Microstructure Characterization and Properties of Intermetallic Alloys/Amorphous Alloys
A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Metals and Alloys".
Deadline for manuscript submissions: 20 October 2024 | Viewed by 250
Special Issue Editor
Special Issue Information
Dear Colleagues,
Satisfying the constantly and rapidly growing need for novel materials with possible industrial applications is one of the most important challenges for science today. In particular, intermetallic compounds, which are solid phases involving two or more metallic elements whose crystal structure is different from that of their constituents, have recently been of interest due to their unique chemical, magnetic, and superconducting properties as well as their increased strength. Moreover, amorphous alloys have sparked substantial interest because of their possible applications for shape-memory alloys and coatings as materials for biotechnology and hydrogen storage.
Special Issue welcomes contributions focused on the characterization of the microstructural of the intermetallics and the amorphous alloys.
Dr. Joanna Czub
Guest Editor
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Keywords
- microstructure
- characterization
- microstructural properties
- intermetallics
- intermetallic alloys
- amorphous alloys
- nanomaterials
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Planned Papers
The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.
Title: Hydrogenation properties of the Ti45Zr35-xYxNi17 (5 ≤ x ≤ 10) and the Ti45-zYzZr38-xYxNi17 (5 ≤ z ≤ 15) mechanically alloyed materials
Authors: Joanna Czub; Akito Takasaki; Andreas Hoser; Manfred Reehuis; Łukasz Gondek
Affiliation: AGH University of Krakow
Abstract: The amorphous materials of the Ti45Zr38Ni17 composition synthesized by mechanical alloying are widely recognized for their ability to store hydrogen with the gravimetric densities above 2 wt.%. It is also known that those alloys can form a quasicrystalline state after thermal treatment and their structural and hydrogen sorption properties can be altered by doping with various elements. Therefore, in this contribution, we present the results of the studies on the Ti45Zr38Ni17 system with yttrium substituted for titanium and zirconium. We show that such alloys can absorb hydrogen maintaining the amorphous state and transform into the novel glassy-quasicrystal phase during annealing. Furthermore, we demonstrate that the in-situ hydrogenation of those new materials is an effortless procedure in which decomposition of the alloy can be avoided. Moreover, we prove that in that process, the hydrogen does not attach to any specified constituent of the alloy, what would result in the formation of simple hydrides or nanoclusters.
