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The product is a solid layer of crystalline zinc tetrahydrogen phosphate in the hopeite modification (flaky grain).
For grinders A and B, rotation speed, sampling intervals, number of samples taken during milling, grinding cell volume and grinding medium.
Mill Name Rotation Speed [RPM] Sampling Intervals [s] Number of Samples Grinding Cell Vol.
Despite the favorable grain dimensions of the ZP-10 material, it was not used in further analysis due to its instability (there was a redistribution of grains) during the measurement of the particle distribution.
Moreover, it is vital to repeat the jet milling measurements with a greater number of samples to obtain statistically significant results.

In order to study the influence of stress ratio and WC grain size, the characteristics of fatigue crack growth were investigated in WC-Co cemented carbides with two different grain sizes of 3 and 6µm.
The crack propagation rate data obtained for the WC grain size are presented in Fig. 3.
The crack propagation rate of the 22Co6 was faster than the result of the 22Co3, and it has been understood that this material depends on WC grain size.
The ε '-Co amount increases with R and WC grain size and more ε '-Co are created in high ΔK.
The deformation cannot take place because the number of slip systems is limited for ε '-Co compared with γ -Co and a crack is formed in the Co phase.

The results show that the microstructure is compact and the grains of the matrix is small in the composite layer.
The fabricated material has compact structure, small grains simple process and lower manufacturing cost which is suitable for mass-produce [5-7].
The cycle number of thermal shock was 60 times.
It is compact and possesses fine grains, without any shrinkage cavity and shrinkage porosity defect.
The microstructure of the composite was compact, the grains of the matrix were fine, and the macro-interface between the substrate and composite transit naturally, and the micro-interface of the Al2O3 particles and matrix was very dense

However, once the stress became large enough to cause severe grain fall off, micro-crackings and surface flaws, the mechanical properties of dental 3Y-TZP started to drop drastically.
A number of bars（30 mm × 5 mm × 3 mm）and blocks (10 mm × 10 mm × 5 mm) were cut from these pre-sintered blanks.
The effect of sintering temperature on the low temperature aging behavior of 3Y-TZP can be explained by the sintering temperature dependent grain size and Y3+ distribution [8-12].
However, once the stress induced by the transformation is large enough to cause grain fall off, severe micro-crackings and surface flaws, the strength of 3Y-TZP starts to drop drastically.
However, once the stress is large enough to cause severe grain fall off, micro-crackings and surface flaws, the mechanical properties of 3Y-TZP starts to drop drastically.

For both alloys, a reduction of the number of cavities with increasing strain was for instance measured in a relatively large strain interval before fracture confirming the role of cavity coalescence [5].
Experiments The studied magnesium alloy was an AZ31 alloy (Mg-3Al-1Zn, wt.%), received as a 2 mm thick hot rolled sheet, with a mean recrystallized grain size of about 10 mm.
Such complex shapes of strain induced cavities are typical of situations where grain boundary sliding is the predominant mechanism of deformation as it is expected in superplasticity.
Fig 1: 3D imaging of damage growth during deformation of the alloy (strains are respectively 0.00, 0.44, 0.75 and 1.10) Fig. 2: Variation with macroscopic strain of the number of cavities per mm3 Figure 2 displays the variation with strain (here between 0.4 and 1.1) of the number of cavities per mm3.
A continuous increase of the number of cavities is detected and after a strain close to 1.0, values of about 8000 cavities per mm3 are measured.

Therefore, in recent years more and more attentions have been paid to improve the joining strength between the grains and the tool substrate.
In the 1990’s, several attempts have been made to improve the bonding strength at the interface between grit and metal bond, and diamond brazing technologies are know as a good way to improve the bonding strength while realizing optimum grain distribution , and maintaining a high grain protrusion [2-4].
However, for core drill NIC, the feed force slightly decreases along with an increase of the number of holes in the final stages of the drilling test.
In those figure, N is number of holes.
Escalation of the wear flat area was observed with increase of the number of holes.

FESEM images showed spherical shaped nano-sized grains and formation of micro pores.
The diffraction patterns were matched with JCPDS card number 79-0208, and cell parameters were determined.
The image shows agglomerated grains, densely packed structure.
A decrease in the grain size could be observed for all the AZO films, when compared to ZnO film.
This maximum reflectance could be attributed to the uniform grain size and smooth surface as evident from the SEM image.

Ceramic refractory materials initially contain a multitude of defects such as voids, microcracks, grain boundaries etc.
To incorporate local microstructural features, mesoscale cell models with linear elastic matrix properties are introduced, generally containing voids, cracks or grain boundaries.
(3) The potential of the defect phase depends on the damage variable representing void or crack growth, grain boundary delamination or other irreversible processes.
It should be noted that damage initiates within the material, propagating towards the surface with increasing number of load cycles.

Crystallization phase volume is about 40 %, and the grain size is about 11-15 nm.
According to Herzer’s random anisotropy model [28], the enhancement of magnetic anisotropy is mainly related to the size of grain after crystallization, the larger the grain size, the stronger the magnetic anisotropy.
So the magnetic anisotropy enhancement of the alloys are not caused by the growth of grain size.
Yamauchi, New Fe-based soft magnetic alloys composed of ultrafine grain structure, J.
Herzer, Grain structure and magnetism of nanocrystalline ferromagnets, IEEE Trans.

Intersections of tracks 200 X Fig. 5 and Fig. 6 show how the grains growing parallel to each other on the track surface.
Each grain consists of a number of subgrains slightly different in both thicknesses and orientation.
In all cases the grain boundaries are perpendicular to the solidification front.
Two grains growing parallel to each other on the track surface, 500 X Fig. 6.
Grains consists of a number of subgrains, 500 X Fig. 7.