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Using the finely dispersed material allow forming fine grained structure of ceramic material with high strength characteristics.
This explains the decrease of the strength characteristics of sintered ceramic material made of press-powder series number 2 and 3.
Photograph sat figure 3 show that at a compression pressure of 100 MPa failure of the specimens from the granulate № 3 occurred mainly on the grain boundaries.
Even though to completely eliminate defects such as grain boundaries appeared impossible, we can observe that they are narrow.
At the same time, compacts of the press-powder fraction composition number 3 with a higher density (2.185) compared with blanks from the press-powder number 1 (2.013 g/cm3) after sintering have lower values of strength characteristics.

Characterization of the quality of these batches was performed according to Renault standard 11-02-202/95 in terms of chemical composition and microstructural analysis. [18,19] Of the 20 batches studied, was chosen batch number 27560, which was studied in terms of microstructural analysis.
According to figure 3, we conclude that, the analyzed batch (number 27560) falls in terms of the depth of decarburized layer [19].
Magnification: x 300 Fig. 4 The microstructural analysis: austenitic grain size hereditary (score 7) Attack: Nital 2%.
Magnification: x 100 Figure 4 shows hereditary austenitic grain size, determined in conditions of temperature and time, the finished parts, respectively cementation 950oC, 10 hours.
After that the sample remains still in the oven, in hot air (9500C) for 20 minutes for oxidation of the boundaries of grains, after that the sample is removed from the oven.

Influence of the content of DHPA on properties of polyurethane emulsion and film were analyzed .The results show that obtained emulsion were multivariate distribution in particle size and were spherical particles by measurement of grain size and electron microscopic photo.
In the photographs(a)  particle diameter of latex is larger and very uneven, large gaps between particles, between particles and sticky little apparent phenomenon. photographs (b) particle size of the  latex was smaller, denserparticles and the number of particles per unit volume is significantly increased, compared with the former apparently solid content has increased. which further validates the previous conclusions.
Fig.2 shows that , with the increased use of DHPA emulsion viscosity increased significantly , This is because the amount of the hydrophilic group , the more the greater the number of particles , the smaller the particle size, the average distance between the particles is smaller. 
Influence of the content of DHPA on properties of polyurethane emulsion and film were analyzed .The results show that obtained emulsion were multivariate distribution in particle size and were spherical particles by measurement of grain size and electron microscopic photo.

The paste consistencies are determined, and a number of cement paste specimens is prepared to measure flexural and compressive strengths at 7 and 28 days from casting.
Most importantly, it has been demonstrated that the number of viable bacteria drastically decreases over time as they are not able to survive the crystalline pressures in hardening concrete [8].
A considerable number of previous studies reported significant strength loss with various types of SAP and concentrations [18,19,22].
As the majority of cement was replaced with admixtures, most of the cement grains may have already hydrated at the beginnings of the hardening.
It implies that only a limited amount of unhydrated cement grains were available at later ages and thus no significant further increase in strengths due to internal curing was observed.

Previous research works have proved that Mo is a necessary element to improve the wettability between the ceramic phase and the binder, refine ceramic phase grain size and improve mechanical properties of the cermets [5-9].
It confirms that Mo2C is an effective grain growth inhibitor of TiC-based cermets.
Some TiC grains were split off, other TiC grains were pulled out of the binder and pits were observed.
However, the number of trans-granular fracture TiC grains was less compared to cermet A, and the binder deformation around the pits was developed in the microstructure of cermet C, leading to the improvement of IM.
Lee, Effect of carbide additions on grain growth in TiC-Ni cermets, J.

The Cr layers had a thickness of 0.26 µm and were composed of columnar grains.
Total thickness of the Cr/CrN coating and number of constituent layers was 5.6 µm and 16, respectively.
After annealing at 500°C, the microstructure of the Cr/CrN multilayer coating was characterized by small, nanocrystalline, equiaxed grains.
When epitaxial growth was disturbed on some Ti6Al4V grain (zone 2), competitive growth occurred, and grain size was decreased.
The microstructure of all constituent layers (Cr, CrN, Cr2N) after annealing at 500°C were characterized by small, nanocrystalline equiaxed grains.

The grain sizes were also determined.
Smaller grain size makes it easier to produce very hard and small details such as sharp edge tips [10].
Grain size and product density can be designed by regulation of sintering temperature and duration [7].
The grain size was found to vary from 0.9 to 1,4 µm with average of 1.22 µm.
The data collection rate was automatically set by the controlling program supplied by SETARAM to store the maximum number of data points.

Average grain size of film was calculated to be around 100 nm by using AFM.
It was observed that grain size increases with increase in PZT content in ferrite phase.
The average grain size of the CPT films was found to be bigger than that of CBT films.
Diameters of maximum numbers of particles were approximately 150 nm as shown in the Fig. 1(c-d) for CPT-3 and CBT-3.
AFM micrographs show the homogenous distribution of ceramic grains in the polymer matrix.

However, in spite of these successful attempts to determine internal stresses in growing oxide scales, the mechanisms of strain formation during oxide growth are manifold [17] and not fully understood for a number of metal-oxide systems [16, 18-19].
Throughout the entire oxidation, compressive stresses were found to act in the αAl2O3 grains whereas α-Fe2O3 undergoes tensile stresses.
Because of compatibility of deformation at the interface the α-Al2O3 grains undergo opposite strains along their crystallographic a- and c-directions (εa,Al2O3 < 0 and εc,Al2O3 > 0).
%Al alloy is a composite layer, where the α-Fe2O3 grains are embedded within a matrix of α-Al2O3.
After cooling, the tensile micro-stresses in the α-Fe2O3 grains become even higher than the observed growth stress level, whereas the α-Al2O3 matrix remains under compression.

As an example, the effect of temperature and time on the grain diameter can be seen from Figure 1.
After quenching austenite grain sizes were determined by metallographic means.
Figure1: Evolution of grain size of ALFORM900M depending on time in the experiment.
The aspect ratio of the shown grains correlates with the elongation of the hot strip while finishing.
This high start value and the selected subsequent cooling rate have the purpose to deliver a feasible number and density of precipitates for the moment of slab discharge out of the reheating furnace.