Influence of grain size on the wear behavior of CVD diamond coatings in micro-EDM

Uhlmann, Eckart; Rosiwal, Stefan; Rohner, Markus

doi:10.1007/s00170-009-2131-7

Cited by 20 publications

(11 citation statements)

References 1 publication

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“…The impact of grain size of the boron-doped CVD diamond coating was investigated on wear behavior in micro EDM process. The CVD diamond coatings could produce tiny discharge craters compared to microcrystalline diamond coatings with melting crystalline phase around the discharge crater [6]. The CNT coated electrodes can improve the higher material removal rate (MRR) and lower tool wear rate (TWR).…”

Section: Researchmentioning

confidence: 99%

Assessing the Effects of Uncoated and Coated Electrode on Response Variables in Electrical Discharge Machining for Ti-6Al-4V Titanium Alloy

Shirguppikar¹,

Patil²,

Phan³

et al. 2021

Tribol. Ind.

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The coated electrodes with high heat resistant alloy materials can considerably improve the efficiency of electrical discharge machining (EDM) process. In the present study, the influence of Aluminum Chromium Nickel Coated aluminium electrode was investigated on the quality criteria using EDM while machining Titanium alloy (Ti -6Al-4V). The peak current, gap voltage and pulse-on time were used as input parameters to analyze the material removal rate, tool wear rate and surface roughness under the L16 based Taguchi method and ANOVA method. It was observed that Aluminum Chromium Nickel (AlCrNi) coated electrode could produce higher material removal rate (MRR), lower of tool wear rate (TWR) and surface roughness (Ra) than uncoated electrode. Compared with EDM with uncoated electrodes, the quality indicators in EDM with coated electrode are better, namely 8% higher MRR, the lower TWR and Ra are 8% and 24%, respectively. The better surface finish was also observed with the coated electrode due to its thermal conductivity.

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Section: Researchmentioning

confidence: 99%

Assessing the Effects of Uncoated and Coated Electrode on Response Variables in Electrical Discharge Machining for Ti-6Al-4V Titanium Alloy

Shirguppikar¹,

Patil²,

Phan³

et al. 2021

Tribol. Ind.

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“…Surface quality is greatly enhanced following micro-EDM machining with a Boron À CVD diamond coated electrode. [21]. The dimensional accuracy in the micro-EDM with the Cu-ZrB2 coated electrode is much higher than that of the Cu electrode [22].…”

Section: Introductionmentioning

confidence: 96%

Multi-objects optimization in μ-EDM using AlCrN coated tungsten carbide electrode by Deng's method

Van

Shirguppikar²,

Huu

et al. 2022

Manufacturing Rev.

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In machining, the use of appropriate optimization method will significantly contribute in improving the economic and technical efficiency. Currently, there are many techniques used for multi-objective decisions in electrical discharge machining (EDM) and micro-EDM. This may create mistakes in choosing the optimal solution for each problem and mislead the optimum solution. Therefore, it is necessary to have research directions to be able to come up with a reasonable optimal method. In this study, the author has studied multi-targeting decisions in micro-EDM using coated electrode. Experiments were performed using Ti-6Al-4V as a workpiece material and AlCrN coated Tungsten carbide (WC) micro tool electrode. Deng's method was used to decide the optimized level of depth of machining (Z Co-Ordinate) and overcut (OC) in micro-EDM using the coated electrode. Research results are analyzed and evaluated with several other multi-objective decision methods. The results indicated that Deng's method was the suitable method for this study and the machined surface quality of the coated electrode was also analyzed.

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“…Here, despite the lower wear compared to the conventional electrode materials, machining of PCD and B-CVD posed a challenge due to their high hardness. This could be solved by coating the tungsten copper substrates with B-CVD as shown by Uhlmann et al [26,30], where nano crystalline grain size of B-CVD was found to be more effective than the microcrystalline structure [31]. Yuangang et al [32] used Cu-ZrB 2 coating and Wu et al [33] used Cu-TiN coating on the Ø0.5 mm copper tube electrodes to reduce wear and retain the electrode shape during erosion.…”

Section: Introductionmentioning

confidence: 97%

A strategy for low electrode wear in meso–micro-EDM

Maradia

Knaak

Busco

et al. 2015

Precision Engineering

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Influence of grain size on the wear behavior of CVD diamond coatings in micro-EDM

Cited by 20 publications

References 1 publication

Assessing the Effects of Uncoated and Coated Electrode on Response Variables in Electrical Discharge Machining for Ti-6Al-4V Titanium Alloy

Assessing the Effects of Uncoated and Coated Electrode on Response Variables in Electrical Discharge Machining for Ti-6Al-4V Titanium Alloy

Multi-objects optimization in μ-EDM using AlCrN coated tungsten carbide electrode by Deng's method

A strategy for low electrode wear in meso–micro-EDM

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