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The number of test pieces for bending test was 4.
(a)) and a large α-Al2O3 grain (Fig.
Strength of materials depends on size of defects [9], and large CNT agglomerates and α-Al2O3 grains reduced bending strength of the composite.
Fig. 4 SEM micrographs of (a) CNT agglomeration and (b) large α-Al2O3 grain played as fracture origins observed in the composite.

Grain growth could finish at a time in high temperature and high pressure by hydrothermal method, and it does not need later crystallization processing.
Because of narrow distribution of the particle size, low degree of reunion and pure composition, it is often used to synthesis nanometer TiO2 grain [7].
The higher the hydrothermal temperature, the greater the energy possessed by the grain when they grew, so the particle size obtained last became bigger.
Fig. 1 XRD patterns of TiO2 gel obtained in various temperatures Fig. 2 TEM of nano-TiO2 particles at 230°C Fig. 3 SEM pattern of TiO2 thin film at 230°C Table. 1 The diameters of nano-TiO2 particles fabricated by the hydrothermal method Number The hydrothermal temperature The particle size II 170°C 10 V 200°C 16 VIII 230°C 20 Specific surface area became smaller and the dye adsorbance decreased when the diameters of nano-TiO2 particles became small and the contact area of the electrolyte and the particles also became smaller which lead to the compound chance of the electrons injected onto the TiO2 electrod and the electron acceptors in the electrolyte solution being reduced.

Fig.1 The Geometrical Relationship OF The Single Grain in Grinding The work by Tan Jin et al. [8] proposed a strain rate model based on the geometrical relationship shown in Figure 1.
This method provides the strain rate effect in grinding with the single grain.
The mean strain rate of the material in contact layer is expressed as: (5) Where half of grain cone angle θ as the cutting rake angle α0, ϕ is shear angle, λ0 is ratio of shear zone length to width and t0 is undeformed chip thickness which talked about in detail before [7].
Results and Analysis Table 2 Resulting Temperatures and Strain Rates under Various Process Parameters Serial number Wheel speed [m/s] Feed rate [m/s] Depth of cut [um] Temperature[℃] Strain rate [s-1] measured calculated 1 15 0.0125 10 163 194 7.82E+07 2 10 0.0125 30 506 553 9.11E+07 3 20 0.0125 30 490 537 2.55E+08 4 20 0.025 20 278 347 1.43E+08 5 15 0.0125 20 286 290 1.28E+08 6 30 0.0125 20 369 335 1.83E+08 7 35 0.0125 30 743 797 3.66E+08 8 35 0.025 30 500 591 3.05E+08 9 20 0.05 20 168 259 1.04E+08 10 20 0.05 30 221 306 9.42E+07 Temperature Correlation 0.602 -0.734 0.866 - - Strain rate Correlation 0.901 -0.721 0.691 - - The process parameters and the resulting experimental measurement and calculated temperature and strain rate are shown in table 2 and most of calculated temperatures are very near the measured results.

According to the predetermined number, lead acetate trihydrate with 20mol% excess, lanthanum acetate hydrate, and acetic acid were mixed in a ratio.
The grains were uniformly distributed both fine and large together with an average grain size of 27.7nm and 38.8nm and the obtained roughness parameter (Ra) was 0.304nm and 0.648nm by signal and multistep annealing, respectively.
Compared with signal annealing, the films by multistep annealing have higher dielectric constant and loss, this may because the increasing grain size.

The specifics of polycrystalline deformation are connected with the availability of grains, grain boundaries, grain sizes, etc In order to study properties and behavioral patterns of crystallites with certain orientations under load in detail, it is advantageous to use single crystals as model materials.
At the same time, shear heights in bands composing some SEDR is close to these numbers and ranges from 100…1400 nm.

Results and discussion The initial structure of steel samples 150HNML with a hardness about 300 HV consists of a small amount of irregular distributed sites of a carbide eutectic (ledeburite) (on average about 5 %), a secondary cementite on borders and in grains and products of diffusive decay of austenite.
Samples of H12MFL steel have cellular dendritic structure with a size of cells of 20-30 µm consisting of the austenitic and carbide eutectic in number of about 25 % formed on borders of primary crystals of austenite, products of diffusive decay of austenite and secondary carbides inside cells.
At a temperature of heating of 850 °C in structure of samples of steel 150HNML along with martensite the excessive cementite is remained in the form of a grid on borders and plates in grains.
With increase in temperature of an austenitization the grain size naturally increases.

Major driving forces for rotations are asymmetric sintering necks [4], non uniform sintering activity [6] and the need to form low energy contact grain boundaries [7].
Thus fast rotations driven by the need to form low energy grain boundaries can occur.
The coordination numbers match the literature values very well.
Misorientation for Grain Boundaries in Gold by Crystallite Rotation Method - I. [001] Twist Boundaries, Acta Metallurgica, 33, 1113-19 (1985) [15] T.

Rice husks are the hard, protective covering of rice grains which are removed from the grains during the milling process [5].
As more water is evaporated, the number of conductive pathways available in the specimen decreases, which increases the resistance in response [9].
Bechtel, “The rice grain and its gross composition,” in Rice: Chemistry and Technology, B.

For forsterite ceramics to exhibit the best possible combination of properties, such as bioactivity, load-bearing capabilities and fracture toughness, they have to be made on the nanosized scale with respect to their grain size [9].
The produced glass-ceramics, have a variety of well established technical uses that depend on their uniform and reproducible fine-grained microstructures, absence of porosity and other wide range of properties, which can be tailored by an adjustment of composition and heat treatment procedure applied.
The values obtained for ∆Cp changes at Tg for the two glasses seem to be justified in the light of the available explanations, but on the other hand, the contradiction represented by the huge difference in the amount of heat accompanying crystallization of both glasses, could be due to their different ability or readiness for crystallization as a result of major differences in the number and strength of broken oxygen bonds or bridges in the two glasses [15,16].
Materials produced this way, are characterized by their uniform reproducible fine-grained microstructures, absence of porosity and other wide-range of properties, which can be tailored by controlling both, base glass composition and heat treatment procedure applied.

MATLAB’s Image Processing toolbox was then used to determine the change in area of the electrode, as calculated from the change in the number of pixels that comprise the electrode in each photograph.
Upon further magnification, using FESEM imaging, as shown in Fig. 3, most of the grains were found to have diameters of less than 10 mm.
In addition, the widths of the cracks between the ELD silver grains were all in the nanometer range.
This shows that despite the tendency of ELD silver electrodes to form micro-cracks when subjected to strain, the silver grains were still able to remain connected, such that conductivity was retained.