Laser cleaning soil rust layer on the surface of ceramic artifacts

Jiawei Xu; Chenwei Wu; Fan Gao; Baoxing Xiong; Changwei Guo; Tiancheng Yu; Xiao Yuan

doi:10.1117/12.2505848

15 November 2018 Laser cleaning soil rust layer on the surface of ceramic artifacts

Jiawei Xu, Chenwei Wu, Fan Gao, Baoxing Xiong, Changwei Guo, Tiancheng Yu, Xiao Yuan

Proceedings Volume 10964, Tenth International Conference on Information Optics and Photonics; 109642O (2018) https://doi.org/10.1117/12.2505848
Event: Tenth International Conference on Information Optics and Photonics (CIOP 2018), 2018, Beijing, China

Abstract

In this paper, the laser cleaning soil rust layer on the surface of ceramic artifacts by the way of ablation and thermal stress with infrared high-repetition pulse laser is carried out. A cleaning effect can be achieved with laser scanning 10 times at the speed of 480 mm/s and fluence of 795.7747 J/m² near the ablation threshold. However, the external force is required to make the soil rust layer fallen off. In contrast, a better cleaning effect that the soil rust layer is directly peeled off under the effect of thermal stress without ablation at the contact surface and external force can be observed with the fluence of 1591.5494 J/m² and laser scanning at 1 time. Furthermore, a two-layer structure model is built to analyze the mechanism of cleaning by thermal stress based on the heat conduction and thermal stress equation. The maximum peeling thermal stress at the contact surface is 2.854×10⁷ N/m², which is greater than the adhesion stress of 2.050×10⁷ N/m². This is in agreement with experiments.

Citation Download Citation

Jiawei Xu, Chenwei Wu, Fan Gao, Baoxing Xiong, Changwei Guo, Tiancheng Yu, and Xiao Yuan "Laser cleaning soil rust layer on the surface of ceramic artifacts", Proc. SPIE 10964, Tenth International Conference on Information Optics and Photonics, 109642O (15 November 2018); https://doi.org/10.1117/12.2505848

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