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Influence of the surface roughness and pulse energy in the production of dimple features on Cr<inf>2</inf>O<inf>3</inf> surfaces

Ahuir-Torres, JI, Sharp, MC and Seddighi, M (2020) Influence of the surface roughness and pulse energy in the production of dimple features on Cr<inf>2</inf>O<inf>3</inf> surfaces. In: Procedia CIRP , 94. pp. 930-935. (11th CIRP Conference on Photonic Technologies, Virtual Conference, 7-10th September 2020).

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Abstract

Laser dimple generation can functionalise ceramic surfaces. Dimple characteristics determine the functionalised surface properties, which has numerous applications. Laser parameters and material properties are key factors in the design of the dimple features. Pulse energy, Ep, and average surface roughness, Ra, are important parameters in the dimple production. Thus, the influence of the Ep of InfraRed (IR) nanosecond pulsed laser on the dimple characteristics generated on two Cr2O3 surfaces (as-received and polished) are studied in this work. The increase of the Ep increased the dimples features (Diameter, D, and depth, L). Polished surfaces gave dimples with increased depth while dimples produced on as-received samples were shallow. The energy fluence ablation threshold, φth, is higher for as-received surface than for polished Cr2O3. © 2020 The Authors. Published by Elsevier B.V.

Item Type: Conference or Workshop Item (Paper)
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Engineering
Publisher: Elsevier
Date Deposited: 28 Oct 2020 12:07
Last Modified: 28 Oct 2020 12:07
DOI or Identification number: 10.1016/j.procir.2020.09.096
URI: https://researchonline.ljmu.ac.uk/id/eprint/13926

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