|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||High Entropy Alloys VI
||In-situ Synchrotron X-ray Diffraction Characterization of High Entropy Alloys for Hydrogen Storage Applications
||Guilherme Zepon, Daniel Rodrigo Leiva, Renato Belli Strozi, Vinicius Aranda, Santiago J. A. Figueroa, Walter José Botta
|On-Site Speaker (Planned)
Hydrogen is considered the ideal energy carrier because of its heating power and the possibility of using it in a fuel cell, therefore with efficiency and producing only water as by-product. Our research group has been working on development of new compositions of high entropy alloys processed by high energy ball milling (HEBM) or reactive milling (RM) searching for compositions with good hydrogen storage properties. The Mg<sub>0,22</sub>Zr<sub>0,22</sub>Ti<sub>0,22</sub>Fe<sub>0,11</sub>Co<sub>0,11</sub>Ni<sub>0,11</sub> HEA produced by HEBM presented a BCC structure that can absorb about 1.25%wt. of hydrogen. It was shown that during absorption this alloy undergo to phase transformation during hydrogen absorption/desorption. The phase transition of different HEA of the Mg-Zr-Ti-Fe-Co-Ni were evaluated by in-situ synchrotron X-ray diffraction during heating and under hydrogen pressure (up to 20 bar) and other structural characterization techniques such as DSC, TEM and kinetics measurements in Sievert apparatus. It was found HEA compositions with promising hydrogen storage properties.
||Planned: Supplemental Proceedings volume