Search results

Fe(NO3)3•9H2O and Al(NO3)3•9H2O were dissolved in deionized water.
During the process the pH value of solution should be kept between 6 to 7 and the co-precipitate of Fe(OH)3 and Al(OH)3 was being formed.
Dave, E.L.

In the previous study, Chaar et al. [7] and Patel et al. [8] indicated that Mg3(VO4)2 was a more selective catalyst in the ODH of butane due to the difficuity in reducing of oxygen atoms in the V-O-Mg bonds in Mg3(VO4)2 than the bridging oxygen in the V-O-V bonds in Mg2V2O7.
Chaar et al. [9] observed the similar selectivity for Mg3(VO4)2 and Mg2V2O7 in the ODH of propane, however, Sam et al. [10] suggested that Mg2V2O7 was the selective phase and Mg3(VO4)2 leaded to the complete oxidation because the ability of the corner-shared VO4 tetrahedra in V2O74- anion to stabilize V4+ associated with an oxygen vacancy.
Regarding the ODH of cyclohexane, Kung et al. [11] only carried out the reaction over 40(60)V-Mg-O catalyst and obtained a relatively better catalytic performance.
FT-IR patterns of the Mg-V-O catalysts Fig.2 showed the FT-IR characterization patterns of Mg-V-O catalysts, which is in accordance with the characterization results of Hanuza et al.[13], Sam et al.[14] and Gao et al.[15].
Spinace and E.L.

Even for repair welding of Al alloys the literature has too little to offer [3].
Their structure consists from solid solution of Si into Al matrix (α – phase), and almost pure silicon, β – phase.
A similar approch has been done by Munoz, [4] and all, 2008, for an heat treatable Al-Mg-Sc alloy.
TIG Welding parameters Phases Is, [A] d MA, [mm] d el W, [mm] vs, [cm/min] q, [l/min] υ, [Hz] Root pass 100 2.4 2.4 8.3 8 160 Upper pass 80 2.4 2.4 9.6 8 160 where: Is – welding current; , dMA- filler metal diameter; vs – welding speed; q – gas flow; va – wire speed; υ – frequency.
Ma, A.L.

Later Fang el al. [3] reported from observation on thermal etched CCTO under SEM micrograph, the semiconductive grains are actually consisted of domains and domain boundaries which resulting two kind of insulating barrier layer.
Liu et al. [12] which also studied Nb doped CCTO suggested by adding Nb shift the relaxation toward higher frequency.
The same trend also reported by Liu et al. [12] and Hong et al. [13].
According to Brize et al. [14], larger grain formation leads to higher value of dielectric constant.
These observation is meet agreement as reported by Liu et al. [12].

Hartz et al. disposed C2F6 by using microwave plasma under 2-43 Torr pressure [8].
Wofford et al. carried out the abatement experiment under 0.3-0.5 Torr low pressure conditions [9].
Shin et al. presented a kerosene microwave plasma method for abatement of SF6 and CF4 gases [13].
Tsai et al. investigated the abatement of SF6 and CF4 by atmospheric pressure microwave plasma [16, 17].
El-Bahy, R.

The flow stress is defined by Kim et al. model.
Kim et al. model [3].
According to Medina et al. [4], a softening is observed when dynamic recrystallization appears because of the induced microstructural changes.
Briottet et al. [7] have introduced Eq.2 using also the Boltzman constant R, to determine the activation energy Q.
El Mansori, Experimental study of the brittle ductile transition in hot cutting of SG iron specimens.

Price et al. investigated aluminum particles as an additive to increase the thrust and Isp of the solid rockets. [3] Analytic study of aluminum particle combustion including radiation effect was conducted by Bidabadi et al. [4,5] Perturbation technique were used to obtain exact solution of sets of ordinary differential equations.
Recently Sundaram et al. [7] conducted similar study on nano-sized particles.
Risha et al. [9,10] implemented experimental studies on nano aluminum combustion with water.
Ignition temperature of nano aluminum particle which depends on the size of the particle proposed by Sundaram et al. [7] In Eqn.3, is density of water, is vaporization enthalpy of water.
Pudduppakkam, Combustion, Explosion, and Shock Waves, Vol. 41, No, 6, pp. 622-638 (2005) [2] E.L.

[3] Sabine Valangea, Annie Derouaulta, Jo¨el Barraulta, Zelimir Gabelica.

Results and Discussion Effects of Al Contents on Chemical Compositions of Synthesized Powders The chemical compositions of SrTiO3 and SrTiO3 with 10-30 at% Al was examined using x-ray diffractometry technique.
For the SrTiO3 with Al, two phases were present.
The results indicated that TiO2 content increased with the Al content.
The observation was in agreement with the study reported by Kim et al. 2004 [8].
Abd El-razek, E.M.

A study of tool wear and surface roughness was conducted by Yusuf et al. [7] in dry turning of LM6-TiC composite using uncoated carbide cutting tool.
Joardar et al. [8] used LM6/SiCp MMC to evaluate the effect of process parameter in turning by using response surface methodology.
Higher oxidation resistance occurred because of the protective layer formation of Al2O3 and an intermediate layer formed by Ti, Al, O and N [9].
Pillai, Some aspects of machining cast Al-SiCp composites with conventional high speed steel and tungsten carbide tools, J.
Abou-El-Hossein, Cutting fluid efficiency in end milling of AISI 304 stainless steel, Ind.