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. 2020 May 19;13(10):2331. doi: 10.3390/ma13102331

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Surface images of the samples after the scratch test of the WC25-Cu75 coating (magnification x10). (a) Before laser processing; (b) After laser processing.