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Reported nitrogen diffusion profiles are analyzed to deduce the basic properties of the N2 / N1 community of nitrogen dimers and monomers: the species diffusivities, the equilibrium dissociation constant and the dissociation time of dimers.
- Dislocation locking, and thus mechanical strengthening of the material [5]
By bringing these two sources together, and using some additional data, the basic properties of the N1 / N2 system can be deduced.
An uncertainty in the dissociation constant is somewhat larger, probably by a factor of 4 at the same T.
The diffusivity of the dimeric species N2 was concluded to be too low to affect nitrogen diffusion profiles.

We can also analyze the influence law of cutting force, heat cutting and the surface quality for all the factors.
The model of geometric criterion is simple, but it is not established by physical condition of chips separation and does not have physical properties.
Through physical standards, the finite element simulation can truly reflect mechanics and physical properties of the workpiece and approach to the real situations.
In the simulation of chips formation, especially modeling in chips area, we need to consider the properties of materials.
It belongs to the normal phenomenon and do not affect the authenticity of simulation result.

The intensification of environmental policy, the adoption of new international standards in the field of environmental protection and waste recycling, the corresponding changes in public consciousness are becoming one of the main factors in the reuse of various waste for the needs of road construction.
The chemical properties and phase-mineralogical composition of ash and slag waste are mainly determined by the composition of the mineral matter of solid fuel and the changes that it undergoes during high-temperature processing in TPP boilers.
The composition and properties of ash and slag depend on the composition of the mineral part of the fuel, the type of preparation system, the combustion mode, the method of collecting and removing, the place of collecting the ash in the collecting devices or at the ash dump.
Chemical and mineral-phase compositions, structure and properties of ash and slag waste depend on the composition of the mineral part of the fuel, its calorific value, combustion mode, method of capturing and removing them, and the place of extraction from dumps.
Physical and mechanical indicators correspond to the following values: slag product content - 24%, the amount of material with a particle size of up to 0.1 mm - 91%; the average value of the density of the dry ash and slag mixture in the loose state is 1.35 g/cm3; in dense - 1.45 g/cm3; the density of the mineral part is 2.3 g/cm3.

Introduction Carbon nanotubes/nanofibers (CNTs/CNFs) have been attracting a great deal of attention for their unique mechanical, electronic, transport, thermal, and vibrational properties [1].
These polarized functional groups could be interacted with H2O molecules that dramatically change the CNTs' surface property from hydrophobic to hydrophilic.
The O/C ratios were obtained by integrating the core level peak area of O(1s) and C(1s), corrected by atomic sensitivity factors based on the empirical peak-area values [16,17] modified for the system's transmission function, as shown in Fig. 1.
These images tell us that the mechanisms of the binding-metal oxides are affected not only by the oxidation level, but also by the ion-adsorption behavior on the open-ended nanotubes.
Popov, Carbon nanotubes: properties and application, Mater.

In the membrane surface is easy to cause pitting of sulfide products consists of the following eight factors: 1) volume of CO2/H2S > 200. 2) the content of Cl- more than 5000 PPM. 3) have taken place in the steel surface corrosion, especially contact Cl- such as completion fluid, or acidizing treatment with hydrochloric acid. 4) acidification returns fluid caused by the low pH value. 5) lack of relievers or betting relievers frequency is low. 6) corrosive fluids. 7) O2 on bets chemicals or pigging to enter system. 8) test equipment destroyed sulfide product membrane.
Improved low Cr steel L Pigliacampo et al. developed the optimization of low carbon steel 3Cr, to fill in the conventional carbon steel and low alloy steel (carbon and low alloy steels, CLASs) and corrosion resistant alloy steel (corrosion resistant alloys, CRAs), the gap between this kind of material than the CLASs has a higher corrosion resistance, with enough mechanical properties at the same time, so low carbon 3Cr optimization will be the choice of appropriate completion homework.
The material has the following advantages: 1) improve the CO2 corrosion resistant properties, compared with the conventional carbon steel and low alloy steel service life is longer, can extend the well repair period 2) during the completion operations, alternative (sweet) in a separate CO2 corrosion conditions commonly used carbon steel and low alloy steel 3) under the condition of mildly corrosive environment, compared with 13Cr and other corrosion resistant alloy, can recover the operating costs as soon as possible 4) to ensure safety in production, not premature well repair 5) to improve the salvage operation condition.
Under the condition of the same environment, the Super 13Cr martensitic stainless steel has higher resistance for general corrosion and local corrosion than the 13 cr stainless steel, in CO2 and high temperature (about 180 DHS C), and at room temperature and H2S partial pressure under the condition of 0.001 0.003 MPa is almost not affected by the influence of sulfide stress cracking.
Welded Joints Properties Of Super 13Cr Martensitic Stainless Steel Considering Applicability To Field Fabrication[C]//NACE Corrosion2002, paper No.02043, 2002

The study on the size and structure of deoxidation products from the sub-rapid solidification will be of great significant in promoting the mechanical properties of the strip continuous casting steels.
The reason is that when the size of most particles is reduced to nanometer, their physical properties will be changed significantly, such as the melting point, which would degrade as a result of nano-effect.
If the viscosity is the primary influence factor for amorphous solids from liquids, the hardening rate could be surmise as the determinant for the mean size of amorphous solids.
The solubility product of silicon and oxygen in steel mainly affects the generate timing SiO2 when the solidification rate is certain. 3.

Some of them may be useful as novel bioactive factors for triggering the activity extracellular matrix (ECM)-secreting cells [7].
For collagen-based materials and chitosan-based materials the mechanical properties were studied.
The results showed that these properties are suitable for biomedical applications.
These two combined factors (small groups, dispersion in several research themes and expertises) make the biomineralization scientific community rather sparse, and not truly coordinated.
Kozlowska, Properties and modification of porous 3-D collagen/ hydroxyapatite composites, Int.

Silicon carbide has the right properties and the same native oxide as Si.
It has good semiconductor properties (Table 1).
Table 1 Key semiconductor properties of Si and the 4H polytype of SiC.
Several wide-gap semiconductors have virtually all the necessary properties, but lack a suitable dielectric for the fabrication of MOSFETs.
Overall, although there are several factors that favor an abrupt interface (e.g., it is energetically favorable to "oxidize" suboxide bonds first, emitted Si and C atoms do not enter the SiC side, and arriving O atoms do not enter the SiC side) there are two main factors that cause trouble: a) the disruption of the SiC ring structure by the emission of C and Si atoms and b) the emitted C atoms, some of which are likely to be stuck in the interface region.

Owing to the complexity of the equations, the values of the factor are available only in tabular or graphical form.
It is known that the wire drawing process depends on three main parameters: the wire material properties, the die geometry (such as die angle and reduction ratio) and the process conditions (such as friction at the interface between the die and the wire).
Table 1 Comparison between the mechanical characteristics of Machine 1 and Machine 2.
· The different elongation ratios of the machines affect the homogeneity of the deformation.
Indeed, it is necessary that the mechanical elongation ratio of the machine remains lower than the elongation ratio of the wire.

Diesel Engine Fault Diagnosis Based on Rough Sets Hongxia Pan and Jingyi Tian School of Mechanical Engineering and Automation, North University of China, Xueyuan Road 3030051 Taiyuan, China panhx1015@163.com Keywords: Rough Sets, ROSETTA, Wavelet Packets De-Noising, Neural Network, Fault Diagnosis Abstract.
The cylinder head vibration signal is affected by many factors, respond waveform is very complex, both cycle characteristics, and non-stationary and some impact properties.
Vibration signal through the 4 layer wavelet packet transform, time domain and frequency domain analysis, the extraction of 16 change is obvious characteristic values, respectively is: RMS, kurtosis, maximum, kurtosis, peak index, pulse index, margin index, coefficient of sleekness, kurtosis index, eight order moment coefficient, sixteen order moment coefficient, six order moment, peak, spectral variance, harmonic factor, spectral moment about the origin, respectively ( T1, T2, ... , T16 ) said.
Visible, after attribute reduction feature vectors from 16 down to 10, respectively, the mean square value, maximum value, kurtosis, peak index, kurtosis index, eight order, six order moment coefficient of moment, peak, power spectrum variance, harmonic factor, then the value reduction.