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Introduction Iron aluminides represent an intriguing class of new materials: they offer a good combination of mechanical properties, specific weight/strength ratio, corrosion and oxidation resistance and low raw material cost [1-3], which makes them potential candidates for the substitution of stainless steel in applications at moderate to high temperatures.
The development of new, more ductile Fe-Al alloys depends on a thorough understanding of their properties, implicating a better comprehension of the properties and behavior of defect in these materials.
b) material after self-decomposition process and milling c) material after self-decomposition process The Fe-Al (Fe-rich) samples were obtained from Armco iron, aluminum of 99,99% purity, and a small amount of other additives added in order to improve the thermal and mechanical properties of alloys.
A comparison of point defects concentrations in materials obtained by various methods (melting, self-decomposition and milling) indicates a complexity of the factors influencing the defect structure of the materials.
Munroe (1996) Processing, Properties and Applications Proceedings of ASM, 96 [3] J.L.

Due to high consumer properties, low production and transportation costs, a wide range of applications in many areas of human activity, natural gas occupies a special place in the fuel and energy and raw materials base.
Studying the processes of burning is highly relevant in our days, in particular due to the fact that at burning harmful substances (NO, S, CO) are resolved, which disastrously affect human body [2].
The desire to burn gas with an excess air factor α close to 1.0 is due to the goal of providing the most economical and efficient operation of a gas-burning plant.
(1) winter period of the year with an excess air factor α < 1 and gas pressure in the gas distribution network of less than 1.2 kPa: СН4 + 1.5О2 + 1.5 ∙ 3.76N2 = СО + 2Н2О + 5.64N2
(2) Theoretical analysis of equations (1-2) gives grounds to state that the results of the combustion process depend on gas pressure and the excess air factor.

The humidity of the powder not only affects the charge of the powder, but also affects the dispersion degree of the powder. 1 Introduction The dispersion of powder is closely related to the powder production and utilization.
Although the surface modification enables the ultrafine particles to anti-aggregation perpetually, the original properties of particles have also been changed at the same time.
This makes the value of the dispersion degree affected by operation factors.
This result tells us the space between electrodes is an important factor when you design a dispersion device.
The moisture of powder is the major effect factor to the electrostatic dispersion.

The advanced machinery frequently faces heating problems due to friction or slow heat dissipated properties of conventional fluids, which results in device failure.
Physical Properties of the MNF: FC-72 and 90G.
Properties FC-72 (Li et al. [17]) 90 G (Tangthieng et al. [18]) Base Fluids Fluorocarbon (Perfluorohexane C6F14) Hydrocarbon Density (kg/ m3 ) 1.680×103 0.972×103 Coefficient of Thermal Expansion (1/ K) 1.6×10-3 9.0×10-4 Dynamical Viscosity in Zero Magnetic Field (kg/ ms) 6.4×10-4 15.0×10-3 Thermal diffusivity (m2/s) 3.084×10-8 8.700×10-8 Prandtl number 12.3 176.4 Mathematical Modelling The factors affecting viscous fluids are volume fraction, temperature, depth, pressure, density, etc.
The mathematical expression of the impact on uniform viscosity μ∞ is expressed as [19, 20], μ(T, z)=μ∞1-αz1+αT-T∞ , (1) where α≥0 is the affecting factor.
International Journal of Mechanical Sciences, 90 (2015) 246-250

Effect of Different Hole-Making Technology on Fatigue Properties of Directionally Solidified Alloy IC10 Y.
However, the existence of film-cooling hole not only destroys the integrity of the turbine blade structure, but also seriously damages the strength and life of the turbine blade. [4]The irregular shape of film-cooling hole and other factors also seriously affect the surface quality of film holes, which is a thorny problem in the process of hole-making.
Chen [5] studied the effect of the roundness of film-cooling hole on fatigue properties.
Finally, the influence of hole taper on the mechanical properties of components is analyzed by finite element model, and the surface quality of film holes is evaluated to obtain the possible damage to blade structure. 2.
Model and Loading In order to further evaluate the effect of the shape of the real film-cooling hole on the mechanical properties of the component, two finite element models with different tapers of the hole were established for comparative analysis.

Mechanical properties of rock and soil media are very complex with many factors on stress and deformation such as rock and soil structure, porosity, density, stress history, load features, pore water and time effect and so on.
It is almost impossible to obtain theoretical solution in so many factors.
It is common in foundation engineering, slope engineering and underground engineering, so it is necessary to study the properties of unsaturated soils.
Changes in the physical properties of unsaturated soil will cause the variation of the shear strength of soil.
Firstly, the entity model should reflect actual outer condition, properly treat boundary conditions and external loads, and consider the influence of various factors, in order to ensure the correct model.

The β-Ti alloys exhibit excellent shape memory effect and superelastic properties.
The interstitial atoms in the alloys have important effect on their physical and mechanical properties.
The small elements such us C,N,O and H in metals have important influences on mechanical, physical and chemical properties [6-8].
Yashiro, Design and mechanical properties of new β type titanium alloys for implant materials, Mater.
Snoek, Effect of small quantities of carbon and nitrogen on the elastic and plastic properties of iron, Physica, 8(1941)711-733

It was found that the total acid concentration is still the dominant factor over the gradient design in affecting the degradation and subsequently the release profiles.
However, the starting mechanical properties are seriously compromised in this method.
There are two factors involved in this; the acid gradient and the total acid concentration.
The thermal properties were monitored using DSC to confirm this and Table 2 shows the summarized thermal properties of the films.
Thermal properties of drug loaded samples.

The factors effecting alkyl-capping rate were discussed.
In China, the researches on alkyl-end-capped polyethers have been relatively insufficiency, and the existed reports [7] have been mainly focused on the synthesis and properties of block copolymers instead of random copolymers of EO and PO.
In this article the preparation of double alkyl EO/PO random polyether was reported and the effects of factors on alkyl-capping rate were discussed.
The first step is crucial to the second step, it can affect the end-capping rate.
Table3 shows that dripping speed for alkylation agents affect the end-capping rate with different degrees.

To determine the welding parameters using Artificial Intelligence (AI) technologies, one must consider many factors including productivity, thermal input, defect formation, and process robustness.
The size and shape of bead geometry and occurrence of various weld defects such as incomplete penetration and undercut are also affected by welding parameters1.
Several mathematical models have been studied on to control welding quality, productivity, micro-structure and weld properties in arc welding processes2-8.
Recently, expert systems in arc welding process have been developed in order to improve the decision-making process within the different factors required in the welding technology.
This system might help the welder to select the optimal process parameters for different material properties, and to give users alternatives on how to control the welding quality.