TY - JOUR
T1 - Empirical model for ideal work of adhesion
T2 - Transition-metal aluminides and silicides
AU - Yoo, M. H.
AU - Yoshimi, K.
N1 - Funding Information:
The authors would like to thank C.L. Fu, J.A. Horton, and E.P. George for stimulating discussions and helpful comments on the manuscript. This research was sponsored by the Division of Materials Sciences and Engineering, Office of Basic Energy Sciences, US Department of Energy, under Contract DE-AC05-00OR22725 with UT-Battelle, LLC, and also supported in part by the program of Japan Society for the Promotion of Science Postdoctoral Fellowships for Research Abroad.
PY - 2000/9
Y1 - 2000/9
N2 - The role of atomic bonding in the brittle fracture of intermetallic alloys has been assessed theoretically. A simple empirical model is proposed for the ideal work of adhesion, resulting from a rigid-body separation, in terms of four variables, viz. the elastic stiffness constant, the equilibrium interplanar spacing, and two scaling length parameters. The ratio of these two length parameters is assessed based on the available results of ab initio slab-supercell calculations. Ideal cleavage energies and critical stress intensity factors of transition-metal aluminides and silicides are estimated, and the results are discussed by comparing with the available experimental data of brittle fracture. The difference between the proposed model and other models, temperature dependence of surface energies, and an extension of this model for interfacial adhesion are also discussed.
AB - The role of atomic bonding in the brittle fracture of intermetallic alloys has been assessed theoretically. A simple empirical model is proposed for the ideal work of adhesion, resulting from a rigid-body separation, in terms of four variables, viz. the elastic stiffness constant, the equilibrium interplanar spacing, and two scaling length parameters. The ratio of these two length parameters is assessed based on the available results of ab initio slab-supercell calculations. Ideal cleavage energies and critical stress intensity factors of transition-metal aluminides and silicides are estimated, and the results are discussed by comparing with the available experimental data of brittle fracture. The difference between the proposed model and other models, temperature dependence of surface energies, and an extension of this model for interfacial adhesion are also discussed.
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U2 - 10.1016/S0966-9795(00)00082-0
DO - 10.1016/S0966-9795(00)00082-0
M3 - Article
AN - SCOPUS:0034262759
VL - 8
SP - 1215
EP - 1224
JO - Intermetallics
JF - Intermetallics
SN - 0966-9795
IS - 9-11
ER -