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Tuersley, Ian; Hoult, Tony; Pashby, I. R.

doi:10.1023/a:1004307710899

Cited by 19 publications

(1 citation statement)

References 3 publications

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“…Hydroxyapatite-SiC w ceramics can't be machined by EDM because it's insulator. [3][4][5][6] Ultrasonic machining is suitable for the machining of all kind of hard and fragile materials, especially suitable for the machining of hard and fragile nonmetal materials which are nonconducting or of high resistivity. The tool of ultrasonic machining needn't rotate and there are no complicated relative movement between workpiece and tool, so the tool can be made of softer material and made into complex shape, which can be used to the hole and surface machining of complex shape.…”

Section: Introductionmentioning

confidence: 99%

Study on the Ultrasonic Machining of Hydroxyapatite/SiC<sub>w</sub> Composite Bioceramics Material

Niu

Zhao

Wei

2007

AMR

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The influence of whisker orientation on machining mechanism, material removal rate and roughness of finished surface when machining the hydroxyapatite /SiCw composite bioceramics material using ultrasonic machining technology was studied. The research results show that material removal rate and roughness of finished surface increase with the increase of the direction angle θ . Under the same machining condition, the higher is the fracture toughness of the material, the lower the material removal rate is. This provides basis for the ultrasonic machining of hydroxyapatite /SiCw composite bioceramics material.

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Section: Introductionmentioning

confidence: 99%

Study on the Ultrasonic Machining of Hydroxyapatite/SiC<sub>w</sub> Composite Bioceramics Material

Niu

Zhao

Wei

2007

AMR

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Research on laser-assisted orthogonal micromachining technology of Cf/SiC composite

Tian

Zhai

et al. 2021

Int J Adv Manuf Technol

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Erosive Wear Mechanism of New SiC/SiC Composites by Solid Particles

Suh

Hinoki

2010

Tribol Lett

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A solid-particle erosive wear test by impinging silicon carbide (SiC) powders was carried out at room temperature over a range of median particle sizes of 425-600 lm, speed of 100 m/s and impact angle of 90°a nd assessed by wear measurements and scanning electron microscopy. Erosive wear behaviour was examined on newly fabricated nano-powder infiltration and transient eutectoid (NITE) SiC/SiC composites and two commercial composites by the chemical vapour infiltration (CVI) and NITE fabrication route. Microstructural observation was performed to examine the correlation between erosive wear behaviours and fabrication impurities. Conspicuous defects were observed in the prototype materials as the forms of porosity, fibre deformation, residual oxide, pyrolytic carbon (PyC) deformation, PyC cleavage, among others. Erosive wear behaviour was rather serious in the prototype of fabricated composites, which employ pre-SiC fibre and phenolic resin. Two dominant erosive wear mechanisms were observed: delamination of constituents, mainly caused by erosive crack propagation, and fragmentation and detachment of constituents, which usually resulted from erosive impact. A unit size of delamination was the most decisive factor affecting wear volume. The bonding strength of each constituent was mostly affected by various forms of porosities. Therefore, the fundamental cause and subsequent results must be carefully elucidated. The correlation of microstructural defect and wear behaviour was investigated with the aim of reducing dominant wear by improving fabrication conditions. The final product of the cost-effective composite had a 2.5-fold higher resistance than the commercial CVI composite. Consequently, by controlling fabrication impurities, we have been successful in developing and improving a new fabrication technique; consequently, the known defects are rarely observed in final product. A schematic wear model of erosive wear mechanisms is proposed for the newly fabricated SiC/SiC composites under particle erosion.

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Untitled

Cited by 19 publications

References 3 publications

Study on the Ultrasonic Machining of Hydroxyapatite/SiC<sub>w</sub> Composite Bioceramics Material

Study on the Ultrasonic Machining of Hydroxyapatite/SiC<sub>w</sub> Composite Bioceramics Material

Research on laser-assisted orthogonal micromachining technology of Cf/SiC composite

Erosive Wear Mechanism of New SiC/SiC Composites by Solid Particles

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