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This is due to the tendency of the “larger” particles to occupy the grain boundaries [5].
Stereo image showing topographical features of the F MMHC 15 minute worn surface with a number of fine slip bands (double pointed arrows) in different directions.
Under cyclic deformation, a large number of dislocations gets accumulated and form a series of closely spaced slip bands also known as persistent slip bands (PSB).
Nucleation of microcracks occurs preferentially on the PSBs and during a large number of cycles these microcracks coalesce to form macrocracks which leads to spalling of the material from the interface.

Table 1 Basic producing technology for chromium bronze Serial number Basic treatment processing 1# solution treatment +cold rolling+aging treatment+ cold rolling 2# solution treatment +cold rolling+aging treatment+ cold rolling+cold working The processing for preparing specimens was the same as that described in the previous studies [11].
Table 2 The values of the polarization parameter in 1M NaCl solution Serial number Ecorr(V) Icorr(A/cm2) Ecrit(V) Icrit(A/cm2) Epass(V) Ipass(A/cm2) 1# -0.273 1.242×10-6 0.049 3.219×10-2 0.124 2.633×10-3 2# -0.263 1.56×10-6 0.059 2.925×10-2 0.132 3.186×10-3 (a) (b) Fig. 2.
Table 3 The weight-loss of chromium bronze in NaCl fog (g/m2) Serial number 3 days 6 days 9 days 12 days 1# 2.51 2.70 5.00 9.27 2# 2.73 2.93 5.28 10.95 gap 0.22 0.23 0.28 1.68 Fig. 3.
The influences of plastic deformation and grain size upon corrosion property of decorative copper alloys [J].

The film surface is very smooth and compact, with grain size less than 100 nm.
Our platelet adhesion studies illustrate that the number of adhered platelets is smallest on sample #4, as shown in Fig. 3.
One can see that the number of platelets adhered onto the #4 film was markedly less than that for the others.
Number of platelets adhered on titanium oxide films and on LTIC (incubation time = 120 minutes). 4.

Experiment conditions and methods Raw materials Raw material is metallized pellet by direct reduction process of coal rotary hearth furnace in an enterprise; its metallized rate is about 80% [6], before reduction the raw material is not added with reduced reduction temperature, accelerated iron oxide reduction, sodium and additives promoting iron grain growth.
Table 3 Results of orthogonal experiment Number magnetizing current /A Particle size/μm Feed ore concentration magnetic material percentage /% 1 1.5 +178 1:3 85 2 1.5 178～74 1:5 87 3 1.5 -74 1:7 85 4 2.5 +178 1:7 78 5 2.5 178～74 1:3 72 6 2.5 -74 1:5 81 7 4 +178 1:5 84 8 4 178～74 1:7 82 9 4 -74 1:3 81 Chemically analyze magnetic and non-magnetic materials; respectively calculate iron metallized ratio and recovery in magnetic materials and TiO2 recovery in terms of equation (1)-(3), results of which are shown in Table 4 and Table 5
(1) (2) (3) Table 4 Chemical analysis and calculated results of magnetic materials (%) Number 1 2 3 4 5 6 7 8 9 TFe 79.14 83.28 83.13 86.90 82.16 92.10 77.60 83.14 88.73 TiO2 5.65 5.12 5.34 4.67 5.10 4.22 5.88 5.55 5.23 MFe 61.61 69.95 72.80 70.89 73.99 77.07 66.50 74.00 74.02 Metallized ration 77.8 84.0 87.6 81.6 90.1 83.7 85.7 89.0 83.4 Recovery of Fe 86.5 77.1 80.2 93.9 91.9 96.0 77.9 87.7 92.5 Table 5 Chemical analysis and calculated results of non-magnetic materials (%) Number 1 2 3 4 5 6 7 8 9 TiO2 32.27 34.65 34.22 33.34 33.28 35.75 34.49 33.89 33.58 TFe 30.14 37.22 27.33 25.90 31.48 24.56 31.22 29.34 32.24 TiO2 Recovery 38.5 82.6 72.1 45.8 33.6 58.9 66.4 49.7 55.5 In terms of the range analysis of test results in Table 3, we obtain: (1) The impact of particle size on the magnetic separation effect is the greatest, magnetizing current takes the second place,

It was observed, in all cases, significant changes of the disc bainitic microstructure, i.e: martensitic transformation and a drastic grain-size reduction, on a depth of 4-6 mm.
The thermal responses of the four pad-types are very different in terms of maximal temperatures, number of pins simultaneously in contact, as well as alternation between pins in contact (Fig. 3).
Thus, pad P4 presents the greatest alternation, the lowest number of pins in contact (2 to 4) and the highest maximal temperature.
On the contrary, pad P3 presents no alternation, the highest number of pins in contact (7) and the lowest maximal temperature.

Gravel was continuous grading with grain size between 5mm~31.5mm.
After demoulding and numbering, wire brush was used to roughen both ends of samples, no less than 20mm protective mortar layers added at both ends were necessary.
Table3 Corrosion weightless rates of reinforcing steel bar and carbonation depth of reinforced geopolymer concrete number n(SiO2)/ n(Al2O3) n(Na2O)/ n(Al2O3) n(H2O)/ n(Na2O) Mass standard of steel bar/g Carbonation depth/mm Weight of rusted steel bar/g corrosion weightless rates /% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 3.3 3.5 3.7 3.9 4.1 4.3 4.5 3.9 3.9 3.9 3.9 3.9 3.9 3.9 3.9 3.9 3.9 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.2 0.3 0.4 0.5 0.3 0.3 0.3 0.3 0.3 0.3 31 31 31 31 31 31 31 31 31 31 31 26 28 31 34 36 39 74.1075 72.8925 74.3946 71.1501 75.5154 72.6123 73.8195 74.7510 69.9312 73.4335 76.3806 73.9449 74.7576 72.8967 73.9494 76.6512 72.8883 2.52 2.48 2.50 1.76 1.57 1.28 1.46 3.34 2.22 1.74 1.68 1.58 1.06 1.74 2.09 2.96 3.44 73.8936 72.6892 74.2022 71.0085 75.3881 72.5114 73.7097 74.4904 69.7289 73.3097 76.2978 73.8793 74.6465 72.7590 73.7729 76.4225 72.5320 0.28 0.27 0.25
However, alkalinity of concrete will be reduced with over-growth of n(H2O)/n(Na2O) which not only ruin the base enviroment but also increase the number of pores inside the concrete .

The technique reveals crystal defects that cause strain in the material, including various defect clusters, inclusions and regions with mixed polytype or sub-grain structure.
SiC exists in a large number of polytypes, and it is crucial to maintain the desired polytype, 4H or 6H, during growth.
The wafers in a boule are numbered sequentially with #1 being at the seed end.
Compared to the status of two years ago, the above numbers reflect two-three fold reduction.

The obvious grains from proximal side to remote side indicate the direction of the force transferring, and the shear stress from axial force on this interface results in collapse.
Table 2 The results of tensile-shear testing Number Fm [KN] Diameter of nugget [mm] Shear strength [MPa] Failure mode 1 20.6 5.54 855 Interfacial fracture 2 22.32 6.0 789 Interfacial fracture Average 21.46 5.77 822 --- Result analysis of tensile-shear experiment.
Acknowledgements This work is supported by the Beijing Natural Science Foundation under the Project Number 3122004, and the National Natural Science Foundation of China under the Project Number 11172013, which are gratefully acknowledged.

Table 3 Levels and factors for orthogonal test level binder content molding pressure /N molding time /min 1 1/2 2500 10 2 1/3 3500 20 3 1/4 4500 30 3) Analysis of test results Table 4 Scheme of experiments to prepare fiberboard and analysis of results number binder content molding pressure/N molding time/min bulk density /kg/m3 1 1/2 2500 10 519 2 1/2 3500 20 583 3 1/2 4500 30 615 4 1/3 2500 20 451 5 1/3 3500 30 508 6 1/3 4500 10 516 7 1/4 2500 30 398 8 1/4 3500 10 468 9 1/4 4500 20 485 level 1 572 456 501 — level 2 491 519 506 — level 3 450 538 507 — Limit deviation 122 82 6 — It can be seen from Table 4, sodium silicate content is the most important influence for volume density of slag wool fiberboard, molding pressure follows and molding time of the minimum factor.
Increasing the volume weight and limit the gas phase in low levels are making fiber more close-grained and increase the compressive strength of fiberboard.
Table 5 Compression strength of different fiberboard number binder content/g volume weight /kg/m3 compressive strength /MPa 1 1000 653 0.36 2 500 570 0.31 3 250 475 0.28 3) The influence of sodium silicate binder to water absorbability It can be seen from Table 6: blast furnace slag wool fiberboard per unit volume water absorption is reduced by the increasing of the sodium silicate addition, but the volume water absorption is more than 50 percent that fails for satisfaction the water requirements.
Table 6 Results of fiberboard water absorbability number binder /g volume water absorption /% unit volume water absorption /kg/m3 1 1000 46.1 461 2 500 54.8 548 3 250 71.1 711 The waterproof performance is a major factor restricting fiberboard to use in external wall insulation.

This limits the growth of many plants, the species number less
Because of the artificially cultivated in great quantities, Bashang grassland is vegetation disprotection, wind speed, with moisture in decline, the increase in the number of sand in the evaporation capacity increased, that result soil desertification and basification.
To follow the law of vegetation succession, and gradually achieve conversion of returning the grain plots to husbandry.
The number of hebei bashang grassland plant community donggou gradient analysis [J].