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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 April 2025 | Viewed by 834

Special Issue Editor


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Guest Editor
Faculty of Physics and Applied Computer Science, AGH University of Krakow, Mickiewicza 30, 30-059, Krakow, Poland
Interests: solid-state physics; materials physics; nanomaterials; hydrogen-storage materials; amorphous alloys; quasicrystalline alloys

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

Manuscript Submission Information

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Keywords

  • microstructure
  • characterization
  • microstructural properties
  • intermetallics
  • intermetallic alloys
  • amorphous alloys
  • nanomaterials

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Published Papers (1 paper)

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Research

13 pages, 7200 KiB  
Article
Hydrogenation Properties of the Ti45Zr38−xYxNi17 (5 ≤ x ≤ 10) and the Ti45−zYzZr38Ni17 (5 ≤ z ≤ 15) Mechanically Alloyed Materials
by Joanna Czub, Akito Takasaki, Andreas Hoser, Manfred Reehuis and Łukasz Gondek
Materials 2024, 17(20), 4946; https://doi.org/10.3390/ma17204946 - 10 Oct 2024
Viewed by 512
Abstract
The amorphous materials of the Ti45Zr38Ni17 composition synthesized by mechanical alloying are widely recognized for their ability to store hydrogen with gravimetric densities above 2 wt.%. It is also known that those alloys can form a quasicrystalline state [...] Read more.
The amorphous materials of the Ti45Zr38Ni17 composition synthesized by mechanical alloying are widely recognized for their ability to store hydrogen with 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 paper, the results of the studies on the Ti45Zr38Ni17 system with yttrium substituted for titanium and zirconium are presented. We demonstrate that these alloys are able to absorb hydrogen with a concentration of up to 2.7 wt.% while retaining their amorphous structure and they transform into the unique glassy-quasicrystal phase upon annealing. Furthermore, we demonstrate that the in-situ hydrogenation of those new materials is an effortless procedure in which the decomposition of the alloy can be avoided. Moreover, we prove that, in that process, hydrogen does not bind to any specific component of the alloy, which would otherwise cause the formation of simple hydrides or nanoclusters. Full article
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