THE OXIDATION OF NIOBIUM
Journal Article
·
· J. Inst. Metals
OSTI ID:4175107
The oxidation rates of pure niobium were measured in dry and moist oxygen and air over the range 400 to 1050 deg C. It was found that: (1) the form of the oxidation-rate/ temperature curves for niobium is dependent on the specimen shape and dimensions; (2) niobium oxide in contact with niobium shows an anion-deficient lattice at temperatures near 700 deg C; (3) a cation-deficient lattice is formed in the region of 450 deg C, but it is suggested that this is an effect dependent on the formation of metastable oxides; and (4) the formation of non-stoichiometric oxides accelerates oxidation. Apparent anomalies in the oxidation rates can be explained by departures from stoichiometry in the oxides. (auth)
- Research Organization:
- Univ. of Sheffield, Eng.
- NSA Number:
- NSA-14-012860
- OSTI ID:
- 4175107
- Journal Information:
- J. Inst. Metals, Journal Name: J. Inst. Metals Vol. Vol: 88
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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