Mechanisms and Applications of Laser Chemical Machining

Stephen, Andreas

doi:10.1016/j.phpro.2011.03.132

Cited by 20 publications

(13 citation statements)

References 1 publication

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“…Compared to electrochemical machining (ECM), that also allows the processing of conductive materials regardless of their hardness [77], LCM/E's aspect ratio is much smaller [78] but it has good agreement with better resolution [79] and surface roughness [80]. In comparison to direct laser ablation the MRR and aspect ratio of LCM/E are smaller but it involves little heat generation [81] and thus thermal effects do not occur [82]. Therefore, laser chemical etching is quite suitable for machining wide range of materials not only thick samples [83] but also thin foils [84] and even wafers with high precision and ultra-smooth surface with nm level roughness [85].…”

Section: Laser Chemical Machining / Etching (Lcm/e)mentioning

confidence: 99%

Laser Ablation and Laser-Hybrid Ablation Processes: A Review

Ahmed¹,

Darwish²,

Alahmari³

2015

Materials and Manufacturing Processes

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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: Laser Chemical Machining / Etching (Lcm/e)mentioning

confidence: 99%

Laser Ablation and Laser-Hybrid Ablation Processes: A Review

Ahmed¹,

Darwish²,

Alahmari³

2015

Materials and Manufacturing Processes

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show abstract

“…Compared to electrochemical machining (ECM), that also allows the processing of conductive materials regardless of their hardness [119], LCM/E's aspect ratio is much smaller [120] but it has good agreement with better resolution [121] and surface roughness [122]. In comparison to direct laser ablation the MRR and aspect ratio of LCM/E are smaller but it involves little heat generation [123] and thus thermal effects do not occur [124]. Due to the required low laser power density, melting is avoided, resulting in high-precision cutting edges without burrs and debris.…”

Section: Laser Chemical Machining/etching (Lcm/e)mentioning

confidence: 99%

“…The etchant flow speeds ranging between 2 and 20 m/s offers competitive results. In another study the same author fabricated electron beam apertures and finishing of micro forming tools by LCM/E [124]. Li and Achara [130] achieved 300 % high MRR for stainless steel using Nd:YVO 4 laser with 2.6 W and high repetition frequency of 25 kHz.…”

Section: Lcm/e Mechanismmentioning

confidence: 99%

Laser Beam Machining, Laser Beam Hybrid Machining, and Micro-channels Applications and Fabrication Techniques

Darwish

Ahmed

Al‐Ahmari

2016

Machining, Joining and Modifications of Advanced Materials

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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 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 and in turn build a relatively new route of laser-hybrid processes. 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. This chapter reviews the research work carried out so far in the area of LBM and its hybrid processes for different materials and shapes.

show abstract

“…This leads to the formation of recast layers, burrs and melt droplets at the machining edge. In comparison to direct laser ablation the MRR and aspect ratio of LCM/E are smaller but it involves little heat generation [123] and thus thermal effects do not occur [124]. Laser chemical removal, that allows surface heating without surface melting or vaporizing, requires a low power density.…”

Section: Laser Chemical Machining/etching (Lcm/e)mentioning

confidence: 99%

“…The reduction oxidation reaction (Redox reaction) is the fundamental phenomenon of LCM. In another study the same author fabricated electron beam apertures and finishing of micro forming tools by LCM/E [124]. The laser energy just supports the kinematic of dissolution and has no melting effects.…”

Section: Lcm/e Mechanismmentioning

confidence: 99%