Pulsed laser driven deposition of spattered molten particles and its application to the manufacturing of wear-resistant coatings
- 18 July 2002
- journal article
- Published by Laser Institute of America in Journal of Laser Applications
- Vol. 14 (3) , 191-197
- https://doi.org/10.2351/1.1494955
Abstract
In this article, we report on a new process for manufacturing metal coatings with submillimeter thickness by pulsed laser driven deposition of molten metal particles. The process of “laser spattering of molten particles” using a high pulse-energy laser is considered to be effective compared to the conventional physical vapor process based on vaporized ultrafine particle generation in vacuum, because the energy required for melting the material is much lower than that for vaporizing it. In this process, the substrate is irradiated with another laser to obtain a close coating and various hard layers in it. We studied the productivity of spattered molten particles of metals (Fe, Ni, Cr, Cu, Mo, and W), and the morphology of the coatings. We applied this process to the manufacturing of wear-resistant coatings such as cast iron–molybdenum compound coatings. They showed good wear characteristics.Keywords
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