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From the pictures, we can see that the grain shape of oxides looked like diamonds, and the oxide size at 800°C was smaller than that at 900°C.
Besides, internal oxidation in the interface of coating and substrate was observed at both 800 and 900°C, but the coating demonstrated better resistance to the oxidation at 800°C because the oxides on the coating surface were more compact at 800°C as well as the number of internal oxides was less than that at 900°C.

The weak bonding force between the EPDM and HAF leaded to its relative weak strengthening properties and the larger grain diameter of HAF-550 because of a great amount of weak bonding force interfaces.
F(x1) stands for the value of loss factor when the Sample number 1.

The characteristics of used powders were: • Tungsten powder elaborated by SC SINTEROM SA Cluj-Napoca with: - Particle's average diameter, d50 3,6 µm - Specific surface SB 782 cm2/g - Apparent density, ρa 3,99 g/cm3 • Powder of nickel carbonyl, type INCO 123 with: - Nickel content min 99,7 % - Oxygen content 0,10 % - Carbon content 0,05-0,10 % - Particle average dimension 4-7 µm - Apparent density 1,8-2,5 g/cm3 - Specific surface min 340 cm2/g • Iron powder Höganäs, type NC-100-24 with: - Iron content min 99-38 % - Carbon content max 0,02 % - Oxygen content max 0,03 % - Grain size < 63 µm - Apparent density 2,26 g/cm3 The used powders characteristics are given in Table 1.
The used forging device was endowed with a single pair of chucks. with a working operation of 4 mm and a number of 1860 strike/min.

Thermal conductive path was important and the volume ratio, grain size and aspect ratio of filler were relevant.
Miller, U.S Patent Application Number : 20060014888 (2006) [3] Y.

Generally, the chemical formula of these compounds is (Bi2O2) +2(Am-1BmO3m+1) 2, where A is a combination of one or more mono-, di-and trivalent ions, B is a combination of tetra-, penta- and hexavalent ions, and m is the number of perovskite layers in each unit.
XRD diffraction confirmed that the sample is a single phase of the bismuth- oxide-layer-type structure with m = 4 and has no certain grain orientation.

This is because of the formation of TiC particles agglomerates at grain boundaries [12].
It could be seen that the number of dimples and plastic deformation gradually reduced with the cooling rate increased.

The crystal form process of PZT and the changes of crystal grain size under different heat treatment, the phase of PZT and PLZT thin films were determined by rotating target X-ray diffractometer (D/max-γB, USA) employing an Cu Kα source with fixed electric voltage of 40kV and electric current of 55mA.
Vol. 36 (2007), p. 907. 20 40 60 80 100 0 200 400 600 800 1000 Dielectric constant Frenquency/kHz 6mol% 4mol% 2mol% 1mol% (a) 20 40 60 80 100 0.30 0.35 0.40 0.45 0.50 0.55 0.60 6mol% 4mol% 2mol% 1mol% Dissipation factor Frenquency/kHz (b) Fig.5 Dielectric constant (a) and dielectric loss (b) of PLZT LB films with different La amount 7 8 9 10 11 12 13 14 15 d33/pC/N Content of La-doping/mol% 0 1 2 4 6 Fig.6 Piezoelectricity constant(d33) of PLZT thin films with different La amount (the number at the top of each column represents the mass percent of La in PLZT)

By using a suitable technology a homogeneous structure with a medium grain size of 0.4 µm is generated for the composite ceramic.
Rotation angle: + 25° / - 25° Axial Load: 1500 ± 10 N Frequency: 1 Hz Test time: 100 h (360.000 cycles) Fluid test medium: deionized water Temperature: ambient temperature Number: 3 Pairings The samples were prepared in a way analog to the technology of making of discs for the investigation of mechanical strength.

Combine the above graphical analysis with the actual test process, there is a zero-crossing point in the initial magnetic signal is mainly related with the initial residual stress, grain size and phase, inclusions and other factors.
From 3mm to 60mm, although the displacement has a large increase, the load only increases about 12KN, this stage is strengthening stage, there is an increase in stress in this time, and there is also a certain deformation, leading the magnetic signal curve to keep the same trend basically, it only has some changes in amplitude. when close to 90mm, Specimen produces a strong plastic deformation, the upper compressed layer become larger intensely, The lower stretched layer become smaller, on one hand, intense plastic deformation lead to stress release, it make the stress concentration disappear; on the other hand, intense plastic deformation produces a large number of defects and internal stress in the crystal, they make the magnetic permeability declined significantly, and the greater deformation, the more decline, thus resulting in magnetic memory signal when loaded 90mm all became negative, and the amplitude is relatively small.

Colloid solution was prepared by mixing the solution of titanium tetrachloride, ruthenium trichloride and concentrated hydrochloric acid (Ti, Ru atomic number ratio of 7:3).
The grain size of MWCNTs calculated according to the Scherrer formula was 19.59 nm.