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Published in: Journal of Materials Science 18/2024

29-04-2024 | Ceramics

Effects of ultrasonic vibration-assisted machining methods on the surface polishing of silicon carbide

Authors: Yunhui Chen, Ling Pan, Zhiqiang Yin, Yunli Wu

Published in: Journal of Materials Science | Issue 18/2024

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Abstract

The ultrasonic vibration-assisted polishing (UVAP) method, a recently developed advanced processing technology, is widely used in the processing of brittle materials. This study uses molecular dynamics (MD) simulations to investigate the polishing behavior of diamond grits on SiC workpieces during the UVAP process. The frequency (fz), amplitude (Az), and dimensions of the vibration are varied to investigate various aspects of the material removal process. In the low-frequency region, the UVAP processing method exacerbates taper slips and dislocations in the workpiece. In the high-frequency region, fz and Az can improve the MRR by more than 32% and reach 2–4 times higher than that of traditional scratching, respectively. The surface morphology obtained using MD simulation is consistent with the experimental results. In the ultrasonic elliptical vibration assisted polishing (UEVAP) method, fy not only causes a periodic and stable increase in temperature, which helps to transform atoms into an amorphous structure, but it also increases material removal rate (MRR) while decreasing friction factor and surface roughness. Appropriate increase of fz reduces forces and improves stress distribution. Az significantly increases MRR but results in a rough surface. In comparison to the UVAP process, the UEVAP method further improves MRR and produces smoother machined surfaces.

Graphical Abstract

This study uses molecular dynamics (MD) simulations to investigate the polishing behavior of diamond grits on SiC workpieces during the UVAP process. The frequency (fz), amplitude (Az), and dimensions of the vibration are varied to investigate various aspects of the material removal process.

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Literature
22.
go back to reference Matsuda O, Wright O (2014) Frontiers in Optical Methods. Springer 180:129–151 Matsuda O, Wright O (2014) Frontiers in Optical Methods. Springer 180:129–151
Metadata
Title
Effects of ultrasonic vibration-assisted machining methods on the surface polishing of silicon carbide
Authors
Yunhui Chen
Ling Pan
Zhiqiang Yin
Yunli Wu
Publication date
29-04-2024
Publisher
Springer US
Published in
Journal of Materials Science / Issue 18/2024
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-024-09661-x

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