Search results

On the other side, for Exp. 2.4, the big welding speed has a bad influence, because it has an increased number of defects in FSW weld.
The distribution between these materials, in TMAZ zone, has an obvious boundary, with a space between this two materials, and the shape of grains started to be modified along of flow direction.
The grain of aluminum alloy, in the affected area, was refined and the shape of this was modified.

Based on the differences of aluminum metal in the alumina matrix, interfacial bonding between the cermet and the aluminum metal based on the alumina ceramic has four types, such as grain boundary, intergranular, intracrystalline intergranular mixed, and interfacial reaction.
So far, a number of different processes have been developed for the preparation of Al2O3/metal multiphase materials.
Furthermore, as the pressure increased, the preferred orientation of the grain also increased, and this increase resulted in serious local defects that cannot be densified.

Having such a mechanism of ensuring the system stability, it should be taken into account that the surfactant in the suspension composition is likely to be insufficient to stabilize the system, and it is necessary to introduce it in greater numbers (Table 1).
The dependence of the suspension ζ-potential and fine-grained concrete strength on the introduction sequence of the suspension components and the ultrasonic dispersion time № p/p Introduction sequence of the suspension components and the ultrasonic dispersion time ζ- potential [mV] Compressive strength of fine-grained concrete in 28 days of hardening [Mpa] 1 TiO2 + S-3 (8 min USD) +27.4 39.2 2 TiO2 (1 min USD) + S-3 (7 min USD) +27.5 39.3 3 TiO2(3 min USD) + S-3 (5 min USD) -30.1 42.9 4 TiO2(5 min USD) + S-3 (3 min USD) -31.4 43.8 5 TiO2+ 1/2S-3 (4 min USD)+1/2S-3 (4 min USD) -35.6 53.6 6 TiO2(7 min USD) + S-3 (1 min USD) +24.7 32.7 7 S-3 (1 min USD) + TiO2 (7 min USD) -21.1 33.8 8 S-3 (3 min USD) + TiO2 (5 min USD) -25.8 38.2 9 S-3 (5 min USD) + TiO2 (3 min USD) -23.4 36.6 10 S-3 (7 min USD) + TiO2 (1 min USD) -24.8 36.5 The given results are conformed to the strength parameters of fine concrete, molded with the suspension of titanium dioxide of anatase modification.

Recently, a number of methods have been developed to remove organic pollutant from wastewater.
Lattice constant and grain size of ZnO/CuO/NGP composites with various NGP weight percent.
Sample Lattice Constant (Å) Grain Size (nm) ZnO CuO NGP a=b c a b c a=b=c ZnO CuO NGP ZnO/0.1CuO/5 wt% NGP 3.25 5.21 4.60 3.44 5.29 3.55 20 12 23 ZnO/0.1CuO/10 wt% NGP 3.25 5.21 4.69 3.42 5.13 3.61 20 12 24 ZnO/0.1CuO/15 wt% NGP 3.25 5.21 4.60 3.44 5.29 3.61 20 12 25 The degradation of methylene blue as a function of time under irradiation of visible light and of ultrasound separately is plotted in the inset of Fig.1.

Subsequently, the functional surfaces were ground and then gradually polished using diamond paste with grain sizes of 15 µm, 9 µm and 3 µm.
Finally, the samples were polished using diamond paste with a grain size of 1 µm.
The maximum loading force was 104 µN, the number of injections in the same place was 10.

The Freiburg Ethics Commission International approved the study (study code ZD-MA-MS-2013-1, reference number 013/1294).
Test materials were: first, granules with a crystalline phase Ca2KNa(PO4)2 and with a small amorphous portion containing sodium magnesium silicate (Si-CAOP) (porosity 75%, grain size 1000 to 2000 µm; Osseolive™, Curasan AG, Germany) [6].
Second, β-TCP granules (porosity 65%, grain size 700 to 1400 µm, Ceros™; Mathys Inc., Switzerland) [3].

The propagation of cracks along the grain boundaries (GBs) [17] and interaction between the microstructure and corrosion environment [18] in alloys have been studied.
The single crystal includes at total of 112665 atoms and the number of atoms of the twin crystal is 104668.
The twin boundary separate the sample into two parts: one part is the original grain orientation; the other part is the mirror image of this part in the (112) twin plane.

According to the authors, at 1150oC occurred the nucleation of the mullite grains, but with an increase of 200oC in the temperature, an intensification of the peaks of this phase was observed.
The number of phases present in the samples was also determined.
The morphological analysis by scanning electron microscopy revealed nail-shaped crystal agglomerates, characteristics of mullite, besides round grains, typical of corundum.

Cu2O as a solar and photovoltaic promising material has the potential to carry out a large number of studies due to its positive qualities of ease of cost-effectiveness, fabrication, high values of the absorption coefficient at the range of visible light, and finally the low values of the emissions [4-7].
Furthermore, various parameters like a size of grains and the surface shape, as well as the chemistry of the surface of copper oxide nanostructures, impact the optical current values of photo detectors.
Zang, Efficiency enhancement of ZnO/Cu2O solar cells with well oriented and micrometer grain sized Cu2O films, Applied Physics Letters 112.4 (2018): 042106

The total number of electrodes was eight.
Table 2 Physical properties of the graphite with designation EX – 60[7] Density [g.cm-3] Hardness [Shore] Specific Resistance [Ω.m.10-6] Tensile Strength [MPa] Compressive strength [MPa] Typical Grain Size [μm] 1.8 62 13 80 140 10 Properties of copper electrodes.
Table 3 Chemical composition and basic physical properties of copper electrodes with designation EN Cu-ETP (DIN E-Cu 58) [9] Chemical Composition Physical Properties Cu [%] O [%] Pb [%] Density [g.cm3 ] Hardness (Vickers) [HV] Specific Resistance [μΩ.cm] Typical Grain Size [G] min. 99.95 Max. 0.04 Max. 0.05 8.94 40 -70 1678 10 The Experimental Conditions Evaluation method.