The Dehydrogenation Reactions and Kinetics of 2LiBH4−Al Composite

ABSTRACTThese studies have addressed the adsorption of CO on very thin (submonolayer to multilayer) deposits of Cu, Ni, Pd, and Fe on single crystals of Ru and W. The kinetics of the methanation, ethane hydrogenolysis, and cyclohexane dehydrogenation reactions have also been measured over these model bimetallic catalysts. Temperature programmed desorption (TPD) spectra of CO at submonolayer coverages reveal new desorption features which have significantly perturbed peak maxima from those observed on the bulk metals, indicating the unique character of these monolayer metallic films. This behavior has been correlated with LEED, ARUPS, work function, and kinetic measurements.

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Growth kinetics of TiAl3 layer in multi-laminated Ti–(TiB2/Al) composite sheets during annealing treatment

Materials Science and Engineering A ◽

10.1016/j.msea.2012.01.107 ◽

2012 ◽

Vol 539 ◽

pp. 337-343 ◽

Cited By ~ 33

Author(s):

Xiping Cui ◽

Guohua Fan ◽

Lin Geng ◽

Yin Wang ◽

Lujun Huang ◽

...

Keyword(s):

Growth Kinetics ◽

Annealing Treatment ◽

Al Composite ◽

Kinetics Of

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Effect of cold rolling on the aging kinetics of Al composite by differential scanning calorimetric technique

Scripta Metallurgica et Materialia ◽

10.1016/0956-716x(91)90293-a ◽

1991 ◽

Vol 25 (9) ◽

pp. 2165-2170 ◽

Cited By ~ 26

Author(s):

Huei-Long Lee ◽

Wun-Hwa Lu ◽

Sammy Lap-Ip Chan

Keyword(s):

Cold Rolling ◽

Differential Scanning Calorimetric ◽

Calorimetric Technique ◽

Al Composite ◽

Aging Kinetics ◽

Kinetics Of

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Microstructural Characteristics, Crack Frequency and Diffusion Kinetics of Functionally Graded Ti-Al Composite Coatings: Effects of Laser Energy Density (LED)

JOM ◽

10.1007/s11837-018-3272-7 ◽

2018 ◽

Vol 71 (3) ◽

pp. 900-911 ◽

Cited By ~ 2

Author(s):

E. O. Olakanmi ◽

M. Sepako ◽

J. Morake ◽

S. E. Hoosain ◽

S. L. Pityana

Keyword(s):

Energy Density ◽

Laser Energy ◽

Composite Coatings ◽

Functionally Graded ◽

Laser Energy Density ◽

Diffusion Kinetics ◽

Microstructural Characteristics ◽

Al Composite ◽

Kinetics Of ◽

And Diffusion

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Direct observations of radiation-enhanced transformations in glass

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100075543 ◽

1983 ◽

Vol 41 ◽

pp. 354-355

Author(s):

J. F. DeNatale ◽

D. G. Howitt

Keyword(s):

Glass Matrix ◽

Diffusion Mechanism ◽

Bubble Formation ◽

Silicate Glasses ◽

Phase Decomposition ◽

Direct Observations ◽

Thin Foils ◽

Oxygen Bubble ◽

Electron Energy Loss ◽

Kinetics Of

The electron irradiation of silicate glasses containing metal cations produces various types of phase separation and decomposition which includes oxygen bubble formation at intermediate temperatures figure I. The kinetics of bubble formation are too rapid to be accounted for by oxygen diffusion but the behavior is consistent with a cation diffusion mechanism if the amount of oxygen in the bubble is not significantly different from that in the same volume of silicate glass. The formation of oxygen bubbles is often accompanied by precipitation of crystalline phases and/or amorphous phase decomposition in the regions between the bubbles and the detection of differences in oxygen concentration between the bubble and matrix by electron energy loss spectroscopy cannot be discerned (figure 2) even when the bubble occupies the majority of the foil depth.The oxygen bubbles are stable, even in the thin foils, months after irradiation and if van der Waals behavior of the interior gas is assumed an oxygen pressure of about 4000 atmospheres must be sustained for a 100 bubble if the surface tension with the glass matrix is to balance against it at intermediate temperatures.

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