Part II - Papers - Elastic and Allied Models for Energies of Point Defects
- Organization:
- The American Institute of Mining, Metallurgical, and Petroleum Engineers
- Pages:
- 3
- File Size:
- 917 KB
- Publication Date:
- Jan 1, 1968
Abstract
Various semiempirical equations which relate defect-formation energies and entropies with elastic and thermal properties of a metal crystal are shown to be related by a simple model for lattice energy. An illustrative comparison of theory with experiment is made using self-diffilsion data for fee metals. SEVERAL workers have related the free energy of defect formation with elastic and thermal properties of a crystal lattice, particularly elastic bulk modulus and Debye temperature. The present note shows how the various approaches are related by a simple model for lattice energy. A comparison of theory with experiment is given using the self-diffusion parameters of fee metals. 1) A MODEL OF THE CRYSTAL LATTICE The internal energy per atom in a metallic lattice may be written U=Ui-Ue [1] where Ui and Ue refer to ion-ion interaction and valence electron energies, respectively. The volume per atom V has an equilibrium value 52 for which
Citation
APA: (1968) Part II - Papers - Elastic and Allied Models for Energies of Point Defects
MLA: Part II - Papers - Elastic and Allied Models for Energies of Point Defects. The American Institute of Mining, Metallurgical, and Petroleum Engineers, 1968.