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Based on a large number of experiments, the abrasive belt grinding process parameters of Zr-4 alloy tube has been determined or refined.
By a large number of abrasive belt grinding experiment, the author get Zr-4 alloy tube grinding process parameters as shown in Table 2.
The process parameters range of Zr-4 alloy’s abrasive belt grinding Abrasive belt model Abrasive belt grain size Abrasive belt material Abrasive belt line speed (m / s) Workpiece feed speed （mm/min） The wheelhead cylinder pressure （Mpa） 461F P80 silicon carbide 12—25 500—3000 0.08—0.15 Table 2.
The reasonable process parameters of Zr-4 alloy’s abrasive belt grinding Abrasive belt model Abrasive belt grain size Abrasive belt material Abrasive belt line speed (m / s) Workpiece feed speed （mm/min） The wheelhead cylinder pressure （Mpa） 461F P80 silicon carbide 18 1000 0.12 2.3.1 The influence between workpiece feed speed Vw and the grinding amount ΔR As shown in Fig. 5, the workpiece’s feed rate has a greater impact on the amount of single-stroke grinding.1) A single stroke grinding amount is reduced with the increase of workpiece speed.

Three kinds of hydrogen storage materials were prepared by mall milling for 3 h, denoted by Mg0.65C0.35, Mg0.65C0.3Mo0.05, Mg0.65C0.3Ni0.05, respectively, where the numbers mean the proportion of each raw material.
It was found that the crystallitic carbon from anthracite had a good scattered ability and a proper lubricity for the decrease of the magnesium grain size[14].
Along with the decrease of the magnesium grain size, the magnesium is hydrogenated to forming magnesium hydride as shown in Fig. 2.
While at 350 oC that is around the peak dehydrogenation temperature, the hydrogen desorption rate of MgH2 is so fast that a number of hydrogen atoms combine into hydrogen molecules and deviate from the material surface so as to lose the reactivity to react with CS2.

/min.] 420 Carrier gas (N2) flow rate [lit/min.] 20 Powder feed rate [g/min.] 40 Coating distance[mm] 280 Gun traveler speed [mm/sec] 10 Specimen rotating linear speed [mm/sec] 600 Number of passes 28 Vickers indentation fracture toughness measurements were conducted on the cross section of the coatings using a range of loads from 3kgf to 20kgf applied for 1 to 10 minutes.
These powders also have fine WC grains, which are in micron range.
In this schematic, each phase is represented by a different pictogram in which A is WC, N is Nano-crystalline matrix, B is WC-W2C crystallites, D is cobalt dendrites surrounding WC grains, and C is Splat boundaries.
The analysis of the microstructure confirmed that the number of retained WC particles was high with small quantities of W2C particles.

Several observations can be made: • Introduction of Ti in the steel increased oxidation kinetics, leading to thicker scales after 150 and 300 cycles compared to the reference alloy, due to Ti4+ doping effect in chromia as already proposed [7], • Decreasing adhesion with number of cycles was clearly evidenced on the Ti-containing material, • Internal precipitation of TiO2 along steel grain boundaries was detected as already observed in the case of isothermal oxidation [7] and was probably responsible for enhanced adhesion, blocking the propagation of the interfacial crack.
Grain boundary precipitation of Nb-rich phases was detected in the ferritic steel, as also observed in isothermal oxidation tests.
Comparison between values obtained with these tests were, except in a minor number of cases, in the same range, although the tests do not work in the same mechanical conditions and the derivation of adhesion values are not based on the same assumptions.

Cement paste volume is to be higher than volume of voids for the large aggregate grains to be absolutely covered by the cement paste, when making the SCC composition enabling flowability increase therewith while reducing particle friction [5].
Experimental Research To analyze possibilities in getting SCC of В25, В30, В35, В40, В45 grades, SUE “BashNIIstroi” Institute laboratory in 2015-2016 made a number of experiments with raw materials of Bashkortostan for SCC proportioning, with the results thereof being used when concreting cast-in-situ structures in several facilities of Ufa.
The following materials were used as the original ones for SCC making: - CEM I 52,5N Portland cement (by branch of “HeidelbergCement RUS”, LLC in Sterlitamak); - 5-10mm cubiform crushed stone from carbonate rocks from Minyar pit; - natural sand with 2.5-2.8 fineness modulus (“coarse” sand group), of dense-graded particle size (all grain sizes) and about 1.5% of silt and clay particles; - filler: MP-1 mineral powder by GOST Р 52129-2003 [6]; - polycarboxylate-based superplasticizer Master Glenium SKY 591 by BASF.
The self-consolidating concrete mixes are likely to be widely applied in the construction of the republic due to increase of number of storeys and complication of cast-in-situ forms.

In the process of cooling after rolling, secondary cementite can be easily precipitated preferentially at austenite grain boundaries in SWRH82B wire rods, and in severe cases, closed cementite network can be formed.
In process of drawing, cementite network will greatly weaken binding force between grains, and continuity of matrix is wrecked.
Table 2 Frequency of occurrence of cementite network in the experimental steel (wt. %) Samples / Numbers Cementite network / % 100 94 Table 3 Frequency of martensite appearance in the experimental steel (wt. %) Samples / Numbers 0.5-1(level)[%] 1.5-2(level)[%] 2.5-3(level)[%] 3.5-4(level)[%] 0.5-4(level)[%] 100 19.4 26.4 17.2 14.3 77.3 3 2 1 Fig. 1 Cementite network and martensite structure in central of the sample.

A substantial number of researchers have reviewed the improvement ways of properties of recycled concrete aggregates.
The properties of concrete with treated RBA will however also be influenced by other parameters, especially by the character of grain sur-face after treatment and by properties of interfacial transition zone.
Sicakova, Methods of strengthening the grains of recycled aggregates, In: IOP Conf.
Akrami, Performance of concrete produced with crushed bricks as the coarse and fine aggregate, In IAEG 2006, The Geological Society of London: London, UK, 2006; p. 10, paper number 616.

The compressive strength (product Toni tecknik Germany with device number PR41004).
The flexural strength (number of products, Toni tecknik Germany (RB421002).
With the addition of titanium dioxide nanoparticles, properties of samples increase, but the effect of TiO2 nanoparticles in SSCF are more because depends to expansion of the surface and the crystal structure of titanium dioxide nanoparticles and grain size of the lesions.
[19]ISO 8486-1: 1996, Bonded abrasives - Determination and designation of grain size distribution - Part 1: Macrogrits F4 to F220

In the cross-section HR-TEM image three layers are clearly visible: a SiO2 layer in direct contact with the Si substrate, a bottom 8 nm Pr-oxide based layer having a different contrast than the SiO2 layer and no long range order, and well defined Pr2O3 crystalline grains.
The shift value can be used to quantify the number of fixed or trapped charges (Nf, Not [cm -2]) in the dielectric films using the equation: eA VC N ∆ = where C is the accumulation capacitance, e is the electron charge, A is the area of the gate and ∆V is the flat band shift.
The number of trapped (negative) charges (Not [cm -2]) has been evaluated from the hysteresis observed in the C-V curve and it is quantified as Not = 1.6×1011 cm -2.
These defects can be mainly referred as bulk defects and appear not to be related to morphological defects such as the presence of grain boundaries.

On the other hand, C2S-CZ system (MSV) is characterized by the TC bearing a great number of the dispersive micro-cracks which should be Table 1 Coating processing and reheat treatment for Mar-M247 (MB) and various TBC systems.
Under the static creep loading, it was confirmed that typical creep rupture is caused of TBC systems according to typical creep failure manner; by the nucleation and coalescence of the grain boundary cracks in the alloy substrate interior by the manner essentially similar to the MB specimen without TBC.
the TC surface of such an interfacial crack by the coalescence with a number of dispersive TC cracks.
Conclusions (1) Under static creep loading, all kinds of TBC systems exhibited the typical creep rupture behavior regardless of the environmental condition, with the manner of the nucleation and coalescence of mainly the grain boundary cracks in the alloy substrate interior.