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From the figure, with infiltration procedure number increasing, the titania sol amoun 50μm 50μm A B Fig.2 SEM images of carbon-titania composites.
From the figure, the titania gel grains can been found in some pores of template.
However, it can also be showed that many pores have little or no TiO2 gel grains.
From Fig.4, the titania gel grains adhere the wall of template, and more titania sol was infiltrated into the template than those infiltrated with the first route.

The multiple granular sodium bentonite grain size: d90 = 0.85 d10 = 0.074, which was subjected to activation by being milled once in a disintegrator.
For the tested concrete, Portland cement CEM I 42.5 R, aggregate broken basalt grain size of 16 mm and sand grains to 2 mm were used.
The addition of bentonite to the trial cement batch caused an increase in its volume, and this in turn affected the volumetric efficiency which ultimately reduced the number of individual components for 1 m3 of concrete.

A dressing process is needed to remove worn grains, to disclose new and sharp grains and to restore the geometry of cutting face of the wheel Chang and Szeri [5], Zhang et al. [11], Sunarto and Ichida [12], Chen et al. [13], Fathima et al. [14], Webster and Tricard [15].
The tops of separate diamond grains are also visible.
A large number of diamond grains protrudes highly above the bond.
It is seen that the worn areas at the grains tops are small and the holes from fallen grains are observed in the bond.
Structure of the High Speed Steel, ×800: (a) Structure of the Standard Surface of the High Speed Steel, (b) Destruction of Tool Cutting Edge, (c) Growth of the Carbide Grains Caused by High Temperature, (d) Maximal Growth of the Carbide Grains.

It is found that under confining pressure 200 and 300 kPa, elastic modulus raises with the increasement of coarse grain content to a certain degree and then declines, and the maximum elastic modulus corresponds to good gradation.
While, as for confining pressure 100 kPa, elastic modulus raises with the increasement of fine grain content.
Table 1 Physical properties of three kinds of tailings Number Soil type Composition ds e w cu cc 1# Tail fine sand >0.075mm 85% <0.075mm 15% 2.98 0.861 28.4% 1.68 4.2 2.18 2# Tail silty sand >0.075mm 64% <0.075mm 36% 2.96 0.858 27.8% 1.64 3.8 5.0 3# Tail floury soil >0.075mm 19% <0.075mm 81% 2.92 0.856 28.1% 1.63 3.9 2.3 Experimental results and analysis Curve analysis dynamic elastic modulus and dynamic strain At confining pressure 100, 200 and 300kPa, relationship between dynamic modulus and strain curves of the three Tailing’s dynamic triaxial tests are shown in Fig.1.

The nucleation process is of importance for modelling multiphase microstructures in three aspects: (i) the resulting number density of nuclei; (ii) the spatial distribution of nuclei; (iii) the time distribution of nucleation events.
The first is directly related to the average grain size of the resulting microstructure, the second and the third issue form the basis for the grain-size distribution, which is also influenced by the growth kinetics.
Since small grains are more sensitive to the internal stresses generated during the martensitic transformation, the austenite stability increases with decreasing grain size.
This concerns both the grain size (distribution) and the grain morphology of the different phases, and the continuity of the phases.
In general, small austenite grains and austenite grains containing more carbon are more stable (eq. (6)).

The diffraction peak near 16° would be sharper and had larger grain size.
Instead of, the grain size might have an obviously decrease.
Besides, abnormal grain growth would lead to a decline in the strength and modulus of.
At the mean time the grain size was also the largest.
It can be speculated that when the grain size and crystallinity grow, the modulus would increase.

Fe forms compound FeAl3 with Al, which increases the distortion density and tensile strength, causeslattice distortion and grain refinement.
Thus, on the one hand, these phases bring effect of solution, causethe distortion of metal lattice and generate resistance by electron scattering;On the other hand a part of metallic bonds were changed by these metal compounds, thusthe effective number of electronic reduces and the resistance of the wire increases.
SEM photograph of the alloy (the white strips are Fe phase) As can be seen from Table 2, with the increasing content of Fe, the tensile strength of the aluminum alloy conductors constantly increasesand maintains at a high level, which is very important in the long-distance power transmission applications or overhead cables.The increase of the tensile strength is due to the fact that Fe can generate FeAl3 with Al, which will increase the dislocation density and the lattice distortion, and will increase the tensile strength,which leads to grain refinement.Figure 2 shows that Fe solid solution in Al and the solute atoms will cause the lattice distortion, increase the resistance of the movement of the dislocation, which make the slip difficult to perform, resulting in the increase in the strength and hardness of the alloy solid solution.
Annealing process can also uniform chemical composition and organization of aluminum test rod, which affect the grain refinement, work hardening and elevating tensile strength.
(2)BothFe and heat treatment process have a strong influence on the mechanical property of the aluminum rod.Fe can generate FeAl3that causes solid solution strengthening and grain refinement to improve the tensile strength.

This model starts with the hypothesis that the local magnetocrystalline anisotropy is lowered by a factor depending on the number of crystalline grains in the exchange volume.
However, one can deduce from this result that FeSi grains grow despite the presence of oxygen inside the films.
Moreover, it is supposed that the grain growth leads to an enrichment of the residual matrix in oxygen and that this matrix remains amorphous.
Then, once relaxation is complete, the annealing induces the crystallization of FeSi grains that facilitates the electrons transfer in the film and leads to a stronger decreasing of the resistivity.

Thickness of the thin film was controlled by the number of times of the spin coating.
The film thickness was determined by using the α-step, and roughness and grain size was analyzed using atomic force microscopy (AFM).
The grain size of each thin films was in the range of 2~3 nm The raman spectra showed each film had well-crystallized anatase structures. 3000 2950 2900 2850 2800 2750 18min 12min 6min Absorbance (arb.uni) Wavenumber (cm -1 ) (a) 0min 3000 2950 2900 2850 2800 2750 18min 12min 6min Asorbance (arb.uni) Wavenumber (cm -1 ) 0min (b) 3000 2950 2900 2850 2800 2750 12, 18min 6min Absorbance (arb.uni) Wavenumber (cm -1 ) (c) 0min 0 2 4 6 8 10 12 14 16 18 0 10 20 30 40 50 60 70 80 90 100 Decomposited stearic acid (%) Time (sec) 5nm 10nm 30nm (d) Fig. 1.
In the present study, the TiO2 thin films consist of nano-sized grains and the size of grains from each film was identical.

It can clearly be seen that the grain size became fine with the increased cooling rate because the phase transition temperature lowered as the cooling rate increased, the increased number of nucleation limited the growth of grain.
The ferrite grain nucleated and grew in the grain boundary of the cooled austenite at first, all of the remaining austenite transformed to pearlite when the temperature decreased below the eutectoid transformation temperature.