Published August 1988 | Version v1
Journal article Metadata-only

Phase equilibria in Fe-FeNb2O6-Nb2O5-Nb system

Creators

  • 1. Chelyabinskij Politekhnicheskij Inst. (USSR)

Description

Using the method of e.m.f. and X-ray phase analysis, an attempt is made to determine phase relations in Fe-FeNb2O6-Nb2O5-Nb system and thermodynamic conditions of their existence. It is established that in this system at 1270-1800 K the following three-phase equilibria are observed: Fe-FeNb2O6-NbO2, FeNb-NbO2-NbO and FeMn2O6-NbO2-Nb2O5. Conditions of existence of the given equilibria and variation of the free Gibbs enrgies during FeNb2O6 and NbO2 formation according to the following reactions Fe+2NbO2+O2=FeNb2O6 and NbO+0.502=NbO2

Additional details

Additional titles

Original title (Russian)
Фазовые равновесия в системе Фе-FeNb

Publishing Information

Journal Title
Izvestiya Akademii Nauk SSSR, Neorganicheskie Materialy
Journal Volume
24
Journal Issue
8
Series
Izv. Akad. Nauk SSSR, Neorg. Mater.
Journal Page Range
1364-1368
ISSN
0002-337X
CODEN
IVNMA

INIS

Country of Publication
Russian Federation
Country of Input or Organization
USSR
INIS RN
20029073
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
IRON ALLOYS; IRON OXIDES; MELTING; NIOBIUM ALLOYS; NIOBIUM OXIDES; PHASE DIAGRAMS; PHASE STUDIES; REDUCTION; TEMPERATURE DEPENDENCE; THERMODYNAMIC PROPERTIES; VERY HIGH TEMPERATURE
Descriptors DEC
ALLOYS; CHALCOGENIDES; CHEMICAL REACTIONS; DIAGRAMS; INFORMATION; IRON COMPOUNDS; NIOBIUM COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHASE TRANSFORMATIONS; PHYSICAL PROPERTIES; TRANSITION ELEMENT COMPOUNDS