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The TiO2 nanopowder obtained were characterized using X-ray diffraction (XRD), Raman spectroscopy and field emission scanning electron microscopy (FESEM) for their structural properties.
Cui et al prepared TiO2 in nanometer size by gas condensation method and studied its mechanical properties [6].
In this paper, TiO2 nanopowder was synthesized by sol gel grinding method and the effect of TiO2 precursor concentration on its structural properties were discussed.
The results obtained are agreed with the factor group analysis of anatase phase [22].
The FESEM micrographs show the precursor concentrations affect the surface morphology of TiO2 nanopowder where the higher concentration give highly aggregates with uneven particle shapes.

One factor affecting a machine’s life is friction between components resulting in wear in component surface.
In his research, Wang [5] states that rolling contact fatigue (RCF) of railway is an important factor affecting safety, maintenance, and service of rail track.
The friction occurring between wheel and railway affects rail performance and work system of its driving mechanism.
It indicates that the effectiveness of graphite splinters decreases, as graphite polishing decreases so that the number of graphite grains penetrating into the fissures of wheel specimen surface also decreases, thereby affecting the wheel’s wear level.
Hao, Tribological properties of solid lubricants (graphite, h-BN) for Cu-based P/M friction composites, Tribology International, 22 April (2008)

Introduction Many studies have been devoted to give a good knowledge of the physical properties of polymeric materials often associated with other environmental stresses [1-3].Under service conditions, these materials are exposed to electrical fields, below the critical level required for rapid failure via an avalanche process.
When the deformation is large, the polymer chains change their configuration, but the electric polarization may be negligibly affected by the large deformation.
This can be done by minimizing the so called correlation factor, C, defined as (7) G and H are the grey scale light intensities corresponding to all the points in the subset, S.
Mayoux, « On the Electrical Properties of Poly (ethylene naphthalate 2,6-dicarboxylate) Biaxially-oriented Films », Polymer International, Vol.46, (1998), pp. 72-76
Schönhals, « Dielectric and dynamic mechanical relaxation behavior of poly(ethylene 2-6 naphthalene dicarboxylate).

Laser melting technology can improve the properties of coating by heating the surface of the workpiece and melting metallic powders together to form uniform structure with a laser beam.
We expect that the laser melted layer will be more homogeneous and dense and have excellent properties.
Fan: Study of Microstructure and Properties of HVOF-CoNiCrWC Coatings by Las -er Solidification [J] .Equipment Manufacturing Technology, 2009 (12): 1- 2
Wang: Microstructure and Properties of Broad-beam Laser Cladding NiCrBSi Coatings on Surface of 42CrMo Steel [J].Heat treatment of metal, 2001,26(3):16~18
[8] Yuan Bo,Qiu Chang- jun,Fan Xiang- fang, Study of Microstructure and Properties of HVOF- CoNiCrWC Coatings by Laser Solidification[J].

In order to investigate the effect of bentonite binder on adsorption and cation exchange properties of granulated nano NaY zeolite, the adsorption of Xe and N2 and removal of Sr2+ ion from aqueous solution was studied.
The presence of binder inside the produced zeolitic granules could affect its characterization [4].
Thus, it is important to carefully choose the binder and granulation process and have information on the influence of the binder on sorption and catalytic properties of granulated zeolite.
Therefore, the objective of the present work was to find the effect of bentonite binder on the adsorption and cation exchange properties of granulated nano zeolite Y.
Conclusion This study showed that the use of binder of bentonite significantly affected the adsorption and cation exchange properties of granulated nano zeolite.

Experimental studies were carried out to build the relationships between hysteresis measurements and the constituent properties of CMCs[4] [5] .
Vagaggini and Domergue[4] developed a methodology to assess constituent properties of CMCs with relatively few hysteresis loop measurements, and investigated the influence factors of unload/reload hysteresis and permanent strain.
The definition of in-plane scalar damage variables: d1, d2, d6 are given as: d1=1-E1E10d2=1-E2E20d6=1-G12G120 (15) Where E1, E2 and G12 are damaged elastic moduli of the material under mechanical loadings, and the superscript 0 denotes the elastic properties at initial state of the material.
Relationships between Hysteresis Measurements and the Constituent Properties of Ceramic Matrix Composites: I, Theory[J].
Relationships between Hysteresis Measurements and the Constituent Properties of Ceramic Matrix Composites: II, Experimental Studies on Unidirectional Materials[J].

The catalytic properties was tested at 800℃, atmospheric pressure, GHSV of 9000 ml3h-1g-1 and a CH4/CO2 molar ratio of 1.
In this study, SBA-15 was used as a support for Mo2C catalysts resulted in decrease of particle size and increase of specific surface area of metal oxide, both are favorable factors for better performance of carbon dioxide reforming of methane.
The textural properties of supports influence catalytic activity in two ways.
XRD analysis was used to identify the SBA-15 property of the catalysts.
Q Lu., Preparation, characterization, and catalytic properties of clay-based nickel catalysts for methane reforming, J. colloid Interface Sci .

Sintering schedule of nitridation Factors 1 2 3 4 A: Sm2O3 (S) 0.1 0.9 1.7 2.5 B: MgO (M) 0.1 0.5 1.0 1.5 C: sintering rule 950°C*1h+ 1000°C*3h+ 1200°C*3h 950°C*1h+ 1100°C*3h+ 1300°C*3h 950°C*1h+ 1200°C*3h+ 1400°C*3h 950°C*1h+ 1300°C*3h+ 1500°C*3h MgO, signed SMx, where x is content of sintering additive.
Table 1 shows the factors of including in experiment.
Instron universal mechanical machine was employed for flexural strength testing with cross-head speed of 0.5mm/min and a span of 16mm.
Not outstanding mechanical property was obtained from this group.
When Sm2O3 as main sintering additive, the main factor affect the strength and porosity is temperature.

Characteristics and forming causes of the cracks in welded joint of 15Cr1Mo1V steel serviced 70000h are investigated by mechanical and chemical testing and crack morphology observation.
The paper studies an engineering case in an attempt to explore the early failure modes of the 15Cr1Mo1V steel joints in service and its cause, analyzes the parameters and influence factors for cracks control, and put forward preventive measures against the early failure with the purpose of ensuring safe operation of the steel joints in service life.
The general rule of SRC found in CrMoV heat resistant steel is that, affected by the stress, cavities are likely to emerge at the original coarse austenite grain boundary in the CGHAZ.
Estimation of material properties and maintenance of pressure parts of thermal power plant boilers under long-term service of 300,000 hours.
Creep Damage in Heat Affected Zone of 2. 25Cr1Mo Steel Welded Joint after Using under Long Term High Temperature.

Introduction An increased use of recycled aluminium requires the development of new tailor made alloys and an optimisation of the thermo-mechanical processing routes so that to handle the corresponding changes and variations of chemical compositions (alloying elements and impurities).
Typically, alloying elements like Mn, Fe and Si will accumulate in secondary alloys, which may strongly affect the microstructural evolution and associated mechanical properties during processing.
It is well established that dispersoids affect recovery and recrystallization behavior through the pinning they exert on migrating sub-grain and grain-boundaries, i.e. the Zener drag effect.
With the present data this represents a factor of 2 larger for the effective Zener drag.
Both C2-1 and C2-3 experience a considerably lower Zener drag (although comparable) and the kinetics and final grain structure are accordingly less affected.