XeCl laser ablation of Al2O3–TiC ceramics

Mendes, Marco; Oliveira, V.; Vilar, R.; Beinhorn, F.; Ihlemann, J.; Conde, O.

doi:10.1016/s0169-4332(99)00373-6

Cited by 17 publications

(8 citation statements)

References 18 publications

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“…9 On the other hand, columnar microstructures were recently reported to grow on titanium surface during multipulse laser irradiation in low (1 Pa) vacuum. 10 Similar columnar structures were also reported to grow on silicon, 11,12 or ceramic composites 13 in oxygen-containing atmospheres. However, we could not find in the literature columnar titanium nitride microstructures, neither on the surface of irradiated TiN nor Ti in reactive nitrogen atmosphere.…”

Section: Introductionsupporting

confidence: 70%

Microcolumn development on titanium by multipulse laser irradiation in nitrogen

et al. 2003

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We report the growth of titanium nitride microcolumns under multipulse Nd:yttrium aluminum garnet ( ‫ס‬ 1.064 m, ∼ 300 ns, ‫ס‬ 30 kHz) laser irradiation of titanium targets in nitrogen atmosphere. The laser intensity value was chosen below the single-pulse melting threshold of titanium. The evolution with the number of laser pulses of the target morphology, crystalline state, and chemical composition at the surface as well as in depth were investigated by scanning electron microscopy, x-ray diffractometry, Raman spectroscopy, and wavelength dispersive x-ray spectroscopy. Under the action of the laser pulses, during progressive surface nitridation, an initial rippled morphology developed, which evolved with further irradiation to TiN microcolumns. In-depth investigations showed a granular zone beneath the surface consisting of rutile and anatase phase TiO 2 , followed by a compact needlelike layer of titanium until the interface with the unaffected target material.

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Section: Introductionsupporting

confidence: 70%

Microcolumn development on titanium by multipulse laser irradiation in nitrogen

et al. 2003

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“…Most of the work reported in the literature concerning either laser melting or ablation of ceramics has dealt with essentially pure oxides, nitrides, or carbides, or mixtures thereof, as well as clay bricks. [6][7][8][9][10][11][12][13][14][15] A good number of literature reports and patents have appeared, where CO 2 lasers have been used to process ceramic surfaces or bulk. [16][17][18][19] A distinct difference is known to characterize mid-IR (CO 2 ) and nIR (Nd:YAG) laser processing from an optical absorption point of view.…”

Section: Introductionmentioning

confidence: 99%

Laser Engraving of Ceramic Tiles

Lahoz

Fuente

Pedra

et al. 2011

International Journal of Applied Ceramic Technology

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Industrial ceramic tiles were subjected to ablation in air using a pulsed Nd:YAG laser under varying repetitive scanning and laser irradiance conditions. Two distinct photothermal ablation regimes were identified related to vaporization (<70 MW/mm2, vapor plume) and species breakdown (>70 MW/mm2, plasma plume) processes. X‐ray diffraction and scanning electron microscopic studies indicated that the ablation of red clay and porcelain tiles followed different paths. Surface melting in clay tiles reduced the efficiency of ablation as the number of cycles and irradiance increased. The method enables high‐definition, noncontact engraving in industrial ceramic surfaces.

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“…Through relative movements of the laser beam and the workpiece, the microcraters produced by individual laser pulses sequentially cover complete layers of the part. The LM process is exible and can be employed in a wide range of applications, from one-off part production to the manufacture of small batches [38][39][40].…”

Section: Materials Removal Processesmentioning

confidence: 99%

Rapid prototyping and rapid tooling—the key enablers for rapid manufacturing

Pham

Dimov

2003

Proceedings of the Institution of Mechanical Engineers, Part C:

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Rapid manufacturing is a new mode of operation that can greatly improve the competitive position of companies adopting it. The key enabling technologies of rapid manufacturing are rapid prototyping (RP) and rapid tooling (RT). This paper classifies the existing RP processes and briefly describes those with actual or potential commercial impact. The paper then discusses five important RP applications: building functional prototypes, producing casting patterns, making medical and surgical models, creating artworks and fabricating models to assist engineering analysis. Finally, the paper gives an overview of indirect and direct RT methods for quickly producing up to several thousand parts together with examples illustrating different applications of RT.

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XeCl laser ablation of Al2O3–TiC ceramics

Cited by 17 publications

References 18 publications

Microcolumn development on titanium by multipulse laser irradiation in nitrogen

Microcolumn development on titanium by multipulse laser irradiation in nitrogen

Laser Engraving of Ceramic Tiles

Rapid prototyping and rapid tooling—the key enablers for rapid manufacturing

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