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In addition, they may have inferior resonant characteristics due to a large number of defects in these SiC films such as stacking faults and dislocations (or grain boundaries).

The following parameters of cutting modes were taken as independent variables: fn – longitudinal feed of the cutter per revolution of the processed shaft, 0.08…1.2 mm/rev; faz - azimuthal feed circular feed of a workpiece, m/min; nr – number of revolutions of the workpiece, 12.5…630 rpm; nb – revolutions of the tool, 6000…18000 rpm; amf – cutting depth, 0.1…0.9 mm.
Influence of Additives of Nanoparticles on Structure Formation of Fine-Grained Hard metals.

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.

Introduction Piezoelectric lead zirconate titanate (PZT) ceramic material has been widely used for transducer applications, due to its excellent piezoelectric properties, and was a candidate in a number of recent investigations [1, 2].
There was no change in the grain size.

The intrinsic brittleness of Ti(C,N) can be improved by grain refinement so as to promoting the further development and application of Ti(C,N); nano-TiO2 as a new photo catalyst, anti-UV agents, photoelectric effect agents, shows broad application prospect in the areas of anti-bacterial defense, anti-fouling, anti-aging and car painting,.
After stopping discharging and removing the upper electrode, the upper electrode and lower Electrode surface is coated by a large number of visible gold powder which shows that a chemical reaction occurs(as shown in Fig.4).

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.

A carbonization time was 1 hour under vacuum condition to produce initial values of particle and grain sizes that had a neat structure and had absorption capacity.
Acknowledgment Full gratitude for the financial support provided by the Directorate of Research and Development of the University of Indonesia in the International Publication Indexed Grant (PUTI) program based on contract number NKB-1018 / UN2.RST / HKP.05.00 / 2020, and Postgraduate Program's support in Materials Science, University of Indonesia, for research facilities.

It has been shown that Mössbauer spectroscopy enables quantitative evaluation of the degree of ordering of phases occurring in samples characterised by large graining, in the case of which it is not possible to determine the long-range order parameter by X-ray diffraction.
The influence of the nearest neighbouring shells is determined by the number of various atoms in those shells, but not by their space arrangement.