Nano-level Material Processing by Multifunction Cavitation

Yoshimura, Toshihiko; Tanaka, Kumiko; Yoshinaga, Naoto

doi:10.2174/2210681206666160922164202

Cited by 39 publications

(22 citation statements)

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“…In the present study, a new cavitation method termed multifunction cavitation (MFC) [4][5][6][7] which combines the characteristics of both UC and water jet cavitation was applied to the study of bubble fusion. This method involves irradiation with ultrasonic waves to achieve low-velocity floating cavitation.…”

Section: Methodsmentioning

confidence: 99%

Estimation of Bubble Fusion Requirements during High-Pressure, High- Temperature Cavitation

Yoshimura¹,

Yoshiya²,

Tanaka³

et al. 2018

Int J Adv Tech

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Section: Methodsmentioning

confidence: 99%

Estimation of Bubble Fusion Requirements during High-Pressure, High- Temperature Cavitation

Yoshimura¹,

Yoshiya²,

Tanaka³

et al. 2018

Int J Adv Tech

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“…The conduit of the WJ nozzle in Figure 1 was processed in a closed state. This conduit is an insertion port into which powder [8] and chemicals are put for processing metal or ceramic powder. During the MFC treatment, an ultrasonic transducer was positioned orthogonal to the water jet nozzle and ultrasonic waves (UC) was imparted to the water jet.…”

Section: Experimental Methodsmentioning

confidence: 99%

Surface Modification of Cr-Mo Steel Using New Water Jet Cavitation Technology

Ijiri¹,

Shimonishi²,

Nakagawa³

et al. 2018

Res. Rev. J Mat. Sci

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Low-alloy steels are based on carbon steel in combination with several percent or less (in many cases 1%) alloying elements, and offer improved resistance to corrosion at a slightly higher cost than carbon steel. However, these materials do not exhibit the same corrosion resistance as stainless steel. The authors have previously developed the novel multifunction cavitation (MFC) technique, which combines ultrasonic cavitation with water jet cavitation. It has been reported that MFC-processed Cr-Mo steel (JIS-SCM435) has improved corrosion resistance in rust, and voids and cracks are not formed to any significant extent in the specimen interior. In this study, the authors investigated the cause of improvement of corrosion resistance of rust in MFC processed Cr-Mo steel (JIS-SCM435) by surface potential measurement and dissolved oxygen measurement.

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“…In the present report, the above findings were further developed using a MFC machine to improve the surfaces of TiO2 powder granules; the relationship between surface charge and hydrogen generation characteristics was then examined. Some experimental data from previous findings will also be presented for clarity (Yoshimura et al, 2016a), (Tanaka et al, 2016), (Yoshimura et al, 2016b). In addition to energy issues, improvements in recycling technologies have been cited as important problems in the 21st century.…”

Section: Introductionmentioning

confidence: 97%

Nano-level manufacturing by multifunction cavitation

Tanaka

Ijiri

Nakagawa

et al. 2018

JAMDSM

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This work assessed the fundamental characteristics of multifunction cavitation (MFC), that was high-temperature and high-pressure cavitation, through both experimental investigations. The application of ultrasonication to the floating cavitation of a water jet was found to produce microjets containing hot spots. MFC exhibited the capacity to perform nano-level hot work at a material surface, modifying the surface morphology and the surface electrochemical condition by hot spot melting. Ultrasonic irradiation of a water jet during floating cavitation was used to generate microjets with hot spots and this MFC process was employed to perform hot work on titanium oxide (TiO 2) particles as well as an ITO (Indium Tin Oxide) film on soda-lime glass and CFRP (Carbon Fiber Reinforced Plastics).

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Nano-level Material Processing by Multifunction Cavitation

Cited by 39 publications

References 0 publications

Estimation of Bubble Fusion Requirements during High-Pressure, High- Temperature Cavitation

Estimation of Bubble Fusion Requirements during High-Pressure, High- Temperature Cavitation

Surface Modification of Cr-Mo Steel Using New Water Jet Cavitation Technology

Nano-level manufacturing by multifunction cavitation

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