Influence of Alloying with Elements of Subgroups IV, V, and VI on the Oxidation of Vanadium in Heating in Air

Journal Article · Sat Mar 01 04:00:00 EST 1986 · Sov. Mater. Sci. (Engl. Transl.); (United States)

DOI:https://doi.org/10.1007/BF01147578· OSTI ID:6972518

Shirokov, V V; Kas'yan, I M; Stepanishin, V I; Vengrenovich, R D

It is established that unalloyed vanadium has the lowest oxidation resistance in air; it is resistant in air up to 523 K. Further heating leads to a marked increase in weight, especially at 737 K, and subsequently at 1000 K. X-ray diffraction analysis of the scale formed (573 - 737 K) indicates the presence on the surface of the oxides VO and V/sub 2/O/sub 3/ or of those close to them stoichometrically. In all cases the layer of metal directly adjoining the scale is characterized by an increased hardness and poor etchability. Composite derivatograms are shown which were obtained in heating of typ VnM-2 unalloyed vanadium and its alloys. It is shown that alloying of vanadium with niobium, tungsten, titanium, chromium, and zirconium increases its scaling resistance but has little influence on the temperature of the transition of the oxidation products to the liquid phase.

• Research Organization: G.V. Karpenko Physicomechanical Institute, Lvov
• OSTI ID: 6972518
• Journal Information: Sov. Mater. Sci. (Engl. Transl.); (United States), Journal Name: Sov. Mater. Sci. (Engl. Transl.); (United States) Vol. 21:5; ISSN SOMSA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMIUM
COHERENT SCATTERING
CORROSION RESISTANCE
DIFFRACTION
ELEMENTS
HARDNESS
MECHANICAL PROPERTIES
METALLURGICAL EFFECTS
METALS
NIOBIUM
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
REDOX POTENTIAL
SCALING
SCATTERING
TEMPERATURE EFFECTS
THERMODYNAMIC PROPERTIES
TITANIUM
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
TRANSITION TEMPERATURE
TUNGSTEN
VANADIUM
VANADIUM ALLOYS
VANADIUM COMPOUNDS
VANADIUM OXIDES
WEIGHT
X-RAY DIFFRACTION
ZIRCONIUM