Effect of atmospheric-pressure plasma jet on polycrystalline diamond micro-milling of silicon carbide

Katahira, Kazutoshi; Ohmori, Hitoshi; Takesue, Shogo; Komotori, Jun; Yamazaki, Kazuo

doi:10.1016/j.cirp.2015.04.097

Cited by 34 publications

(15 citation statements)

References 11 publications

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“…Comparison of the quality surfaces by micro-milling silicon carbide with a micro diamond tool evidenced the effect of applying a plasma jet in improving both the chip formation process and removing the surface contamination at the tool edge, obtaining a high-quality surface with a roughness Ra of 0.73nm [7].…”

Section: Micro-millingmentioning

confidence: 99%

Complex Micro Machining of an Injection Mold Surface for a Conductive Polymeric Composite Product

Serban

Opran

2019

MATEC Web Conf.

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Hydrogen and fuel cell technologies were identified amongst new renewable energy technologies which contribute strongly to mitigating climate change. Important research activities were directed to the injection molded bipolar plates made by conductive polymeric composites. The mold surface quality can help obtaining better conductivity. In this paper are presented the experiments regarding complex micro-machining of the surfaces of an injection mold for a conductive polymeric composite product by micro-milling and for finishing and cleaning by laser beam micro-machining. The laser ablation consists in removing material from a solid surface by irradiating it with a laser beam, in successive layers in order to achieve complex geometries with accuracy of about micrometres. Injection moulding experiments evidenced the very good replication of the micro-machined surface pattern.

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Section: Micro-millingmentioning

confidence: 99%

Complex Micro Machining of an Injection Mold Surface for a Conductive Polymeric Composite Product

Serban

Opran

2019

MATEC Web Conf.

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“…Atmospheric pressure plasma treatment (APPT) is conducive to the auxiliary cutting of some difficult-to-cut materials [13][14][15][16][17]. The atmospheric pressure plasma is rich in active particles and has a low temperature, which improves the metal surface wettability rapidly and improves the cooling and lubricating environment in the cutting area.…”

Section: Introductionmentioning

confidence: 99%

“…The cutting process is environmentally friendly, so it has a broad application prospect in the auxiliary precision machining of pure iron and other materials. Katahira et al [13] studied the micromilling of SiC with polycrystalline diamond tools. The surface roughness (Ra) of the workpiece could be reduced from 3.22 nm to 0.73 nm by atmospheric pressure plasma technology, and the polycrystalline diamond tool life could be improved.…”

Section: Introductionmentioning

confidence: 99%

Surface Physical and Chemical Modification of Pure Iron by Using Atmospheric Pressure Plasma Treatment

Kong

Song

et al. 2020

Materials

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To investigate the mechanism of surface modification of pure iron by atmospheric pressure plasma treatment (APPT), the surface wettability of pure iron was characterized by using a contact-angle measuring instrument, and the mechanical properties of pure iron were measured by a tensile testing machine and nanoindentation instrument. Molecular dynamics simulations were used to explain the modification mechanism of the surface wettability and the mechanical behavior of pure iron by APPT. The experimental results show that pure iron treated by APPT is superhydrophilic, with reduced tensile strength and surface hardness. This result agrees with the molecular dynamics simulation, which shows that the pure iron material hydrophilicity improved after APPT. The behavior was attributed to the formation of hydrogen bonds on the surface of the pure iron after APPT. The surface binding energy of the pure iron material increased between the water molecule and the residual N atom that was induced by APPT. The N atom that was introduced by the APPT led to Fe bond fracture, and the N atom reduced the Fe bond strength, which resulted in a reduction of material yield strength and microhardness.

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“…Among the various machining methods, polishing is the last step to obtain good surface integrity. However, SiC ceramics have poor machinability due to their high hardness and brittleness [1,2,3,4]. The surface and subsurface damages may seriously deteriorate the quality of optical parts under thermal load during machining [5].…”

Section: Introductionmentioning

confidence: 99%

Analytical Prediction of Subsurface Damages and Surface Quality in Vibration-Assisted Polishing Process of Silicon Carbide Ceramics

et al. 2019

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Subsurface damages and surface roughness are two significant parameters which determine the performance of silicon carbide (SiC) ceramics. Subsurface damages (SSD) induced by conventional polishing could seriously affect the service life of the workpiece. To address this problem, vibration-assisted polishing (VAP) was developed to machine hard and brittle materials, because the vibration-assisted machine (VAM) can increase the critical cutting depth to improve the surface integrity of materials. In this paper, a two-dimensional (2D) VAM system is used to polish SiC ceramics. Moreover, a theoretical SSD model is constructed to predict the SSD. Furthermore, finite element simulation (FEM) is adopted to analyze the effects of different VAP parameters on SSD. Finally, a series of scratches and VAP experiments are conducted on the independent precision polishing machine to investigate the effects of polishing parameters on brittle–ductile transition and SSD.

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Effect of atmospheric-pressure plasma jet on polycrystalline diamond micro-milling of silicon carbide

Cited by 34 publications

References 11 publications

Complex Micro Machining of an Injection Mold Surface for a Conductive Polymeric Composite Product

Complex Micro Machining of an Injection Mold Surface for a Conductive Polymeric Composite Product

Surface Physical and Chemical Modification of Pure Iron by Using Atmospheric Pressure Plasma Treatment

Analytical Prediction of Subsurface Damages and Surface Quality in Vibration-Assisted Polishing Process of Silicon Carbide Ceramics

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