Formation of a phosphoric acid compound film on an AZ31 magnesium alloy surface using cavitation bubbles

Ijiri, Masataka; Yamaguchi, Koji; Kikuchi, Shoichi; Kato, Fumihiro; Kunieda, Y.; Ogi, Takayuki; Yoshimura, Toshihiko

doi:10.1016/j.surfin.2021.101194

Cited by 8 publications

(2 citation statements)

References 23 publications

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“…However, magnesium alloys have certain limitations. In particular, they are easily corroded by gas or liquid media, which severely limits the development and application of magnesium alloys (Merson et al, 2022;Yang et al, 2022aYang et al, , 2022bIjiri et al, 2021;Ansari and Thakur, 2017;Toorani et al, 2017). And different magnesium alloys have different forms and degrees of corrosion.…”

Section: Introductionmentioning

confidence: 99%

Research advances on superhydrophobic coating for metal surfaces via one-step electrodeposition

Chen,

He,

Kang

et al. 2024

ACMM

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Purpose This study aims to review the current one-step electrodeposition of superhydrophobic coatings on metal surfaces. Design/methodology/approach One-step electrodeposition is a versatile and simple technology to prepare superhydrophobic coatings on metal surfaces. Findings Preparing superhydrophobic coatings by one-step electrodeposition is an efficient method to protect metal surfaces. Originality/value Even though there are several technologies, one-step electrodeposition still plays a significant role in producing superhydrophobic coatings.

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Section: Introductionmentioning

confidence: 99%

Research advances on superhydrophobic coating for metal surfaces via one-step electrodeposition

Chen,

He,

Kang

et al. 2024

ACMM

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“…These techniques are able to generate compressive residual stress on material surfaces, improve corrosion resistance and oxidation resistance, and form tough layers that resist cracking. Using these methods, our group has modified the surfaces of low alloy steels, aluminum alloys Yoshimura et al (2021a), magnesium alloys Ijiri et al (2021), Ni-based superalloys and titanium dioxide particles Yoshimura et al (2018a).…”

Section: Introductionmentioning

confidence: 99%

Estimation of Nuclear Fusion Requirements in Bubbles During Ultra-High-Pressure, Ultra-High-Temperature Cavitation Promoted by Magnetic Field

Yoshimura

Ijiri

Sato

2022

Int. J. Eng. Sci. Tech

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In the present work, a strong magnetic field was applied near the outlet of the water jet nozzle to promote the generation of multifunction cavitation bubbles. Because these bubbles contained charged species, the bubbles experienced a Lorentz force due to the magnetic field and collided with greater force. As such, the internal bubble pressure exceeded the threshold value required for fusion to occur. The expansion of these charged bubbles in response to ultrasonic irradiation affected adjacent charged bubbles so that the energy density of the atoms in the bubbles was greater than the fusion threshold. The results of this work strongly suggest that the formation of bubbles via the UTPC process in conjunction with a strong magnetic field may result in bubble fusion.

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Development of energy intensive multifunction cavitation technology and its application to the surface modification of the Ni-based columnar crystal superalloy CM186LC

Yoshimura

Sugae

Ogi

et al. 2021

Heliyon

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The present work demonstrates a technique for the hot forging of metal surfaces in water at 1000 °C or higher, termed energy-intensive multifunctional cavitation (EI-MFC). In this process, the energy of cavitation bubbles is maximized, following which these bubbles collide with the metal surface. This technique will be employed to improve the surface structure of CM186LC/DS, a Ni-based columnar crystalline superalloy used to manufacture the rotor blades of jet engines and gas turbines that are exposed to high-temperature oxidizing environments, with the aim of improving creep strength. EI-MFC processing induces compressive residual stress in the metal that prevents the occurrence of surface cracks and also increases surface hardness, improves corrosion resistance, and increases the coefficient of friction. The latter effect can enhance the adhesion of thermal barrier coatings applied to Ni-based superalloys by thermal spraying. The technology demonstrated herein can be applied to present-day jet engine and gas turbine components and also to the production of hydrogen combustion turbines operating at 1700 °C with higher combustion efficiency than the current 1500 °C class gas turbines. In addition, the high processing energy obtained using the EI-MFC technique has the potential to flatten rough surfaces resulting from the stacking pitches of various metals manufactured using three-dimensional printers, and so improve surface strength.

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Formation of a phosphoric acid compound film on an AZ31 magnesium alloy surface using cavitation bubbles

Cited by 8 publications

References 23 publications

Research advances on superhydrophobic coating for metal surfaces via one-step electrodeposition

Research advances on superhydrophobic coating for metal surfaces via one-step electrodeposition

Estimation of Nuclear Fusion Requirements in Bubbles During Ultra-High-Pressure, Ultra-High-Temperature Cavitation Promoted by Magnetic Field

Development of energy intensive multifunction cavitation technology and its application to the surface modification of the Ni-based columnar crystal superalloy CM186LC

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