/0925-8388(93)90285-U
DO - 10.1016/0925-8388(93)90285-U
M3 - Article
AN - SCOPUS:0027306380
SN - 0925-8388
VL - 191
SP - 135
EP - 138
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
IS - 1
ER -