Observation of Hydrogen Distribution on Pt, Pd and Type 304 Austenitic Stainless Steel by Silver Decoration Method

Saitoh, Hiroumi; Hishi, T; Misawa, Toshihei

doi:10.2320/matertrans1989.37.373

Cited by 17 publications

(6 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This technique was applied, for instance, for hydrogen mapping produced at MnS inclusions in carbon steel 23 or in crevices in iron, 24 to study the distribution of hydrogen on the surface of platinum, palladium and steel of type 304, 25 etc. In the IL, the following cathodic reaction was assumed to proceed at MnS inclusions: 16…”

Section: C1 Mns Inclusion-induced Corrosion In [C N Mim]tcm Ilsmentioning

confidence: 99%

Microscopic study of the corrosion behaviour of mild steel in ionic liquids for CO₂ capture applications

et al. 2015

View full text Add to dashboard Cite

show abstract

Section: C1 Mns Inclusion-induced Corrosion In [C N Mim]tcm Ilsmentioning

confidence: 99%

Microscopic study of the corrosion behaviour of mild steel in ionic liquids for CO₂ capture applications

et al. 2015

View full text Add to dashboard Cite

show abstract

“…In addition to tritium autoradiography, other techniques for identifying hydrogen trap sites such as the microprint method, [16][17][18][19][20][21] silver decoration method, [22,23] secondary-ion spectrometry, [24,25,26] and the scanning laser-enhanced electrochemical microscopy [27,28] or photo-electrochemical reaction method [29,30] have been developed to visualize the distribution of hydrogen in steels. However, the trap sites associated with the nanoscale precipitate are difficult to reveal by these methods because of their poor spatial resolution.…”

Section: Introductionmentioning

confidence: 99%

Quantitative analysis on hydrogen trapping of TiC particles in steel

Wei

Tsuzaki

2006

Metall Mater Trans A

298

169

View full text Add to dashboard Cite

The change in the hydrogen-trapping behavior of a TiC particle accompanying its coherent to incoherent interfacial-character transition in a 0.05C-0.20Ti-2.0Ni steel that was quenched and tempered in a partially protective argon atmosphere and in ultrahigh vacuum (UHV) has been studied by thermal desorption spectrometry (TDS). The results indicated that (semi)coherent TiC precipitates demonstrate distinctly different hydrogen-trapping features from that of incoherent TiC particles with respect to hydrogen capacity, interaction energy with hydrogen, locations available for hydrogen occupation, and the capability of hydrogen absorption from the environment. The broad (semi)coherent interface of the disc-shaped (semi)coherent TiC precipitate does not trap hydrogen during tempering in a partially protected argon atmosphere, but traps hydrogen during cathodic charging at room temperature. The semicoherent interface traps 1.3 atoms/nm 2 of hydrogen at the core of the misfit dislocation with short-time charging (1 hour), which is characterized by a desorption activation energy of 55.8 kJ/mol. The side interface of the (semi)coherent TiC precipitate acts like the broad interface when the precipitate is small. As the precipitate grows, the side interface gradually loses its coherency and results in a simultaneous increase in the trapping activation energy and the binding energy. An increase in the trapping activation energy, i.e., the energy barrier for trapping, makes hydrogen trapping more difficult in cathodic charging at room temperature, while an increase in the binding energy enhances the capability of hydrogen absorption from the atmosphere during heat treatment. An incoherent TiC particle is not able to trap hydrogen during cathodic charging at room temperature due to its high energy barrier for trapping, but absorbs hydrogen during heat treatment at high temperatures. The amount of hydrogen that is trapped by incoherent TiC particles depends on their volume, which strongly indicates that incoherent TiC particles trap hydrogen within them rather than at the particle/matrix interface. Octahedral carbon vacancies are supposedly the hydrogen trap sites in incoherent TiC particles.

show abstract

“…Saitoh et al have reported that the efficiency of Ag deposition is dependent on the solution pH. 15) In the present study, the solution was used as prepared without any additional pH control.…”

Section: Methodsmentioning

confidence: 94%

Hydrogen Visualization in Steels Using Ag Decoration Method

Akiyama

Matsuoka

2015

Mater. Trans.

View full text Add to dashboard Cite

The relation between hydrogen distribution and metallographic microstructure was investigated by means of Ag decoration technique for a SUS304 austenitic stainless steel, and martensitic and spheroidized SCM440 steels precharged with hydrogen. Preferential distribution of Ag particles was seen on the slip lines of the deformed and hydrogen-charged SUS304 stainless steel, suggesting that the slip lines act as hydrogen trap sites. The martensitic SCM440 steel showed almost no selective Ag deposition, indicative of apparently homogeneous distribution of hydrogen. This is probably because the distribution of dislocations with relatively high concentration and the fine structure including lath boundaries etc. acting as hydrogen traps is homogeneous. The spheroidized SCM440 steel showed almost no Ag deposition on the coarse cementite particles and the Ag particle distribution on the other areas did not show clear selectivity. This result suggests that the hydrogen does not diffuse through the cementite particles. The smallest Ag particle size observed by means of atomic force microscope was in the order of 10 nm. Though the minimum size of the Ag particle does not necessarily indicate the resolution of the hydrogen visualization, Ag decoration technique is useful to observe the hydrogen distribution.

show abstract

Observation of Hydrogen Distribution on Pt, Pd and Type 304 Austenitic Stainless Steel by Silver Decoration Method

Cited by 17 publications

References 9 publications

Microscopic study of the corrosion behaviour of mild steel in ionic liquids for CO₂ capture applications

Microscopic study of the corrosion behaviour of mild steel in ionic liquids for CO₂ capture applications

Quantitative analysis on hydrogen trapping of TiC particles in steel

Hydrogen Visualization in Steels Using Ag Decoration Method

Contact Info

Product

Resources

About

Observation of Hydrogen Distribution on Pt, Pd and Type 304 Austenitic Stainless Steel by Silver Decoration Method

Cited by 17 publications

References 9 publications

Microscopic study of the corrosion behaviour of mild steel in ionic liquids for CO2 capture applications

Microscopic study of the corrosion behaviour of mild steel in ionic liquids for CO2 capture applications

Quantitative analysis on hydrogen trapping of TiC particles in steel

Hydrogen Visualization in Steels Using Ag Decoration Method

Contact Info

Product

Resources

About

Microscopic study of the corrosion behaviour of mild steel in ionic liquids for CO₂ capture applications

Microscopic study of the corrosion behaviour of mild steel in ionic liquids for CO₂ capture applications