Micromachining features of TiC ceramic by femtosecond pulsed laser

Zhang, Ying; Wang, Yuqian; Zhang, Junzhan; Liu, Yongsheng; Yang, Xiaojun; Zhang, Qing

doi:10.1016/j.ceramint.2015.01.095

Cited by 38 publications

(10 citation statements)

References 34 publications

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“…The machinability is defined by an absorption capacity, reflectance and thermal conductivity of material [26,27]. It is possible to machine various types of metals [23,28], ceramics [29], glass [30], semiconductor materials [31], polymers [32], diamond [33], mineral and composite materials [34][35][36][37], as well as a biocompatible materials [38,39] and biomaterials (hydroxyapatite, bones and tissues) [40].…”

Section: Introductionmentioning

confidence: 99%

Laser surface texturing of tool steel: textured surfaces quality evaluation

2016

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Abstract:In this experimental investigation the laser surface texturing of tool steel of type 90MnCrV8 has been conducted. The 5-axis highly dynamic laser precision machining centre Lasertec 80 Shape equipped with the nano-second pulsed ytterbium fibre laser and CNC system Siemens 840 D was used. The planar and spherical surfaces first prepared by turning have been textured. The regular array of spherical and ellipsoidal dimples with a different dimensions and different surface density has been created. Laser surface texturing has been realized under different combinations of process parameters: pulse frequency, pulse energy and laser beam scanning speed. The morphological characterization of ablated surfaces has been performed using scanning electron microscopy (SEM) technique. The results show limited possibility of ns pulse fibre laser application to generate different surface structures for tribological modification of metallic materials. These structures were obtained by varying the processing conditions between surface ablation, to surface remelting. In all cases the areas of molten material and re-cast layers were observed on the bottom and walls of the dimples. Beside the influence of laser beam parameters on the machined surface quality during laser machining of regular hemispherical and elipsoidal dimple texture on parabolic and hemispherical surfaces has been studied.

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Section: Introductionmentioning

confidence: 99%

Laser surface texturing of tool steel: textured surfaces quality evaluation

2016

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“…In LBM, the material is extracted using a high-power laser pulsed at a particular spot on the object to be machined. Numerous studies have highlighted the feasibility of using LBM to produce microfeatures on an array of materials including metals [ 6 , 7 ], alloys [ 8 , 9 , 10 ], polymers [ 11 , 12 , 13 , 14 ], glass [ 15 , 16 , 17 ], and ceramics [ 18 , 19 , 20 , 21 , 22 ]. For example, Leitz et al [ 23 ] illustrated the laser ablation process of the metals and concluded that the pulse duration of the laser source seriously impacts its output.…”

Section: Introductionmentioning

confidence: 99%

Micromachining of Biolox Forte Ceramic Utilizing Combined Laser/Ultrasonic Processes

et al. 2020

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Micromachining has gained considerable interest across a wide range of applications. It ensures the production of microfeatures such as microchannels, micropockets, etc. Typically, the manufacturing of microchannels in bioceramics is a demanding task. The ubiquitous technologies, laser beam machining (LBM) and rotary ultrasonic machining (RUM), have tremendous potential. However, again, these machining methods do have inherent problems. LBM has issues concerning thermal damage, high surface roughness, and vulnerable dimensional accuracy. Likewise, RUM is associated with high machining costs and low material-removal rates. To overcome their limits, a synthesis of LBM and RUM processes known as laser rotary ultrasonic machining (LRUM) has been conceived. The bioceramic known as biolox forte was utilized in this investigation. The approach encompasses the exploratory study of the effects of fundamental input process parameters of LBM and RUM on the surface quality, machining time, and dimensional accuracy of the manufactured microchannels. The performance of LRUM was analyzed and the mechanism of LRUM tool wear was also investigated. The results revealed that the surface roughness, depth error, and width error is decreased by 88%, 70%, and 80% respectively in the LRUM process. Moreover, the machining time of LRUM is reduced by 85%.

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“…They suggested power below 6 watts, frequency below 40 Hz, and scanning speed above 60 Hz for good surface quality. Femtosecond laser with helical drilling technique was utilized by Zhang et al [19] to make blind and through holes in titanium carbide. The quality of holes was analyzed by changing the spiral number, processing time, laser fluence, and repetition rate.…”

Section: Introductionmentioning

confidence: 99%

Effects of Laser Fluence and Pulse Overlap on Machining of Microchannels in Alumina Ceramics Using an Nd:YAG Laser

et al. 2019

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The quality of micro-features in various technologies is mostly affected by the choice of the micro-fabrication technique, which in turn results in several limitations with regard to materials, productivity, and cost. Laser beam micro-machining has a distinct edge over other non-traditional methods in terms of material choices, precision, shape complexity, and surface integrity. This study investigates the effect of laser fluence and pulse overlap while developing microchannels in alumina ceramic using an neodymium-doped yttrium aluminum garnet (Nd:YAG) laser. Microchannels 200 µm wide with different depths were machined using different laser peak fluence and pulse overlap (percentage of overlap between successive laser pulses) values. It was found that high pulse overlaps and fluences should be avoided as they give rise to V-shaped microchannels i.e., 100% bottom width errors. The optimal peak fluence range was found to be around 125–130 J/cm2 corresponding to 3–5 µm depth per scan. In addition, channels fabricated with moderate pulse overlap were found to be of good quality compared to low pulse overlaps.

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Micromachining features of TiC ceramic by femtosecond pulsed laser

Cited by 38 publications

References 34 publications

Laser surface texturing of tool steel: textured surfaces quality evaluation

Laser surface texturing of tool steel: textured surfaces quality evaluation

Micromachining of Biolox Forte Ceramic Utilizing Combined Laser/Ultrasonic Processes

Effects of Laser Fluence and Pulse Overlap on Machining of Microchannels in Alumina Ceramics Using an Nd:YAG Laser

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