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on preexisting fractures. WANG et al [31] also used the flow-couple PFC model to simulate hydrofracture, and the results of which have demonstrated adequate matching with the measured data... as soon as the bond breaks. Dealing with this problem, AL-BUSAIDI et al [30] assigned the same aperture to the pipes on both bonded and broken contacts, which led to a uniform diffusion of the fluid......
powders of matrix, 2) mechanical alloying, which raises the elemental state powders’ temperature and solid diffusion occurs to produce the alloy, and 3) semisolid compaction which fills the free spaces......
slower than the diffusion kinetics, which tends to make it reaction-limited, so, temperature could be an effective parameter [29-31]. The rate of calcite dissolution was found to be relatively independent.... The difference in Ea is small but meaningful. However, the Ea values reported represent apparent activation energies, which include diffusion-controlled reactions on the surface of pyrite as well......
in the solid/liquid interfacial energy, leading to a decrease in the nucleation rate, and 3) a necessity for the long-range diffusion of atoms, leading to a decrease in the growth of crystalline phases [15,16......
layer, the oxidation kinetics became linear. Long-term protection was generally associated with the diffusion-controlled process [35]. As the diffusion distance (scale thickness) increased with oxidation... phase, the self-diffusion rates of oxygen and Ti ions in the TiO2 crystal structure were inherently higher than those of Al2O3 (α) and SiO2 because of the existence of oxygen interstitial and Ti vacancies......
of the Chinese Ceramic Society, 2015, 43: 1271-1276. (in Chinese) [17] LIU Xin-gang, MENG Dong-ning, WANG Yu-hui, CHEN Huan, JIN Miao. Influences of high-temperature diffusion on the homogenization......
osmotic gradients [J]. Geotechnique, 2006, 56(10): 707–713. [39] SHACKELFORD C, DANIEL D. Diffusion in saturated soils, Part I [J]. Geotechnical Engineering, 1991, 117: 467–484. [40] SHEAR M K, COOPER......
volatility jump diffusion model: (2) where μt is the drift term with a continuous variation sample path; σt denotes......
is the mean thickness of the grain boundary thickness, Dob is the boundary self-diffusion coefficient, Qb is the boundary diffusion activation energy, and k is the Boltzmann’s constant. The driving force......
in NC materials is usually attributed to the grain boundary diffusion, which tends to be more active at higher temperatures [31]. Also, substantial decomposition of microstructure takes place at higher......
