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Proceedings Paper

Reflectivity and laser ablation of ZrB2/Cu ultra high temperature ceramic
Author(s): Zhenyu Yan; Zhuang Ma; Shizhen Zhu; Ling Liu; Qiang Xu
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Paper Abstract

Ultra high temperature ceramics (UHTCs) were thought to be candidates for laser protective materials due to their high melting point, thermal shock and ablation resistance. The ablation behaviors of UHTCs like ZrB2 and its composite had been intensely investigated by the means of arc, plasma, oxyacetylene ablation. However, the ablation behavior under laser irradiation was still unknown by now. In this paper, the dense bulk composites of ZrB2/Cu were successfully sintered by spark plasma sintering (SPS) at 1650 degree C for 3min. The reflectivity of the composites measured by spectrophotometry achieved 60% in near infrared range and it decreased with the increasing wavelength of incident light. High intensity laser ablation was carried out on the ZrB2/Cu surface. The phase composition and microstructure changes before and after laser irradiation were characterized by X-ray diffraction and SEM respectively. The results revealed that the oxidation and melting were the main mechanisms during the ablation processing.

Paper Details

Date Published: 16 May 2013
PDF: 7 pages
Proc. SPIE 8796, 2nd International Symposium on Laser Interaction with Matter (LIMIS 2012), 87960T (16 May 2013); doi: 10.1117/12.2011293
Show Author Affiliations
Zhenyu Yan, Beijing Institute of Technology (China)
National Key Lab. of Science and Technology (China)
Zhuang Ma, Beijing Institute of Technology (China)
National Key Lab. of Science and Technology (China)
Shizhen Zhu, Beijing Institute of Technology (China)
National Key Lab. of Science and Technology (China)
Ling Liu, Beijing Institute of Technology (China)
National Key Lab. of Science and Technology (China)
Qiang Xu, Beijing Institute of Technology (China)
National Key Lab. of Science and Technology (China)


Published in SPIE Proceedings Vol. 8796:
2nd International Symposium on Laser Interaction with Matter (LIMIS 2012)
Stefan Kaierle; Jingru Liu; Jianlin Cao, Editor(s)

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