Trapping State of Hydrogen Isotopes in Carbon and Graphite Investigated by Thermal Desorption Spectrometry

2015 ◽  
Vol 67 (2) ◽  
pp. 245-249 ◽  
Author(s):  
H. Atsumi ◽  
T. Tanabe ◽  
T. Shikama
Keyword(s):  
Thermal Desorption ◽  
Hydrogen Isotopes ◽  
Thermal Desorption Spectrometry ◽  
Carbon And Graphite ◽  
Trapping State

Origin of the Hydrogen Absorbed by Incoherent TiC Particles in Iron

2005 ◽  
Vol 475-479 ◽  
pp. 233-236 ◽  
Author(s):  
Kaneaki Tsuzaki ◽  
Fu Gao Wei
Keyword(s):  
Heat Treatment ◽  
Water Vapor ◽  
High Temperatures ◽  
Thermal Desorption ◽  
Hydrogen Absorption ◽  
Room Temperature ◽  
Trap Hydrogen ◽  
Thermal Desorption Spectrometry ◽  
Long Time

Hydrogen absorption of incoherent TiC particles that were once reported to be strong hydrogen traps in iron at room temperature was investigated by means of thermal desorption spectrometry (TDS). The results indicated that incoherent TiC particles in iron do not trap hydrogen at all at room temperature even they are cathodically charged for a long time. Only at high temperatures and in atmosphere containing hydrogen source, incoherent TiC particles can trap hydrogen. The origin of hydrogen trapped by incoherent TiC particles was justified to be water vapor in the atmosphere during heat treatment.

Stability of Nitrogen in Sputtered Iron Nitride thin films and Multilayers

1997 ◽  
Vol 475 ◽  
Author(s):  
H. Chatbi ◽  
M. Vergnat ◽  
J. F. Bobo ◽  
L. Hennet
Keyword(s):  
Thin Films ◽  
Thermal Desorption ◽  
Rf Sputtering ◽  
Iron Nitride ◽  
X Ray Diffraction ◽  
X Ray ◽  
Thermal Desorption Spectrometry

ABSTRACTDifferent phases of FeN thin films and Fe/FeN multilayers were prepared by reactive rf sputtering. The release of nitrogen and the crystallographic transformations during annealing were monitored by thermal desorption spectrometry and X-ray diffraction experiments. Finally, the diffusivity of nitrogen in the γ-Fe4N phase was evaluated.

A New Method to Determine the Activation Energy for Hydrogen Desorption from Steels

2005 ◽  
Vol 475-479 ◽  
pp. 229-232
Author(s):  
Fu Gao Wei ◽  
Kaneaki Tsuzaki ◽  
Toru Hara
Keyword(s):  
Activation Energy ◽  
Thermal Desorption ◽  
Precise Measurement ◽  
Hydrogen Desorption ◽  
New Method ◽  
Thermal Desorption Spectrum ◽  
Thermal Desorption Spectrometry ◽  
Desorption Spectrum ◽  
Tic Particle ◽  
Best Fit

A new method has been developed to determine the activation energy for hydrogen desorption from steels by means of thermal desorption spectrometry (TDS). This method directly fits the Kissinger’s reaction kinetic formula dX/dt=A(1-X)exp(-Ed/RT) to experimentally measured thermal desorption spectrum and best fit yields the activation energy (Ed) and the value of constant A. It has been proven that this new method is applicable to precise measurement of the activation energy for hydrogen desorption from incoherent TiC particle, coherent TiC precipitate, grain boundary and dislocation in 0.05C-0.20Ti-2.0Ni and 0.42C-0.30Ti steels.

Reduction Site in Ce n V m O k + Revealed by Gas Phase Thermal Desorption Spectrometry

2017 ◽  
Vol 61 (1-2) ◽  
pp. 42-48 ◽  
Author(s):  
Fumitaka Mafuné ◽  
Daigo Masuzaki ◽  
Toshiaki Nagata
Keyword(s):  
Gas Phase ◽  
Thermal Desorption ◽  
Thermal Desorption Spectrometry
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