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Relatively a few number of thermoplastics can be used for anti friction application.
There are huge number of researches about UHMWPE application as a polymer matrix for anti friction materials [5].
Gasek, Effects of quartz grain size distribution on the structure of porcelain glaze, Ceramics International. 40.8 (2014) 12045-12053

The new technologies are focused on the reduction of the sintering time and effects connected to grain growth because of the long sintering time, which is about 30 minutes and depending on the material.
A number of factors influence the friction, e.g. lubrication, compaction pressure, roughness of the tools and friction between particles [5].
A number of factors influenced the deviations between samples with the same lubricant.

This article with sodium hexametaphosphate as the grinding agent, with reserves of 2.3 billion a hematite in Hebei province as an example to carry out the fine grain of lean hematite grinding efficiency, combined with grinding pulp viscosity, hematite surface potential index and the characteristics of adsorption mechanism of grinding aid are studied.
(serial number: Z201301) Supported by Hebei Province Natural Science Fund project.
(serial number: E2013209308) References [1] Gao Tai, Guo Xiaofei, Yuan Zhitao, etc.

Introduction Titanium aluminide-based alloys (TiAl) have a number of attractive functional properties, such as low density, high strength at elevated temperatures, and enhanced crack resistance.
Tungsten in combination with boron improve the laminar structure of α2-phase (Ti3Al), providing resistance to grain coalescence [5].
The test results of the slab describing the γ-TiAl (111) surface had helped us to choose the number of atomic layers and the value of vacuum gap.

Currently, the total number of airports in operation is over 180, and the density of airport is getting bigger and bigger.
And the number of annual average frost-free days is 154.The picked site is located in the North Temperate Zone with monsoon climate, where the seasons change significantly.
Isolation layer usually has two types, one is the permeable isolation method, namely using coarse grained materials, such as pebble, gravel or sand material, blocking the role of capillary water, so as to achieve the purpose of isolating the water, and the isolation layer thickness should be larger than the height of the capillary water rise, and the minimum thickness should be more than 10 centimeters, which usually is 15 to 20 cm ;The second is impervious isolation method, which uses linoleum, fiber plastic film or tar sands to block moisture channels, stop the groundwater entering into the soil base, thus to decrease the hazards to the soil base.

However, the number of cycles to crack initiation for the ferroelectric BST specimen was about three orders of magnitude smaller than that for the paraelectric specimen in spite of slow crack growth by domain switching.
Ec of PZT-A is 1.5 times higher than that of PZT-B in spite of the similar grain size, piezoelectric properties (ε33T/ε0, k31, and d31), and mechanical properties (Young’s modulus and bending strength) of the ceramics.
On the contrary, the fatigue life was more strongly influenced by the shortening effect of the microcracks in the case of the fatigue failure at a higher number of cycles.

A number of research methods for studying the phase composition allow concluding that the crystallite is an intermetallic compound of variable composition in the Nix-Aly-Fez system, additionally alloyed with Cr when using cathode No. 1.
Chemical elements content at the points of X-ray spectral analysis (Fig. 3) Point numbers Elements content at the points of analysis, at.% Fig.3, a Fig.3, b Al Fe Ni Al Si Cr Fe Ni 1 57.32 1.99 40.69 - 0.38 8.46 48.48 42.68 2 57.29 1.58 41.12 - 0.26 5.49 30.77 63.48 3 57.58 1.54 40.88 - - 4.34 25.03 70.63 4 57.97 1.31 40.72 - 0.29 8.93 52.85 37.93 5 57.71 1.27 41.02 - 0.35 4.64 26.82 68.19 6 57.32 1.85 40.83 - 0.28 4.90 28.85 65.98 7 57.34 1.70 40.96 - - 4.15 25.54 70.32 8 57.76 1.62 40.62 - - 1.81 11.94 86.25 9 57.92 1.48 40.60 3.00 - 1.50 9.35 86.14 10 58.21 1.47 40.32 3.59 - 1.46 8.64 86.32 11 57.86 1.36 40.78 3.45 - 1.43 8.75 86.37 12 57.58 1.27 41.15 0.90 - 1.41 8.82 88.86 13 57.90 1.09 41.01 5.91 - 1.23 7.42 85.45 14 - - - 3.81 - 1.23 7.81 87.16 15 - - - 1.61 - 1.30 8.07 89.02 16 - - - - - 0.83 7.95 91.22 Experiments conducted to study the data of electric spark coatings on heat resistance [18, 19] showed the necessity of using a sublayer.
However, the fine-grained structure of crystallites makes it is impossible to carry out reliable examination of the change in the elemental composition along their length.

Fig.2 EDS patterns of the sample A5 after hydrothermal synthesis Tab.1 Content of Ca and P in the sample A5 after hydrothermal treatment Part number O(%) P (%) Ca (%) Ti (%) Ca and P (%) Ca/P 1 54.25 16.32 27.79 1.64 44.11 1.70 2 58.75 1.76 2.10 37.39 3.86 1.19 Fig.3 shows the XRD patterns of the five samples (A1~A5) for detailed characterizing the microstructure of surface film after HT.
Contrast to the pattern before treatment, these diffraction peaks with diffraction angle (2θ) of 31.9°, 32.3° and 33.2° are identified as hydroxyapatite (Ca5(PO4)3(OH); PDF card number 86-0740).
Meanwhile, it is difficult to grow continued when the HA grain of growth is coarse enough, even if there is no any mechanical restrict force.

The mechanical behavior of crumpling network under the external force F is determined by the shape and volume dependence of network free energy XSU −=Φ , where U is the network internal energy, )(ln US Ω= is the Edwards entropy, )(UΩ is the number of microscopic inherent states of crumpling network corresponding to the given macroscopic energy U , and ( )FSUX ∂∂= / is the "configurational temperature" of crumpling network [3].
Folding mechanics Numerical simulations of forced folding with a coarse-grained model of triangulated self-avoiding surfaces with bending and stretching elasticity under the hydrostatic confinement force uF suggest that δ βδ κ κ             Ψ =      ∂ ∂ = R LL LR U F S u 2 , (3) where R is the characteristic size of folded configuration of square sheet of thickness h and edge size hL >> , Ψ and κ are the two-dimensional Young modulus and the bending rigidity of the sheet, respectively; ( 2 2 )/(/ hLL ∝Ψ= κγ is the dimensionless Föppl-von Kármán number), while δ and β are the scaling exponents [6].

Aggregate is Pebble Creek Trail, grain diameter 5~20 mm, sand is Xi’an Chan River Sand.
Test results are stored in 8 bits gray image, the size of the image reconstruction matrix: 640*640, Size of the image resolution: 0.15mm, each pixel on the image comes with a 12-digit number stored in CT, which contains 4096 order bits.
l Decrease of the temperature T=Tk+1 (k= number of iterations) and go to step2 if.Δεglob>threshld.