Please use this identifier to cite or link to this item: doi:10.22028/D291-34589
Title: Influence of Processing Route on the Surface Reactivity of Cu47Ti33Zr11Ni6Sn2Si1 Metallic Glass
Author(s): Soares Barreto, Erika
Uhlenwinkel, Volker
Frey, Maximilian
Gallino, Isabella
Busch, Ralf
Lüttge, Andreas
Language: English
Title: Metals
Volume: 11
Issue: 8
Publisher/Platform: MDPI
Year of Publication: 2021
Free key words: metallic glasses
surface reactivity
additive manufacturing
elemental mapping distribution
vertical scanning interferometry
DDC notations: 500 Science
Publikation type: Journal Article
Abstract: Recently, laser additive manufacturing (AM) techniques have emerged as a promising alternative for the synthesis of bulk metallic glasses (BMGs) with massively increased freedom in part size and geometry, thus extending their economic applicability of this material class. Nevertheless, porosity, compositional inhomogeneity, and crystallization display themselves to be the emerging challenges for this processing route. The impact of these “defects” on the surface reactivity and susceptibility to corrosion was seldom investigated but is critical for the further development of 3D-printed BMGs. This work compares the surface reactivity of cast and additively manufactured (via laser powder bed fusion—LPBF) Cu47Ti33Zr11Ni6Sn2Si1 metallic glass after 21 days of immersion in a corrosive HCl solution. The cast material presents lower oxygen content, homogeneous chemical distribution of the main elements, and the surface remains unaffected after the corrosion experimentation based on vertical scanning interferometry (VSI) investigation. On the contrary, the LPBF material presents a considerably higher reactivity seen through crack propagations on the surface. It exhibits higher oxygen content, heterogeneous chemical distribution, and presence of defects (porosity and cracks) generated during the manufacturing process.
DOI of the first publication: 10.3390/met11081173
Link to this record: urn:nbn:de:bsz:291--ds-345896
ISSN: 2075-4701
Date of registration: 30-Aug-2021
Faculty: NT - Naturwissenschaftlich- Technische Fakultät
Department: NT - Materialwissenschaft und Werkstofftechnik
Professorship: NT - Prof. Dr. Ralf Busch
Collections:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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