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Selective laser densification of lithium aluminosilicate glass ceramic tapes

2012; Elsevier BV; Volume: 265; Linguagem: Inglês

10.1016/j.apsusc.2012.11.058

1873-5584

Andrea Zocca, Paolo Colombo, Jens Günster, Thomas Mühler, Jürgen G. Heinrich,

Glass properties and applications

Tapes, cast by blade deposition of a lithium aluminosilicate glass slurry, were sintered using a YAG-fiber laser, with the aim of finding suitable parameters for an additive manufacturing process based on layer-wise slurry deposition and selective laser densification. The influence of the laser parameters (output power and scan velocity) on the sintering was evaluated, by scanning electron microscopy and by X-ray diffraction, on the basis of the quality of the processed layer. Well densified samples could be obtained only in a small window of values for the output power and the scan velocity. The measurement of the width of a set of single scanned lines allowed also to estimate the minimum resolution of the system along the layer plane.