Erosion of graphite electrodes

Lefort, A.; Parizet, M.J.; El-Fassi, S E; Abbaoui, M'Hammed

doi:10.1088/0022-3727/26/8/013

Cited by 42 publications

(32 citation statements)

References 6 publications

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“…Ablated mass and electric charge for the graphite anode. When considering the calculation for the entire pulse, our results are in agreement with those of Lefort et al [10] experimentally obtained with a current of 70 A (0.05 mg/C). The values they calculated for currents of 1000 A and more (0,16 mg/C) are also compatible with that we obtained with small diameter electrodes when considering only time during which current is above 500 A.…”

Section: Comparison With Literaturesupporting

confidence: 92%

“…The correlation between energy transfer and electrode erosion can be considered by relating ablation to current intensity (or electrical power) at a given instant or to the energy for a given period. When the current intensity is not constant over time the ablation can also be related to electric charge [10]. For a graphite anode, our results show that the ablation is negligible for current below 500 A.…”

Section: Comparison With Literaturementioning

confidence: 80%

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Anode energy transfer in a transient arc

Valensi

Ratovoson

Razafinimanana

et al. 2017

J. Phys.: Conf. Ser.

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Abstract. This work deals with experimental investigation of a transient arc. Arc configuration and electrode erosion were studied in order to quantify the energy transfer to the electrodes as a function of maximal current, time constant and electrodes material. Experiments with two consecutive arcs allow demonstrating non stationary behaviour of the arc electrode interaction. This is due to the fact that while the duration of the experiments is far larger than plasma phenomena time constants, it is comparable to those of electrode heating and melting processes.

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Section: Comparison With Literaturesupporting

confidence: 92%

Section: Comparison With Literaturementioning

confidence: 80%

Anode energy transfer in a transient arc

Valensi

Ratovoson

Razafinimanana

et al. 2017

J. Phys.: Conf. Ser.

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“…The electrodes used in furnaces are made almost exclusively of graphite. Manufacturers are recently concerned about graphite electrode recycling due to the cost of electrode replacement is very high 6,7) . In this study, synthesis of β-SiC was studied using a recycled graphite block in the form of electrode rods in furnaces containing metallic impurities less than 5 mg/kg as a carbon source.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of β-SiC Powder using a Recycled Graphite Block as a Source

Nguyen¹,

Bang²,

Kim³

et al. 2017

Journal of the Korean Institute of Resources Recycling

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주제어 : β-SiC 분말, 직접 탄화법, 재활용된 그라파이트, 결정 성장 AbstractThis paper relates to the synthesis of a source powder for SiC crystal growth. β-SiC powders are synthesized at high temperatures (>1400 o C) by a reaction between silicon powder and carbon powder. The reaction is carried out in a graphite crucible operating in a vacuum ambient (or Ar gas) over a period of time sufficient to cause the Si+C mixture to react and form polycrystalline SiC powder. End-product characterizations are pursued with X-ray diffraction analysis, SEM/EDS, particle size analyzer and ICP-OES. The purity of the end-product was analyzed with the Korean Standard KS L 1612.

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“…A number of previous studies focused on anode phenomena due to spot formation in either vacuum arcs and furnaces, or in high current regimes (> 1000 A) [11,12]. The anode process has also been studied theoretically in lower pressure regimes with longer arcs [13].…”

Section: Introductionmentioning

confidence: 99%