Characteristic change of hydrogen permeation in stainless steel plate by BN coating

Tamura, Motonori; Noma, Masao; Yamashita, Michiru

doi:10.1016/j.surfcoat.2014.09.041

Cited by 45 publications

(26 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hydrogen permeation occurred in the film and the substrate because of decompression in the gas phase at the noncoated side of the substrate. Our previous study 17 has demonstrated the dependence of permeation flux J on the driving pressure Dp in BN-and TiN-coated samples. The exponent n had a value of 0.48-0.53 at 573-773 K, which indicated that hydrogen passed through the samples in the diffusion-limited permeation mode.…”

Section: A Hydrogen-permeation Modementioning

confidence: 98%

“…4,5 Studies concerning hydrogen-barrier films have been conducted in a variety of fields such as nuclear fusion reactors, fuel cells, H 2 S corrosion components, or vacuum equipment. [17][18][19][20][21][22][23][24][25][26] Dense ceramic films such as Al 2 O 3 , TiC, TiN, and BN have been reported to provide superior hydrogenbarrier performance. A diverse range of methods have been used to form these films, such as chemical vapor deposition, physical vapor deposition, or plasma-spray, and it is possible to reduce hydrogen permeation by creating a few folds in ceramic films with thickness of a few micrometers.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Nanostructured thin films for hydrogen-permeation barrier

Tamura

Eguchi

2015

Journal of Vacuum Science &Amp; Technology A: Vacuum, Surfaces, and Films

View full text Add to dashboard Cite

The authors confirmed that applying a coating of Al2O3, TiC, or TiN on a substrate reduced the hydrogen permeation by a factor of at least one order of magnitude compared with uncoated substrates. Al2O3 films consisting of fine crystal grains, with diameters of about 40 nm or less, provided superior hydrogen-permeation barriers on the test specimens. The test specimens coated with TiN or TiC films, with columnar crystals grown vertically on the substrate, tended to exhibit higher hydrogen permeability. The microcrystalline structures with many grain boundaries are expected to provide effective hydrogen-barrier performance.

show abstract

Section: A Hydrogen-permeation Modementioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Nanostructured thin films for hydrogen-permeation barrier

Tamura

Eguchi

2015

Journal of Vacuum Science &Amp; Technology A: Vacuum, Surfaces, and Films

View full text Add to dashboard Cite

show abstract

“…Our previous study [13] has demonstrated the dependence of permeation flux J on the driving pressure Δp in BN-and TiN-coated samples. The exponent n had a value of 0.48 ~ 0.53 at 573 ~ 773 K, which indicated that hydrogen passed through the samples in the diffusion-limited permeation mode.…”

Section: Hydrogen-permeation Modementioning

confidence: 98%

Hydrogen Permeation Characteristics of TiN-Coated Stainless Steels

Tamura¹

2015

JMSE-A

View full text Add to dashboard Cite

TiN films consisting of fine crystal grains, with diameters of about 100 nm or less, provided superior hydrogen-permeation barriers. Applying a coating of TiN on a stainless steel substrate reduced the hydrogen permeation by a factor of about 100 to 5,000 compared with uncoated substrates. Effect of microstructure of films on hydrogen-permeation behavior is studied. The test specimens coated with films, with columnar crystals grown vertically on the substrate, tended to exhibit higher hydrogen permeability. The grain boundaries of the films became trap sites for hydrogen and microcrystalline structures with many grain boundaries are expected to provide effective hydrogen-barrier performance.

show abstract

“…It is known that hydrogen permeation through thin-film-coated steel samples is diffusion-limited when the driving pressure is between 10 4 and 10 5 Pa [3,9]. The permeation flux was continuously measured at a test temperature.…”

Section: Hydrogen-permeation Testsmentioning

confidence: 99%

“…For example, films such as Al 2 O 3 , TiN, TiC, and BN are efficient hydrogen barriers [1][2][3]. Films created using methods such as PVD show better adhesion with the metal surface, have fewer inner vacancies or particles, and are known to be suitable for fine and smooth surfaces.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Permeation Behavior of Stainless Steels Treated with Nitrogen-Plasma

Tamura¹

2016

JMSE-B

View full text Add to dashboard Cite

Abstract:The surface of austenitic stainless steel SUS316L was treated with nitrogen-plasma and its hydrogen permeability function was investigated. On the stainless steel surface, a nitride phase and a nitrogen-dispersed phase were found 5 m from the surface. The nitride phase was mainly consisting of -Fe 2-3 N particles 0.1-0.4 m in size. This nitride phase had hydrogen permeability an order of magnitude less than that for the untreated sample. The plasma nitride sample was confirmed to have a hydrogen permeation prevention effect.

show abstract

Characteristic change of hydrogen permeation in stainless steel plate by BN coating

Cited by 45 publications

References 31 publications

Nanostructured thin films for hydrogen-permeation barrier

Nanostructured thin films for hydrogen-permeation barrier

Hydrogen Permeation Characteristics of TiN-Coated Stainless Steels

Hydrogen Permeation Behavior of Stainless Steels Treated with Nitrogen-Plasma

Contact Info

Product

Resources

About