Preparation of Nanoparticles of Thermoelectric Materials 
by Ultrasonic Milling

Márquez-García, Lourdes; Li, Wei; Bomphrey, J. J.; Jarvis, D.J.; Min, Gao

doi:10.1007/s11664-015-3749-x

Cited by 2 publications

(2 citation statements)

References 6 publications

(6 reference statements)

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“…The recently developed flash sintering and rapid thermal annealing methods have shown high heating rates suitable for many ceramics, but need complex equipment [11]. Ultrasonic techniques have widely been used for molten alloy material preparation and heat treatment [14][15][16][17][18][19]. However, ultrasonic-assisted sintering techniques are only available at a few hundred degrees Celsius in the current studies [20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Ultrasound-Assisted Conventional Sintering of Silicate Ceramics

Shu¹

2022

Ceramics - Silikaty

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An ultrasonic-assisted resistance sintering furnace was developed by using an integrated crucible to transfer ultrasonic energy to silicate ceramic samples for improving the conventional sintering process. The silicate ceramic samples were prepared and sintered by conventional and ultrasound-assisted sintering processes. The shrinkage, water absorption, bulk density, crystalline phase, and morphology were investigated by using the Archimedes method, X-ray diffraction, and scanning electron microscopy. The results show that the densification and microstructure of the samples can be improved by the ultrasound-assisted sintering at lower sintering temperatures and sintering times. The optimum sintering temperatures in this study were 1160 °C and 1145 °C for the conventional and ultrasound-assisted sintering processes, respectively. The loading of ultrasonic waves in the sintering can homogenise the grain size and grain shape, and make the grain and pore distribution more uniform. The microstructure is remarkably improved at the appropriate sintering temperature and sintering times by ultrasonic-assisted sintering.

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Section: Introductionmentioning

confidence: 99%

Ultrasound-Assisted Conventional Sintering of Silicate Ceramics

Shu¹

2022

Ceramics - Silikaty

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“…However, ultrasonic milling developed much slower than other machining methods because of its complex machining process. Currently, publications about ultrasonic-assisted milling are mostly focused on longitudinal–vibration (L-T) milling 2–4 and 1D or 2D 5 vibration worktable.…”

Section: Introductionmentioning

confidence: 99%

Longitudinal–torsional ultrasonic vibration-assisted side milling process

Chen

Xiao³

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part C:

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In this paper, a longitudinal–torsional ultrasonic vibration-assisted side milling is investigated. Different from the continuous cutting process in conventional side milling, the longitudinal–torsional ultrasonic vibration milling process is high-frequency intermittent. The intermittent cutting process is caused by the helical trajectory of the cutting edge. A mathematical model is established to simulate the trajectory and then the high-frequency intermittent cutting process is analyzed based on the model. Spindle speed, helix angle of milling tool, and ultrasonic vibration amplitudes are found to be the factors that are responsible for the ultrasonic cutting effect. When the spindle speed is 1500 r/min and the helical angle of milling tool is 30°, ultrasonic vibration milling experiments have shown that the cutting force can be reduced by 45.8% in the x direction at the most, 27.6% in the y direction, and 48% in the z direction compared to conventional milling. The experimental results also show that the decrement of the cutting force decreases along with the increasing of the cutting speed and helical angle of milling tool due to the decrease of the uncutting time. However, the increasing of the vibration amplitude can increase the decrement.

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Preparation of Nanoparticles of Thermoelectric Materials by Ultrasonic Milling

Cited by 2 publications

References 6 publications

Ultrasound-Assisted Conventional Sintering of Silicate Ceramics

Ultrasound-Assisted Conventional Sintering of Silicate Ceramics

Longitudinal–torsional ultrasonic vibration-assisted side milling process

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