Sulfidation of Ceria Surfaces from Sulfur and Sulfur Diffusion

2012 ◽  
Vol 116 (15) ◽  
pp. 8417-8425 ◽  
Author(s):  
Zhansheng Lu ◽  
Jolla Kullgren ◽  
Zongxian Yang ◽  
Kersti Hermansson
Keyword(s):  
Sulfur Diffusion

scholarly journals Sulfur diffusion in dacitic melt at various oxidation states: Implications for volcanic degassing

2018 ◽  
Vol 226 ◽  
pp. 50-68 ◽  
Author(s):  
Matthias Bernhard Lierenfeld ◽  
Zoltán Zajacz ◽  
Olivier Bachmann ◽  
Peter Ulmer
Keyword(s):  
Oxidation States ◽  
Volcanic Degassing ◽  
Sulfur Diffusion

A Sulfur Diffusion Investigation in Metal and Oxide Phases

2006 ◽  
pp. 433-440
Author(s):  
Maya Radune ◽  
D. Ophir ◽  
A. Lugovskoy ◽  
M. Zinigrad ◽  
Dan Eliezer
Keyword(s):  
Oxide Phases ◽  
Sulfur Diffusion

Sulfur diffusion of hydrogen sulfide contaminants to cathode in a micro-tubular solid oxide fuel cell

2019 ◽  
Vol 321 ◽  
pp. 134713 ◽  
Author(s):  
D.-W. Choi ◽  
M. Ohashi ◽  
C.A. Lozano ◽  
J.W. Vanzee ◽  
P. Aungkavattana ◽  
...  
Keyword(s):  
Hydrogen Sulfide ◽  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Sulfur Diffusion ◽  
Diffusion Of Hydrogen

An Auger Electron Spectroscopic Study of the Diffusion of Sulfur and Carbon in α-Iron

1977 ◽  
Vol 31 (3) ◽  
pp. 210-213 ◽  
Author(s):  
W. E. Swartz ◽  
D. M. Holloway
Keyword(s):  
Activation Energy ◽  
Grain Boundary ◽  
Diffusion Process ◽  
Electron Spectroscopy ◽  
Auger Electron ◽  
Boundary Diffusion ◽  
Carbon Migration ◽  
Sulfur Diffusion ◽  
Kinetics Of ◽  
Arrhenius Analysis

Auger electron spectroscopy has been employed to study the diffusion of sulfur and carbon in α-iron. In the temperature range 25 to 500°C carbon preferentially segregates to the surface. From 400 to 700°C sulfur segregates to the surface while carbon is thermally desorbed. An Arrhenius analysis of the sulfur diffusion data yields an activation energy of 14.5 kcal/mol, which is consistent with a grain boundary diffusion process. The kinetics of carbon migration is complicated by the thermal desorption which makes Arrhenius analysis impossible.

Magmatic sulfur compounds and sulfur diffusion in albite melt at 1 GPa and 1300-1500 degrees C

1998 ◽  
Vol 83 (11-12 Part 1) ◽  
pp. 1141-1151 ◽  
Author(s):  
K. Tobias Winther ◽  
E. Bruce Watson ◽  
Gerald M. Korenowski
Keyword(s):  
Sulfur Compounds ◽  
Sulfur Diffusion

On the kinetics of sulfur diffusion in selenium

1971 ◽  
Vol 45 (1) ◽  
pp. K81-K84
Author(s):  
P. Brätter ◽  
H. Gobrecht
Keyword(s):  
Sulfur Diffusion ◽  
Kinetics Of

A KINETIC MODEL FOR THE REMOVAL OF SULFUR FROM POLYCRYSTALLINE TITANIUM SURFACES EXPOSED TO OXYGEN

1999 ◽  
Vol 06 (05) ◽  
pp. 935-940
Author(s):  
R. REIBEL ◽  
S. SCHNEIDER ◽  
H. CRUGUEL ◽  
J. LAPEYRE ◽  
R. J. SMITH
Keyword(s):  
Kinetic Model ◽  
Sulfur Removal ◽  
Physical Parameters ◽  
Temperature Dependent ◽  
Enhanced Diffusion ◽  
Titanium Surfaces ◽  
Sulfur Diffusion ◽  
Sticking Coefficients ◽  
Relevant Factors ◽  
Significant Factors

Recent studies using Auger Electron Spectroscopy (AES) on polycrystalline titanium surfaces led to the discovery of a temperature-dependent phenomenon for the removal of sulfur using oxygen exposures. It was seen that at temperatures greater than 200°C and pressures lower than 10-7 Torr O 2 the rate of sulfur removal from the surface was decreased significantly. The decrease in this rate of sulfur removal can be linked to several factors, including the temperature-enhanced diffusion of sulfur to the surface and the temperature-enhanced diffusion of oxygen into the bulk. By varying the pressure of oxygen and the temperature of the substrate and by monitoring the surface with AES we were able to identify the significant factors. A kinetic model for the two surface species is discussed and fit to the experimental results. This kinetic model includes physical parameters for such things as the activation energy for the sulfur diffusion to the surface as well as sticking coefficients for oxygen on the surface. Through this model the relevant factors for the decrease in the rate of sulfur removal are examined.

Effect of Sulfur Diffusion in 38MnVS6 Steel on Morphology and Microstructure of Laser Cladding Layers

2018 ◽  
Vol 45 (6) ◽  
pp. 0602005 ◽  
Author(s):  
陈茹 Chen Ru ◽  
虞钢 Yu Gang ◽  
何秀丽 He Xiuli ◽  
甘政涛 Gan Zhengtao ◽  
李少霞 Li Shaoxia
Keyword(s):  
Laser Cladding ◽  
Sulfur Diffusion ◽  
Cladding Layers

Recrystallization and sulfur diffusion in CdCl2-treated CdTe/CdS thin films

1997 ◽  
Vol 5 (4) ◽  
pp. 249-260 ◽  
Author(s):  
B. E. McCandless ◽  
L. V. Moulton ◽  
R. W. Birkmire
Keyword(s):  
Thin Films ◽  
Cds Thin Films ◽  
Sulfur Diffusion

Investigations of Extended Defects after Sulfur Diffusion in GaAs

1999 ◽  
Vol 69-70 ◽  
pp. 443-448 ◽  
Author(s):  
N. Engler ◽  
H.S. Leipner ◽  
R.F. Scholz ◽  
P. Werner ◽  
F. Syrowatka ◽  
...  
Keyword(s):  
Extended Defects ◽  
Sulfur Diffusion
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