Critical verification of the Kissinger theory to evaluate thermal desorption spectra

Drexler, Andreas; Vandewalle, Liese; Depover, Tom; Verbeken, Kim; Domitner, Josef

doi:10.1016/j.ijhydene.2021.09.171

Cited by 30 publications

(16 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The fitted binding energies are slightly higher than the estimations according to the Kirchheim criterium [30,31,63], as given in Table 3, but they are in reasonable agreement with the binding energies given in the literature for DP steels [20].…”

Section: Parametrization Of the Bulk Diffusion Modelssupporting

confidence: 89%

“…Linear fits according to Eq. ( 1) revealed R 2 -values of almost 1 [31] and corresponding desorption energies of 24.3 kJ/mol, 23.9 kJ/mol and 26.9 kJ/mol for DP600, DP800 and DP1000, respectively. This is in very good agreement with desorption energies published in literature [20,62].…”

Section: Characterization Of Hydrogen Content and Desorption Energymentioning

confidence: 98%

“…As shown in a previous work, Eq. ( 1) is only applicable in case of single TDS speaks or well separated TDS peaks [31]. The TDS peak temperatures were determined in a rather straightforward manner without fitting of Gaussian curves.…”

Section: Thermal Desorption Spectroscopymentioning

confidence: 99%

“…The desorption energy E D according to Kissinger's theory [31] can be used to calculate the rate-determining step during thermal desorption of hydrogen. In the case of bulk diffusion, the rate-determining step is the thermal activation of long-range chemical diffusion.…”

Section: Characterization Of Hydrogen Content and Desorption Energymentioning

confidence: 99%

“…In the case of bulk diffusion, the rate-determining step is the thermal activation of long-range chemical diffusion. The Kirchheim criterium [30,31,63] applies, which links the desorption energy E D and the binding energy E B :…”

Section: Characterization Of Hydrogen Content and Desorption Energymentioning

confidence: 99%

See 4 more Smart Citations

The role of hydrogen diffusion, trapping and desorption in dual phase steels

et al. 2022

Self Cite

View full text Add to dashboard Cite

Hydrogen embrittlement (HE) of advanced high-strength steels is a crucial problem in the automotive industry, which may cause time-delayed failure of car body components. Practical approaches for evaluating the HE risk are often partially and contradictive in nature, because of hydrogen desorption during testing and inhomogenous hydrogen distributions in, e.g., notched samples. Therefore, the present work aims to provide fully parametrized and validated bulk diffusion models for three dual phase steels to simulate long-range chemical diffusion, trapping and hydrogen desorption from the surface. With one constant set of parameters, the models are able to predict the temperature dependency of measured Choo-Lee plots as well as the concentration dependency of measured effective diffusion coefficients. Finally, the parametrized and validated bulk diffusion models are applied for studying the role of the current density on the permeation time and the role of coatings as effective diffusion barriers. Graphical abstract

show abstract

Section: Parametrization Of the Bulk Diffusion Modelssupporting

confidence: 89%

Section: Characterization Of Hydrogen Content and Desorption Energymentioning

confidence: 98%

Section: Thermal Desorption Spectroscopymentioning

confidence: 99%

Section: Characterization Of Hydrogen Content and Desorption Energymentioning

confidence: 99%

Section: Characterization Of Hydrogen Content and Desorption Energymentioning

confidence: 99%

See 3 more Smart Citations

The role of hydrogen diffusion, trapping and desorption in dual phase steels

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

Insights into the particle diameter and base chosen for dry powder fire extinguishing agents

Zhao¹,

Xue²,

et al. 2022

Fire and Materials

View full text Add to dashboard Cite

Sodium bicarbonate and potassium bicarbonate are commonly used as the bases of dry powder fire extinguishing agents. However, the choices of particle diameter and base are still not obvious, bringing difficulties to the design of fire extinguishing agents. Through the study on thermal decomposition kinetics, it was found that the smaller the particle size, the faster the decomposition rate of dry powder agents. For instance, if the D90 of sodium bicarbonate is reduced from 46.2 to 1 μm, the decomposition rate triples. As determined by thermal decomposition experiments, the residues after a fire could be bicarbonates, carbonates, and mixtures. The residue solutions' pH shows that carbonates are more alkaline than bicarbonates, and potassium salts are more alkaline than sodium salts. The corrosion tests on four common metals reveal that the residues of potassium bicarbonate after a fire could accelerate the electrochemical corrosion of metal surfaces, especially aluminum alloys. This research identifies the ideal particle diameter and supports the choice of alkali metal salts for the design of dry powder agents.

show abstract

Effect of Tensile Loading and Temperature on the Hydrogen Solubility of Steels at High Gas Pressure

Drexler,

Konert,

Nietzke

et al. 2023

steel research int.

Self Cite

View full text Add to dashboard Cite

The hydrogen solubility in ferritic and martensitic steels is affected by hydrostatic stress, pressure and temperature. In general, compressive stresses decrease but tensile stresses increase the hydrogen solubility. This important aspect must be considered when qualifying materials for high‐pressure hydrogen applications (e.g., for pipelines or tanks) by using autoclave systems. This work proposes a pressure equivalent for compensating the effect of compressive stresses on the hydrogen solubility inside of closed autoclaves, to achieve solubilities that are equivalent to those in pipelines and tanks subjected to tensile stresses. Moreover, it is shown that the temperature effect becomes critical at low temperatures (e.g., under cryogenic conditions for storing liquid hydrogen). Trapping of hydrogen in the microstructure can increase the hydrogen solubility with decreasing temperature, having a solubility minimum at about room temperature. In order to demonstrate this effect, the generalized law of the hydrogen solubility is parametrized for different steels using measured contents of gaseous hydrogen. The constant parameter sets are verified and critically discussed with respect to the high‐pressure hydrogen experiments.This article is protected by copyright. All rights reserved.

show abstract

Critical verification of the Kissinger theory to evaluate thermal desorption spectra

Cited by 30 publications

References 54 publications

The role of hydrogen diffusion, trapping and desorption in dual phase steels

The role of hydrogen diffusion, trapping and desorption in dual phase steels

Insights into the particle diameter and base chosen for dry powder fire extinguishing agents

Effect of Tensile Loading and Temperature on the Hydrogen Solubility of Steels at High Gas Pressure

Contact Info

Product

Resources

About