Fast etching and metallization of SiC ceramics with copper-vapor-laser radiation

Dolgaev, Sergei I; Lyalin, A.A.; Shafeev, G. A.; Воронов, В. В.

doi:10.1007/s003390050354

Cited by 5 publications

(12 citation statements)

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“…In the meantime, pulses need to be short (in μs or ns) and their frequency low (< kHz) in order to achieve high ablation rate. The authors of [119] perceived high ablation in water than in air for SiC at laser beam dia of 20 μm, pulse duration of 15 ns, fluence level of 16 J/cm 2 . However, they used a repetition rate of 8 kHz which is contradictory for high ablation rate as mentioned before.…”

Section: High Ablation Ratementioning

confidence: 99%

“…High proportion of energy is absorbed by thick water film and thus attenuates the amount of energy to be absorbed by work material leading to less ablation efficiency [118]. Typical water layer thickness in horizontal position is 1-2 mm [119], however, different authors experienced different thickness values like [120] maintained 6 mm layer, [121] and [122] worked at 1-20 mm layer. Similarly, to ensure handful rise of ablation rate, [117] suggested 3-4 mm layer thickness for alumina.…”

Section: Water Layer Thicknessmentioning

confidence: 99%

“…In liquids, the temperature of confined plasma remains higher than in air [131], thus the liquid prevents the plasma expansion [132] that enrich the laser radiation energy [119] and consequently improves etching rate [133].…”

Section: Possible Reasons Of Ablation Rate Variationsmentioning

confidence: 99%

“…These micro-jets destroys the substrate surface (especially oxide layer) [121], that results high ablation rate in water [119].…”

Section: Possible Reasons Of Ablation Rate Variationsmentioning

confidence: 99%

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Laser Ablation and Laser-Hybrid Ablation Processes: A Review

Ahmed¹,

Darwish²,

Alahmari³

2015

Materials and Manufacturing Processes

101

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Laser beam machining (LBM) has proven its applications and advantages over almost all the range of engineering materials. It offers its competences from macro machining to micro and nano-machining of simple-to-complex shapes. The hybrid approaches in laser ablation have demonstrated much improved results in terms of material removal rate, surface integrity, geometrical tolerances, thermal damage, metallurgical alterations and many more. The flipside of LBM is the existence of universal problems associated with its thermal ablation mechanism. In order to alleviate or reduce the inherent problems of LBM, a massive research has been done during the past decade in order to build a relatively new route of laser-hybrid processes. This paper reviews the research work carried out so far in the area of LBM and its hybrid processes for different materials and shapes. The article also highlights the research gaps and future research directions in the context of laser and laser-hybrid ablation.

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Section: High Ablation Ratementioning

confidence: 99%

Section: Water Layer Thicknessmentioning

confidence: 99%

Section: Possible Reasons Of Ablation Rate Variationsmentioning

confidence: 99%

“…These micro-jets destroys the substrate surface (especially oxide layer) [121], that results high ablation rate in water [119].…”

Section: Possible Reasons Of Ablation Rate Variationsmentioning

confidence: 99%

See 2 more Smart Citations

Laser Ablation and Laser-Hybrid Ablation Processes: A Review

Ahmed¹,

Darwish²,

Alahmari³

2015

Materials and Manufacturing Processes

101

View full text Add to dashboard Cite

show abstract

“…However, in this route, most of the researchers opted different machining conditions (dry conditions, pressurized gaseous conditions, and wet conditions by H 2 O, H 2 O 2 , C 2 H 5 OH, C 2 H 4 Cl 2 , etc. [19][20][21]) and mostly present the results in the form of comparison. For example, a comparison on the surface and structural properties achieved after laser ablation under different environments can be touched in Ali et al [22] where the research team applied KrF Excimer laser on titanium alloy.…”

Section: Introductionmentioning

confidence: 99%

A comparison of laser beam machining of micro-channels under dry and wet mediums

Darwish

Ahmed

Alahmari

et al. 2015

Int J Adv Manuf Technol

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Micro-channels have been fabricated in nickelbased superalloy (Inconel 718) through laser beam machining (LBM). Two machining mediums are employed: dry and wet medium. Under the dry medium, laser beam passes through air prior to strike with target surface while under wet medium, the laser beam first travels through a layer of distilled water and reaches the substrate after. For both the machining environments, effects of laser power, pulse repetition rate, and laser scan speed on machined channels' width, depth, and taperness are investigated. A comparison of parametric effects on machined channels' profiles has been carried out for the said machining conditions. The results reveal that LBM under distilled water is more productive than LBM under air environment. In one step, wet machining conditions allow to generate a set of two microchannels, and dry conditions generate one micro-channel. Further, to achieve the optimum dimensions of micro-channels, the appropriate level of each of the investigated laser parameter is proposed.

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Machining, Joining and Modifications of Advanced Materials

Öchsner¹,

Altenbach²

2016

Advanced Structured Materials

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Fast etching and metallization of SiC ceramics with copper-vapor-laser radiation

Cited by 5 publications

References 0 publications

Laser Ablation and Laser-Hybrid Ablation Processes: A Review

Laser Ablation and Laser-Hybrid Ablation Processes: A Review

A comparison of laser beam machining of micro-channels under dry and wet mediums

Machining, Joining and Modifications of Advanced Materials

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