Identyfikatory
Warianty tytułu
Języki publikacji
Abstrakty
The authors used a modern quantum theory allowing to determine the energy levels of electrons in real metal. Based on that analytical equations have been presented by means of which the bulk modulus for chosen metals were calculated. It should be emphasized that all values obtained directly from the derived equation are in perfect conformity with the experimental data, a few percentage differences are comparable with the potential measurement error. Subsequently a simple mathematical model has been proposed which allows to calculate the bulk modulus of copper alloys depending on their percentage composition. The authors performed numerical calculations for the typical copper alloys and the results are presented in the form of graphs.
Wydawca
Czasopismo
Rocznik
Tom
Strony
681--686
Opis fizyczny
Bibliogr. 11 poz., rys., tab.
Twórcy
autor
- Maritime University of Szczecin, Poland
autor
- Maritime University of Szczecin, Poland
Bibliografia
- 1. Ashcroft, N.W. and Mermin, N.D. (1976). Solid State Physics. New York: Holt, Rinehart and Winston.
- 2. Chrzanowski, J. (2013). Some Corrections to the Thomas-Fermi Theory. Chin. Phys. B 22(8), pp. 087101.
- 3. Görling, A. and Levy, M. (1994). Exact Kohn-Sham scheme based on perturbation theory. Phys. Rev. A 50(1), pp. 196-204.
- 4. Harrison W. A. (1989). Electronic Structure and the Properties of Solids. New York: Dover.
- 5. Hohenberg, P. and Kohn W. (1964). Inhomogeneous Electron Gas. Phys. Rev., 136(3B), pp. B864-B871.
- 6. Kittel, C. (1996). Introduction to Solid State Physics. New York: John Wiley & Sons, Inc.
- 7. Kohn, W. and Sham, L.J. (1965). Self-Consistent Equations Including Exchange and Correlation Effects. Phys. Rev., 140(4A), pp. A1133-A1138.
- 8. Ledbetter, H.M. (1981). Elastic Constants of Polycrystalline Copper at Low Temperatures. Relationship to Single‐Crystal Elastic Constants. Phys. Stat. Sol. (a), 66(2), pp. 477-484.
- 9. Powell, C. and Webster, P. (2012) Copper Alloys for Marine Environments. Copper Development Association Publication.
- 10. Teller E. (1962). On the stability of molecules in the Thomas-Fermi theory. Rev. Mod. Phys. 34(4), pp. 627-631
- 11. Zhang, Y., Camilleri, J. A. and Zhu S. (2008), Mechanical Properties of Superelastic Cu-Al-Be Wires at Cold Temperatures for the Seismic Protection of Bridges. Smart Materials and Structures, 17(2), pp. 025008.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-daf1f8e4-6e98-411f-87d7-c5bb818c5cbc