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Fig. 9 EDS spectrum of the worn surface Fig.10 EDS spectrum of the worn surface lubricated lubricated with nano-BN additive (45 steel) with nano-BN additive (Ni-W-P coating) Table 2 EDS semi-quantitative analysis Table 3 EDS semi-quantitative analysis (45 steel) (Ni-W-P coating) Element Wt% B 14.35 N 1.5 Fe 83.42 P 0.49 C 0.23 When the diameter of the particles reduces to nano level, it not only causes the number of atoms at the surfaces increases rapidly, but also causes the surface area and surface energy of the nano particles to increase rapidly.
Under local high temperature generated by the friction, the microcrystal elementary substance forms a melting alloying film, namely "hard repair" with wear compensation effect on the surface of the friction pair; besides, the restoring action of the tiny metal grains generated at the friction process is used to restore the nano inorganic compound to microcrystal elemental substance.

In both materials molybdenum carbides form in the ferritic grain boundaries. 2.2.
After each test, the peak tensile stress in every cycle is extracted and plotted against the number of cycles.

Cracks are also formed in the 6M sample, but in significantly smaller numbers and they somehow disappear within the formed binder.
Undissolved glass grains are visible (light grey) within the inorganic polymer matrix (dark grey).

It's primarily implemented in Java, suited to a number of environments including J2EE.
It gives fine-grained permissions which can be used to partition data, or to control access for "non power users" which can limit the damage they can do.

At the same time, metallurgical dust promotes the formation of ettringite not on the surface of cement grains, but in aquatic medium, which prevents body stress and the destruction of the composite [12].
In addition, peaks corresponding to SO42- ions are “smeared”, which leads to the formation of silicate groups (SiO and Si) having the same wave number range.

Figure 1 – Crystal microelectronic sensor design: 1 – platinum meander heater; 2 – interdigital electrodes of the sensor element; 3 – gas sensitive film SnO2; 4 – pads The gas sensor layer is a SnO2 film with the addition of 1 % Si with a thickness of 0.22 μm, characterized by a small polycrystal grain size of about 5 nm and characterized by an increased gas sensitivity.
Resistive-type gas sensors based on metal oxide semiconductors (tin dioxide, zinc oxide) have a number of advantages compared to other gas sensors: they allow detecting the presence of many inorganic and organic gases in the air, have a short response time and high sensitivity.

It was found that the best conditions obtained at the activation temperature 8000C and 120 minutes of activation because these parameters provide the highest iodine number of 823 mg / g and a BET surface area of ​​719 m2 / g.
Fan, Grain-based activated carbons for natural gas storage, Bioresource Technology. 101 (2010) 1983-1991

In order to obtain small grains size and, thus, good toughness and high tensile strength, a combination of these methods should be made [5].
By mounting the trailing slide (11), a Tandem welding scheme, with two up to six electrical arcs and identical number of wires (20, 21), can be performed in the same welding pool or in different melted pools.

The composition of tested sulfur-containing concretes Series number of the samples-prisms Concrete composition (by weight) Water-cement ratio Cement consumption per 1m3 of concrete, kg 1.
Conclusion The implemented research allowed directional planning of the production of sulfur-containing arbolit with the variable strength as the function of grain size fraction or the fiber length of the organic filling aggregate.

The number of particles definitely increased with increasing precursor concentration.
Lavernia, On the analysis of grain size in bulk nanocrystalline materials via x-ray diffraction, Metall.