hydrogen atmosphere
Pore Morphology of Porous Al Ti Alloy Fabricated by Continuous Casting in Hydrogen Atmosphere
... Porous Al-5 mass%Ti alloy was fabricated by unidirectional solidification in hydrogen atmosphere, using a continuous casting technique. The porous Al-Ti alloy was prepared at different transfer ...
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Aging of Copper Titanium Dilute Alloys in Hydrogen Atmosphere: Influence of Prior Deformation on Strength and Electrical Conductivity
... published data are confined to a mild deformation up to a reduction in thickness of 15%. In this work, we first examined systematically the strength and conductivity of Cu-Ti dilute alloys that were processed using a ...
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A Hydrogen Atmosphere Spectral Model Applied to the Neutron Star X7 in the Globular Cluster 47 Tucanae
... of hydrogen atmosphere mod- els for neutron stars in quiescent LMXBs, accounting self- consistently for electron thermal conduction, radiation force, self-irradiation of the NS, and variations in the NS ...
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Fabrication of Lotus type Porous Stainless Steel by Unidirectional Solidification under Hydrogen Atmosphere
... Alloy pieces of about 1500 g were prepared in order to fab- ricate large ingots to cut out specimens for tensile tests. They were put into a crucible of alumina of 65 mm in diameter and 120 mm in height. The chamber was ...
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Powder Forming Process from Machined Titanium Chips via Heat Treatment in Hydrogen Atmosphere
... hances the milling ability improvement, and fine powder can be produced via milling process. Figure 6 reveals the parti- cle size distribution (a) and median particle diameter (b) of each hydration treated Ti-64 ...
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Densification Behavior of Ti Doped Polycrystalline Alumina in a Nitrogen Hydrogen Atmosphere
... boundary diffusion is the predominant process over a wide range of temperatures and pressures. In addition, it is well- known that the sintering behavior in alumina is sensitive to small levels of doping of various ...
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Convective overshoot and macroscopic diffusion in pure hydrogen atmosphere white dwarfs
... the hydrogen abundance in helium-atmospheres, one can also infer about the full past history of accretion since hydrogen does not diffuse out of the convective layers (Gentile Fusillo et ...
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Aging of Cu 3 at% Ti Alloys in Hydrogen Atmosphere: Influence of Hydrogen Pressure on Strength and Electrical Conductivity
... of hydrogen pressure during isothermal aging on the mechanical strength, electrical conductivity, and microstructure of Cu- 3 at% Ti alloys was investigated under various hydrogen pressures from 0 to ...
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The Effect of Temperature on Microstructure, Magnetic Properties and Reaction Kinetics of Ni0 5Co0 5Fe2O4 Reduction in Hydrogen Atmosphere
... studied. The initial ferrite powder and the various reduction products were characterized by XRD, pore size, SEM, VSM and reflected light microscope to reveal the effect of hydrogen reduction on composition, ...
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Formation of MgCu2 from MgH2 and Cu in Pressurized Hydrogen Atmosphere
... equations (4) and (5) and as van ’ t Hoff plot in Fig. 6. Equations (4) and (6) in the originally published paper were removed from this paper due to that reason. Hydrogen pressure at 673 K was modi fi ed from 6.5 ...
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Development of Large Diamond Synthesis by Double Test Tubes Hot Filament Chemical Vapor Deposition
... In addition, each synthesis of diamond, the synthetic diamonds were annealed in hydrogen atmosphere for 9 min at 900°C to improve the quality of the synthetic diamond. After that, characteristics of the ...
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In situ measurements of thickness changes and mechanical stress upon gasochromic switching of thin MoOx films
... first hydrogen phase, when the stress changes from com- pressive to tensile, a phase transformation from the meta- stable  to the ␣ phase takes place, which reduces the film thickness and increases the film ...
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COMMISSIONS G1 AND G4 OF THE IAU INFORMATION BULLETIN ON VARIABLE STARS
... of hydrogen responsible for the observed emission lines occurs in a shock region in the atmosphere (Joy 1947, Merrill 1955), where infalling material from the previous pulsation cycle collides with that ...
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Is Methanol Using Co2 From the Atmosphere a New Fuel to Replace Gasoline?
... The recent disaster in the Gulf has drawn attention to the longevity of the oil supply and what alternative to gasoline is the appropriate fuel to which we should turn. The suggestion of Methanol as a substitute for ...
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Hydrogen in the atmosphere of the evolved WN3 Wolf-Rayet star WR 3: defying an evolutionary paradigm?
... of hydrogen in the envelope of a seemingly evolved WN star (Meynet & Maeder ...of hydrogen in their atmospheres, WR 128 (WN4) and WR 152 (Crowther et ...of hydrogen: the short-period binary WR 46 ...
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Reactivity of Au/La<sub>1 x</sub>Sr<sub>x</sub>Cr<sub>1 y</sub>Ni<sub>y</sub>O<sub>3 δ</sub> toward Oxidative Coupling of Methane for C<sub>2</sub> and C<sub>3</sub> Hydrocarbons Production
... The SEM micrographs in Fig. 3 show that the average particle size of the perovskite calcined in hydrogen is slightly smaller than the perovskite calcined in the air. The particle size of the perovskite calcined in ...
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The modification of thin film surface structure via low temperature atmospheric pressure CVD post process treatment
... Amorphous silicon thin film cells typically contain a small percentage of hydrogen for dangling bond passivation to improve material integrity (34) . These films are commonly fabricated by plasma enhanced chemical ...
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Can magnetic fields suppress convection in the atmosphere of cool white dwarfs? A case study on WD2105−820
... radiative atmosphere, magnetic pressure and magneto-optical effects may become important with stronger fields and a simple radiative model (where convective flux is fixed to zero, see ...
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Stellar and planetary remnants in digital sky surveys
... One may speculate that both DAZ and DBZ white dwarfs can undergo a short-lived phase of very high rate accretion. Whereas the long diffusion time scales of DBZ provide an efficient “memory” to such events, the opposite ...
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Modelling of the Stratified Atmosphere in a Nuclear Power Plant Experimental Facility with a Lumped-Parameter Description
... multi-component atmosphere in a multi-compartment nuclear power plant contain- ment during accident conditions was ...the atmosphere stratification test E11.2 Hydrogen distribution in loop flow ...
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