Hostname: page-component-78c5997874-94fs2 Total loading time: 0 Render date: 2024-11-05T19:32:11.331Z Has data issue: false hasContentIssue false
  • English
  • Français

Ternary Carbide Phases Formed by Scandium-Group Elements with Aluminum and Carbon

Published online by Cambridge University Press:  06 March 2019

S. Rosen  and
P. G. Sprang
S. Rosen
Affiliation:
Pratt and Whitney Aircraft North Haven, Connecticut
P. G. Sprang
Affiliation:
Pratt and Whitney Aircraft North Haven, Connecticut
Get access

Abstract

A new group of ternary carbide phases which are formed by combination of an element of the scandium group (which is taken to include the rare-earth elements) with aluminum and carbon has been found. These phases are related to the series of T3BCx compounds discovered by Stadelmaier (T for a transition element and B for a B subgroup element). Atomic size effects are discussed which show that T3BCx phases behave in a manner similar to many ordered binary phases of AB3 stoichiometry. There is a readjustment in size of the various metallic components which results in effective radii compatible with cubic close packing. An anomaly which appears when the observed lattice parameters of T3BCx are related to the Goldschmidt radii of the component atoms is discussed in this light. Measurements of the intensities of X-ray diffraction peaks are used to show that the carbon atom in these phases occupies the octahedral hole in the center of a Cu3Au-type unit cell. This position is maintained in alloys which contain varying amounts of carbon.

Type
Research Article
Information
Advances in X-Ray Analysis , Volume 8: Thirteenth Annual Conference on Applications of X-ray Analysis, August 12-14, 1964 , 1964 , pp. 91 - 102
Copyright
Copyright © International Centre for Diffraction Data 1964

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Stadelmaier, H. H., “Ternary Compounds of Transition Metals, B-Metals, and Metalloids,” Z. Metallk. 52:758–762, 1961.Google Scholar
2. Laves, F., “Factors Governing the Structure of Intermetallic Phases,” Advances in X-Ray Analysis, Vol 6, William M. Mueller and Marie Fay (eds.), University of Denver, Plenum Press, New York, 1963, p. 57.Google Scholar
3. Novotny, H., in: Electronic Structure and Alloy Chemistry of the Transition Elements, Inter-Science Publ., Inc., New York, 1963, p. 197.Google Scholar
4. Dwight, A. E. and Beck, P. A., “Close-Packed-Order Structure in Binary AB s Alloys of Transition Elements,” Trans. AIME 215:976–979, 1959.Google Scholar
5. Warren, B. E., Averbach, B. L., and Roberts, B. W., “Atomic Size Effect in the X-Ray Scattering by Alloys,” J. Appl. Phys. 23: 1493, 1951.Google Scholar
6. Huetter, L. J. and Stadelmaier, H. H., “Ternary Carbides of Transition Metals with Aluminum and Magnesium,” Acta Met. 6:367–370, 1958.Google Scholar
7. Stadelmaier, H. H. and Huetter, L. J., “Ternary Carbides of the Transition Metals Nickel, Cobalt, Iron, Manganese with Zinc and Tin,” Acta Met. 7:415–419, 1959.Google Scholar
8. Ekman, W. Z., “Structural Analogies of Binary Alloys of Transition Elements and Zinc, Cadmium and Aluminum,” Z. Physik, Chem. 12:57–58, 1931.Google Scholar
9. Pearson, W. B., Handbook of Lattice Spacing? and Structures of Metals and Alloys, Pergamon Press, New York, 1958, p. 391.Google Scholar
10. Iandelli, A., in: The Physical Chemistry of Metallic Suintions and Intermetallic Compounds, Vol. I, Chemical Publishing Co., New York, 1960, p. 376.Google Scholar
11. Morgan, E. R., “ Ferromagnetism of Certain Manganese-Rich Alloys,” J. Metals, 6:983–988, 1954.Google Scholar
12. Butters, R. C. and Myers, H. P., “The Structure and Properties of Some Ternary Alloys of Manganese, Zinc, and Carbon,” Phil. Mag. 46:132–143, 1955.Google Scholar