Grain specific surface energy

Specific surface energy or surface tension of a solid Specific free energy of an interface between UC and U vapor Specific energy or tension of a liquid-solid interface Surface tension of a solid in a foreign vapor Surface tension of a grain boundary... 

Energy characteristics of 63/50 diamond grains Specific surface m2/g 0.033 0.190... 

In contrast to liquids, two different volumes of a solid phase can not be merged together upon contact. Since the mobility of molecules within solid phases is low, the differences in the bulk and surface structure of these volumes can not disappear spontaneously. Thus, even at the closest contact possible, the real physical interface having its own characteristic value of the specific surface free energy a is present between the two solid phases. For the two solid crystals, a is referred to as the specific surface energy of the grain boundary, agb. For nonpolar solids -1/2 Umo, (b) is less than the surface energy, a, i.e. -Umo[ (b)= = 2a-a. ... 

Di, Dgt, diffusion coefficients for surface, lattice, and grain boundary diffusion. 8 thickness for surface and grain boundary diffusion. "y,v, specific surface energy po, vapor pressure over a flat surface m, mass of atom k, Boltzmann constant T absolute temperature T, viscosity. 

Specific grinding energy (top) and area percent grinding-induced surface fracture (bottom) vs. the grain depth-of-cut to the -4/3 power for CVD silicon carbide. Tomita, Y. and Eda, H., Development of new bonding materials for fixed abrasive of grinding stone instead of free abrasives processing. Bull JSPE (in Japanese), 61, 10 (1995) 1428 Lawn, B.R. and Swain, M.V., Microfracture beneath point indentations in brittle solids, J Mater Sci, 10 (1975) 113. 

---