Author: O. Norman CarlsonPublisher:
ISBN:
Category : Binary systems (Metallurgy)
Languages : en
Pages : 128
Book Description
A Compilation of Thorium Binary Phase Diagrams
Author: O. Norman CarlsonPublisher:
ISBN:
Category : Binary systems (Metallurgy)
Languages : en
Pages : 128
Book Description
Thorium-carbon System
Author: P. ChiottiPublisher:
ISBN:
Category : Thorium
Languages : en
Pages : 62
Book Description
A study of the thorium-carbon system has been made and a tentative phase diagram constructed from metallographic X-ray, and melting point data. The existence of two compounds, ThC (4.92% carbon) and ThC2 (9.38% carbon), has been verified. No conclusive evidence was found for any other compound. The monocarbide has a sodium chloride type structure, and the lattice constant for this compound is shown to be 5.34 A. This is considerably larger than the lattice constant previously reported for the monocarbide. It is shown that the lattice constant previously measured was that of a solid solution of thorium in thorium monocarbide. The lattice constant at room temperature for the monocarbide phase increases from 5.29 to 5.34 A as the carbon content is increased from about 3.8 to 4.92%. The monocarbide melts at 2625 +/- 25 C and the dicarbide at 2655 +/- 25 C. All compositions between thorium and the monocarbide show complete miscibility in the liquid state and in the solid state at elevated temperatures. However, an immiscibility gap in the solid solution area appears to extend from room temperature to just under the solidus line. The peak of this gap is at about 2% carbon and 1975 C. The compositions of the thorium rich and carbon rich solid solutions for this gap at room temperature are about 0.25% carbon and 3.8% carbon, respectively. The monocarbide and dicarbide also form a complete series of solid solutions at elevated temperatures but show little or no mutual solid solubility at room temperature. The dicarbide forms a eutectic with graphite containing approximately 12.6% carbon which melts at 2500 +/- 35 C.
Phase Diagrams of Binary Vanadium Alloys
Author: John F. SmithPublisher:
ISBN:
Category : Science
Languages : en
Pages : 352
Book Description
Th Thorium Supplement Volume C 8
Author: Michael BickelPublisher: Springer Science & Business Media
ISBN: 3662063484
Category : Science
Languages : en
Pages : 324
Book Description
This volume comprises the compounds of thorium with the 4th main group elements silicon and germanium and all 5th main group elements except nitrogen. On the subject of ternary and polynary compounds containing oxygen, only those compounds with phosphorus are included (e.g., phosphates, hypophosphates, or phosphinates). Similar compounds of the other ele ments like silicates, arsenates, etc. were already treated in "Thorium" Suppl. Vol. C 2, 1976. Most of the compounds in the different systems treated in this volume are of scientific interest because of their special physical and chemical properties. On the other hand, there are also many compounds wh ich are of specific technological interest, mainly in the nuclear field. Refractory compounds like ThSi or ThP have potential interest as nuclear fuel for special reactors due to their physical properties like good heat conductivity and their chemical stability, e.g., against the corrosion of cladding alloys for nuclear fuel elements. Due to the present situation in the further development of the thorium nuclear fuel cycle, their large potential has not yet been fully investigated. For most of the binary and ternary phases in these systems, we presently have good knowledge about the preparation of the compounds and their physical and chemical properties. But nevertheless, there are still a lot of open questions concerning phase equilibria, solid solutions, and homogeneity of some of the phases described in this volume.
NBS Special Publication
Author: Publisher:
ISBN:
Category : Weights and measures
Languages : en
Pages : 776
Book Description
Phase Diagrams of Binary Tungsten Alloys
Author: S. V. Nagender NaiduPublisher:
ISBN:
Category : Science
Languages : en
Pages : 352
Book Description
Applications of Phase Diagrams in Metallurgy and Ceramics
Author: Gesina C. CarterPublisher:
ISBN:
Category : Ceramics
Languages : en
Pages : 776
Book Description
Phase Diagrams of Binary Titanium Alloys
Author: Joanne L. MurrayPublisher:
ISBN:
Category : Science
Languages : en
Pages : 368
Book Description
Phase Diagrams of Binary Beryllium Alloys
Author: Hiroaki OkamotoPublisher:
ISBN:
Category : Science
Languages : en
Pages : 248
Book Description
Evaluations of pure beryllium, plus 72 binary beryllium alloys. Bibliography through 1986. Required reference sources for engineers and scientists alike, each volume in the Phase Diagram Monograph Series presents the most complete, authoritative, and reliable phase equilibria information ever published on the alloys. Each volume comprises critical evaluations of individual alloy systems performed by experts under the ASM/NIST Data Program for Alloy Phase Diagrams. Evaluation involves searching the literature for all existing thermodynamic and related information on the system, assessing value and distilling the best data into a comprehensive report. Phase diagrams are plotted in atomic percent, but include a secondary weight percent scale. Important points are labeled with composition and temperature. Supplementary graphs provide enlargements of complex areas, solubilities and transformations on the phase diagrams, as well as ancillary drawings that show lattice parameters and thermodynamic data. The text includes discussion of stable and metastable phases, order-disorder and magnetic transitions, thermodynamic calculations and modeling, discrepancies in data values and controversial areas and uncertainties in the diagram. In addition, tables list invariant reactions, crystal structures, lattice parameters, experimental values and thermodynamic parameters.
Author: