Nanostructured thin films for hydrogen-permeation barrier

Tamura, Motonori; Eguchi, Tadashi

doi:10.1116/1.4919736

Cited by 27 publications

(27 citation statements)

References 47 publications

(88 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These treatments must be applied in an accurate manner; in fact the coating process itself can introduce hydrogen [109]. 211,238]. Nitriding of the parent material's surface layer has been successfully used in various austenitic stainless steels in order to limit hydrogen ingress [130,137].…”

Section: Hydrogen Embrittlement Mitigation Strategies and Design Of Nmentioning

confidence: 99%

“… in particular has been shown to reduce wear [172]; thus, this coating may be particularly useful in bearing applications. Other compounds, such as [12], and have been proposed [56, 211, 238]. Nitriding of the parent material’s surface layer has been successfully used in various austenitic stainless steels in order to limit hydrogen ingress [130, 137].…”

Section: Hydrogen Embrittlement Mitigation Strategies and Design Of Nmentioning

confidence: 99%

See 1 more Smart Citation

Understanding and mitigating hydrogen embrittlement of steels: a review of experimental, modelling and design progress from atomistic to continuum

et al. 2018

View full text Add to dashboard Cite

Hydrogen embrittlement is a complex phenomenon, involving several lengthand timescales, that affects a large class of metals. It can significantly reduce the ductility and load-bearing capacity and cause cracking and catastrophic brittle failures at stresses below the yield stress of susceptible materials. Despite a large research effort in attempting to understand the mechanisms of failure and in developing potential mitigating solutions, hydrogen embrittlement mechanisms are still not completely understood. There are controversial opinions in the literature regarding the underlying mechanisms and related experimental evidence supporting each of these theories. The aim of this paper is to provide a detailed review up to the current state of the art on the effect of hydrogen on the degradation of metals, with a particular focus on steels. Here, we describe the effect of hydrogen in steels from the atomistic to the continuum scale by reporting theoretical evidence supported by quantum calculation and modern experimental characterisation methods, macroscopic effects that influence the mechanical properties of steels and established damaging mechanisms for the embrittlement of steels. Furthermore, we give an insight into current approaches and new mitigation strategies used to design new steels resistant to hydrogen embrittlement.

show abstract

Section: Hydrogen Embrittlement Mitigation Strategies and Design Of Nmentioning

confidence: 99%

Section: Hydrogen Embrittlement Mitigation Strategies and Design Of Nmentioning

confidence: 99%

Understanding and mitigating hydrogen embrittlement of steels: a review of experimental, modelling and design progress from atomistic to continuum

et al. 2018

View full text Add to dashboard Cite

show abstract

“…It has been found out that the most efficient barriers to hydrogen penetration are ultrafine-grained coatings without columnar structure [21,22]. Hydrogen penetration in these coatings decreases by two orders of magnitude as the grain size decreases from 100 to 20 nm [21,22]. The results reported by Tamura et al [22] showed that nanostructured titanium nitride is more efficient compared to nanostructured TiC and Al 2 O 3 .…”

Section: Introductionmentioning

confidence: 96%

“…The results of a study of hydrogen permeability through different-type coatings on titanium alloys and other materials allowed identifying several common factors affecting the efficiency of these coatings. It has been found out that the most efficient barriers to hydrogen penetration are ultrafine-grained coatings without columnar structure [21,22]. Hydrogen penetration in these coatings decreases by two orders of magnitude as the grain size decreases from 100 to 20 nm [21,22].…”

Section: Introductionmentioning

confidence: 99%

Nanostructured Coatings (Ti,Zr)N as a Barrier to Hydrogen Diffusion into Ti0.16Pd (wt.%) Alloy

Лотков

Latushkina

Копылов

et al. 2021

Metals

View full text Add to dashboard Cite

The results of a study of structure, phase, and chemical compositions of nanostructured (Ti,Zr)N coatings formed by vacuum arc deposition on Ti0.16Pd (wt.%) alloy substrates are reported. The coating composition was varied depending on the quasi-binary system δ—TiN—δ—ZrN. The coatings were formed in two modes: without (mode 1) and with (mode 2) rotation of the substrates in a plasma flow. It was shown that irrespective of the deposition regime, the coatings have a single-phase nanograined (grain size ≤ 20 nm) structure of δ-nitrides TiN, (Ti,Zr)N, and ZrN. It is found out that the coatings deposited in accordance with modes 1 and 2 significantly differ in their microstructure. It is demonstrated that in the case of electrolytic hydrogenation in a physiological saline solution (0.9% NaCl), the barrier properties of the coatings deposited via mode 2 are substantially better than those deposited via mode 1 (irrespective of the chemical coating compositions). In the coatings with a regular columnar structure (mode 1), there is a high concentration of hydrogen homogeneously distributed over the coating thickness. In the coatings formed via mode 2 (without columnar microstructure), a high concentration of hydrogen was observed in the subsurface area only. It is found out that there is no hydrogen diffusion into the substrate of these coating both immediately after hydrogenation and after storing for 430 h at room temperature. It was shown that the highest barrier properties were exhibited by the (Ti,Zr)N coatings with the least correlation of spatial distribution of nanograins and Zr/Ti ≤ 1. The hydrogen absorption in the coating based on zirconium nitride increases by a factor of 2.

show abstract

“…They are produced by various techniques: electrolytic deposition of metals and alloys, vacuum evaporation with subsequent condensation on the cathode substrate, the method of gas transport reactions, ion implantation, chemical-thermal treatment, etc. The composition of coatings is also very diverse: oxides, borides, nitrides, carbides, silicides [6][7][8][9][10][11][12]. Besides, many researchers are inclined to believe that it is more promising not to apply a certain coating, but to modify the surface, for example, using a pulsed carbon ion accelerator [13], or by means of high-energy methods, namely laser irradiation in various gas environments [14].…”

Section: Introductionmentioning

confidence: 99%

Complex Approach to Protecting Titanium Constructions from Hydrogen Embrittlement

Pryadko¹,

Dekhtyarenko²,

Bondarchuk³

et al. 2020

Metallofiz. Noveishie Tekhnol.

View full text Add to dashboard Cite

The research is aimed at studying the complex effect of alloying and protective coating on the resistance of titanium to embrittlement in a hydrogen environment. When determining the alloying complex, elements are selected that reduce the rate of interaction of titanium with the hydrogen-containing medium and increase the maximum allowable hydrogen concentrations. The AlN coating applied by helicon-arc ion-plasma sputtering is chosen as the barrier layer. The dynamics of hydrogen accumulation is studied by the Sievers' method in the mode of heating and isothermal exposure at hydrogen pressure of 0.6 MPa and temperature of (700 ± 10)°C. As proved, the proposed protective coating has a high resistance in aggressive hydrogen environments at temperatures up to 700°C, significantly reduces the catalytic ability of the surface, and has an order of magnitude lower permeability to hydrogen. Additional doping with aluminium and molybdenum further reduces the amount of absorbed hydrogen by 30%.

show abstract

Nanostructured thin films for hydrogen-permeation barrier

Cited by 27 publications

References 47 publications

Understanding and mitigating hydrogen embrittlement of steels: a review of experimental, modelling and design progress from atomistic to continuum

Understanding and mitigating hydrogen embrittlement of steels: a review of experimental, modelling and design progress from atomistic to continuum

Nanostructured Coatings (Ti,Zr)N as a Barrier to Hydrogen Diffusion into Ti0.16Pd (wt.%) Alloy

Complex Approach to Protecting Titanium Constructions from Hydrogen Embrittlement

Contact Info

Product

Resources

About