Phase diagram of Cu sub 2 O-CuO-Y sub 2 O sub 3 system in air
Journal Article
·
· Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (USA)
- Dept. of Metallurgy, Kyoto Univ., Sakyo-ku, Koyoto 606 (JP)
The isobaric phase diagram of the Cu{sub 2}O-CuO-Y{sub 2}O{sub 3} ternary system has been investigated under 0.21 atm oxygen partial pressure mainly by thermogravimetric and differential thermal analyses. The present system was confirmed to consist of four solid phases: Y{sub 2}O{sub 3}, Y{sub 2}Cu{sub 2}O{sub 5}, CuO, and Cu{sub 2}O. The Y{sub 2}Cu{sub 2}O{sub 5} phase is formed by the peritectic reaction with Y{sub 2}O{sub 3} at 1493 K. An univariant reaction, L {l reversible} Cu{sub 2}O + Y{sub 2}Cu{sub 2}O{sub 5}, appears at 1368 K. Cu{sub 2}O is stable at high temperatures and transforms to CuO at 1299 K.
- OSTI ID:
- 5763920
- Journal Information:
- Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (USA), Journal Name: Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (USA) Vol. 21:8; ISSN MTTAB; ISSN 0360-2133
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
656002 -- Condensed Matter Physics-- General Techniques in Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOY SYSTEMS
CHALCOGENIDES
CHEMICAL ANALYSIS
COPPER COMPOUNDS
COPPER OXIDES
DIAGRAMS
DIFFERENTIAL THERMAL ANALYSIS
DISPERSIONS
ELEMENTS
GRAVIMETRIC ANALYSIS
HIGH TEMPERATURE
MIXTURES
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PARTIAL PRESSURE
PHASE DIAGRAMS
QUANTITATIVE CHEMICAL ANALYSIS
SOLID SOLUTIONS
SOLUTIONS
TERNARY ALLOY SYSTEMS
THERMAL ANALYSIS
THERMAL GRAVIMETRIC ANALYSIS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
656002 -- Condensed Matter Physics-- General Techniques in Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOY SYSTEMS
CHALCOGENIDES
CHEMICAL ANALYSIS
COPPER COMPOUNDS
COPPER OXIDES
DIAGRAMS
DIFFERENTIAL THERMAL ANALYSIS
DISPERSIONS
ELEMENTS
GRAVIMETRIC ANALYSIS
HIGH TEMPERATURE
MIXTURES
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PARTIAL PRESSURE
PHASE DIAGRAMS
QUANTITATIVE CHEMICAL ANALYSIS
SOLID SOLUTIONS
SOLUTIONS
TERNARY ALLOY SYSTEMS
THERMAL ANALYSIS
THERMAL GRAVIMETRIC ANALYSIS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES