Anomalous cracking of bearing balls under a liquid-butane environment

Mizuhara, Kazuyuki; Taki, Tokihiko; Yamanaka, Kazushi

doi:10.1016/0301-679x(93)90022-s

Cited by 7 publications

(5 citation statements)

References 16 publications

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“…This will cause serious problems in critical components such as bearings [4][5][6][10][11][12][13][14][15][16]. Uyama et al [6] and Ciruna et al [3] observed that hydrogen content in the AISI 52100 bearing steel is one of the prime reasons for reduced bearing life.…”

Section: Introductionmentioning

confidence: 99%

“…This hydrogen diffuses into the steel and exceeds the critical value, causes shorter rolling contact fatigue life [4]. Thermal decomposition of chemisorbed water and surface contaminants participating in the tribochemical processes occurring at the interface are the other possible sources of hydrogen evolution [10,14,16].…”

Section: The Source Of Hydrogen In a Lubricated Tribocontactmentioning

confidence: 99%

See 1 more Smart Citation

Development of a novel in-situ technique for hydrogen uptake evaluation from a lubricated tribocontact

Esfahani

Morina

Han³

et al. 2017

Tribology International

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Development of a novel in-situ technique for hydrogen uptake evaluation from a lubricated tribocontact, Tribiology International, http://dx.doi.org/10. 1016/j.triboint.2017.01.019 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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Section: Introductionmentioning

confidence: 99%

Section: The Source Of Hydrogen In a Lubricated Tribocontactmentioning

confidence: 99%

Development of a novel in-situ technique for hydrogen uptake evaluation from a lubricated tribocontact

Esfahani

Morina

Han³

et al. 2017

Tribology International

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“…Some of them suggest that hydrogen embrittlement is not due to brittle fracture 2,[6][7][8] , for example, Birnbaum and Sofronis 6) showed that hydrogen enhances localized plasticity and Nagumo et al 8) suggested that hydrogen increases atomic vacancies and causes unstable plasticity. In the case of rolling contact fatigue, there are some studies that have suggested that hydrogen generated by the decomposition of lubricant or water in the lubricant decreases the rolling contact fatigue life [9][10][11][12][13][14][15][16][17][18] . Some of them pointed that hydrogen causes microstructural change called white structure or white etching area (WEA) [15][16][17][18] .…”

Section: Introductionmentioning

confidence: 99%

The Effects of Hydrogen on Microstructural Change and Surface Originated Flaking in Rolling Contact Fatigue

et al. 2011

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The effects of hydrogen on microstructural change and surface originated flaking in rolling contact fatigue were investigated using JIS-SUJ2 bearing steel specimens charged with hydrogen. Under clean lubrication conditions, subsurface originated flaking occurred and the rolling contact fatigue life was reduced and the amounts of the microstructural change called white structure that formed in the specimens increased as the hydrogen content increased. The localized microstructural changes were found in the hydrogen-charged specimens by electron microscope observations. It is supposed that the localization of plasticity was enhanced by hydrogen during the process of rolling contact fatigue. Under contaminated lubrication conditions, which included debris in the lubricating oil, surface originated flaking occurred and the rolling contact fatigue life of the hydrogen-charged specimens became shorter than the uncharged specimens, although white structure was not observed around the flaking. Enhancement of fatigue crack formations due to hydrogen was observed in specimens with artificial dents. It is presumed that hydrogen facilitated the formation of fatigue cracks on the raceway surface.

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“…hydrogen gas in fuel cells, water vapour in air) or from decomposition of lubricant (hydrocarbon-based oil and water molecules) on nascent metal surfaces generated by wear. In the high-stress, high-temperature conditions encountered in systems for supplying hydrogen such as compressors, both hydrogen gas and lubricant molecules (oil and solubilized water) can decompose on the fresh metal sites generated on the wear track and create atomic hydrogen 2,5,[10][11][12][13][14][15] . Severe lubrication conditions may produce more activated sites and increase hydrogen generation and diffusion in steel.…”

mentioning

confidence: 99%

Hydrocarbon Lubricants Can Control Hydrogen Embrittlement

Ratoi

Tanaka

Mellor

et al. 2020

Sci Rep

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While it is well known that during Rcf tests the formation of nascent catalytic sites on the wear track can break down hydrocarbon molecules to release atomic hydrogen, the potential of the hydrogen environment in fuel cells to hydrocrack the hydrocarbon lubricant in high pressure rolling contacts has so far been ignored. Here we investigate for the first time the ability of the hydrogen environment to generate a chemical tribofilm on the wear track most likely through lubricant hydrocracking, as compared with argon and air environments. Despite the ability of the hydrogen environment to generate a notably larger amount of atomic hydrogen, the chemical tribofilm significantly prevents the formation of atomic hydrogen and its subsequent diffusion through the lattice of steel rolling element bearings. this is of great importance in the lubrication of hydrogen technology and the prevention of Hydrogen embrittlement (He). An investigation into the prospects of high energy micro-computedtomography (Micro-ct) as a non-destructive technique for sub-surface damage characterisation in Rcf was comparatively performed alongside traditional sectioning methods.

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Anomalous cracking of bearing balls under a liquid-butane environment

Cited by 7 publications

References 16 publications

Development of a novel in-situ technique for hydrogen uptake evaluation from a lubricated tribocontact

Development of a novel in-situ technique for hydrogen uptake evaluation from a lubricated tribocontact

The Effects of Hydrogen on Microstructural Change and Surface Originated Flaking in Rolling Contact Fatigue

Hydrocarbon Lubricants Can Control Hydrogen Embrittlement

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