Excimer laser ablation of Y-SiAlON

Laude, L.D.; Ogeret, Ch; Jadin, Alain; Kolev, K.

doi:10.1016/s0169-4332(97)00754-x

Cited by 11 publications

(4 citation statements)

References 2 publications

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“…Yttrium stabilized Si-Al-O-N (Y-sialon) was irradiated by an Kr-F-excimer laser at a fluence of 850 mJ/cm 2 , pulse repetition rate varying from 2 to 20 Hz and by applying different number of pulses. 73 The material removal in Y-sialon under the above processing conditions was by ablation. The variation of ablation depth and a Y-sialon sample ablated by laser irradiation is presented in Fig.…”

Section: Ablationmentioning

confidence: 99%

Laser machining of structural ceramics—A review

Samant

Dahotre

2009

Journal of the European Ceramic Society

429

169

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Section: Ablationmentioning

confidence: 99%

Laser machining of structural ceramics—A review

Samant

Dahotre

2009

Journal of the European Ceramic Society

429

169

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“…At the edge region of the groove some white debris is visible for both SiAlON types. This can be attributed to Si3N4-decomposition and Si-oxidation [ 18 ] as the laser ablation experiment was performed in ambient atmosphere. For the latter the chemical reaction can be described according to:

…”

Section: Resultsmentioning

confidence: 99%

“…In the case of LKT 550 high

and orthogonal irradiation angle lead to high Ra values. This can be explained by the high

leading to re-condensation, Si3N4-decomposition and Si-oxidation [ 18 ]. Low Ra values are measured for the quasi-tangential laser irradiation.…”

Section: Resultsmentioning

confidence: 99%

Laser Ablation Study of Cutting Ceramics with Consideration of the Beam Inclination Angle

et al. 2023

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Silicon alumina nitride (SiAlON) and alumina toughened zirconia (ATZ) ceramics are applied for ceramic cutting tools to machine, e.g., cast iron, nickel base alloys and other difficult-to-machine materials. The state of the art technology for manufacturing of the cutting tool geometry is grinding. Laser processing of ceramics is already studied in terms of ablation rate and roughness evaluation with the application of dental implant manufacturing. In the present study, laser machining of the mentioned ceramics is explored with a laser beam source of 1064 nm wavelength and 10 ps pulse duration (FWHM). The angle dependent energy specific removal rate is described in a model and the optimal pulse fluence for the different materials and the irradiation angles can be derived. For processing at irradiation angle of up to 75° no decrease of the relative absorption could be observed. For ATZ, lowest surface roughness is determined for both, orthogonal and quasi-tangential processing angle. For SiAlON, the roughness decreases constantly for higher tilt angles. A significant difference in the material answer with change of the sample composition can be detected and the results show the potential of further developing SiAlON ceramics towards machineability for laser ablation.

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“…Insufficiently high value of thermal conduction coefficient of Si 3 N 4 ceramics leads to occurrence of the high temperature gradients in its surface layer at laser processing [3]. The high thermal stresses leading to fracture of nitride ceramic details are formed under the influence of these gradients [4]. Therefore an actual scientific task is studying of thermomechanical mechanism of chance failure of the nitride ceramic details under the action of the intensive heat flow [5].…”

Section: Introductionmentioning

confidence: 99%

Modelling of Influence of Intensive Heat Flow on Stress Inhomogeneity in Ceramic System TiC-Y2O3-Si3N4

Kuzin

Fedorov

Dašić³

et al. 2015

AMM

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Modelling is necessary for the control of exploitation process of ceramic details to achieve improved reliability and high productivity. Of most importance in exploitation of nitride ceramic details is the establishment of models that relates external loading with stress-strain state through consideration of mechanical and thermal interactions between the ceramic structural elements. This paper evaluates several interrelationships between heat flow and stress inhomogeneity in nitride ceramics which revealed the results of simulation analysis.

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Excimer laser ablation of Y-SiAlON

Cited by 11 publications

References 2 publications

Laser machining of structural ceramics—A review

Laser machining of structural ceramics—A review

Laser Ablation Study of Cutting Ceramics with Consideration of the Beam Inclination Angle

Modelling of Influence of Intensive Heat Flow on Stress Inhomogeneity in Ceramic System TiC-Y<sub>2</sub>O<sub>3</sub>-Si<sub>3</sub>N<sub>4</sub>

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