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Specific interface prepared by the SPS of chemically treated Mg-based powder
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SYSNO ASEP 0546277 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Specific interface prepared by the SPS of chemically treated Mg-based powder Author(s) Dvorský, Drahomír (FZU-D) ORCID
Kubásek, Jiří (FZU-D) ORCID
Průša, F. (CZ)
Kristianová, E. (CZ)
Vojtěch, D. (CZ)Number of authors 5 Article number 124197 Source Title Materials Chemistry and Physics. - : Elsevier - ISSN 0254-0584
Roč. 261, Mar (2021)Number of pages 8 s. Language eng - English Country CH - Switzerland Keywords biomaterials ; coatings ; composites ; corrosion ; powder metallurgy Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) Method of publishing Limited access Institutional support FZU-D - RVO:68378271 UT WOS 000618786500002 EID SCOPUS 85099239917 DOI 10.1016/j.matchemphys.2020.124197 Annotation This work focuses on a new way of preparation of magnesium-based composite materials by powder metallurgy. This method consists of combination of chemical treatment of magnesium powder in hydrofluoric acid and subsequent compaction by spark plasma sintering. As a result a continuous network of magnesium fluoride coating is created inside material. However, magnesium alloys behave differently in hydrofluoric acid. In the case of WE43 alloy a network consisting of magnesium fluoride and newly emerged yttrium fluoride is prepared. This specific interface of the prepared composite material resulted in a corrosion rate that was three times lower compared to that of the sample sintered without chemical treatment. The cause of improvement of corrosion properties is illustratively shown on the cuts of the samples after immersion. The corrosion front is slowed down on the fluoride interface. The presence of yttrium fluoride phases on the interface slightly reduced mechanical properties. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2022 Electronic address https://doi.org/10.1016/j.matchemphys.2020.124197
Number of the records: 1