Thermodynamics of oxygen and nitrogen in liquid nickel equilibrated with CaO-TiO[sub x] and CaO-TiO[sub x]-Al[sub 2]O[sub 3] melts
Journal Article
·
· Metallurgical Transactions, B (Process Metallurgy); (United States)
OSTI ID:7284061
- Tohoku Univ., Sendai (Japan)
Equilibrium between CaO-TiO[sub x] or CaO-TiO[sub x]-Al[sub 2]O[sub 3] slags and liquid nickel with respect to oxygen and nitrogen has been studied at 1873 K as a function of Ti (or Al) content in metal, using lime and alumina crucibles. The Al-O, Ti-O, and Ti-Al relations were obtained for liquid nickel equilibrated with these slags. Nitride capacity, C[sub (N)], defined by (mass pct N)[center dot] P[sub O[sub 2]][sup 3/4]/P[sub N[sub 2]][sup 1/2], was evaluated from nitrogen distribution ratios, L[sub N] [l brace]= (mass pct N)/[mass pct N][r brace], coupled with oxygen content in liquid nickel. Activities of Al[sub 2]O[sub 3] and activity coefficients of TiO[sub 2] and TiO[sub 1.5] were estimated either from the content of Al, Ti, and O, using the compiled data for the free energy of formation of oxide and the respective interaction parameters or from the values for L[sub N] and C[sub (N)].
- OSTI ID:
- 7284061
- Journal Information:
- Metallurgical Transactions, B (Process Metallurgy); (United States), Journal Name: Metallurgical Transactions, B (Process Metallurgy); (United States) Vol. 25:1; ISSN MTTBCR; ISSN 0360-2141
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
ELEMENTS
FABRICATION
FLUIDS
LIQUID METALS
LIQUIDS
METALS
NICKEL ALLOYS
NICKEL BASE ALLOYS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
360101 -- Metals & Alloys-- Preparation & Fabrication
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
ELEMENTS
FABRICATION
FLUIDS
LIQUID METALS
LIQUIDS
METALS
NICKEL ALLOYS
NICKEL BASE ALLOYS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS