Superior hydrogenation properties in a Mg65Ce10Ni20Cu5 nanoglass processed by melt-spinning followed by high-pressure torsion. (15th July 2018)

• Record Type: Journal Article
• Authors: Xu, Cheng; Lin, Huai-Jun; Edalati, Kaveh; Li, Wei; Li, Liquan; Zhu, Yunfeng
• Is Part Of: Scripta materialia. Number 152(2018)
• Page Start: 137
• Page End: 140
• Publication Date: 2018-07-15
• Subjects: Nanoglass -- Hydrogenation -- Kinetics -- High-pressure torsion -- Severe plastic deformation; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2018.04.036
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: In an attempt to improve the hydrogenation kinetics properties of Mg-based materials, a novel Mg65 Ce10 Ni20 Cu5 nanoglass was fabricated by melt spinning followed by severe plastic deformation through the high-pressure torsion (HPT) method. The hydrogenation temperature of the nanoglass was greatly reduced with significant improvements on the hydrogenation kinetics upon three different HPT treatments. The 1 turn HPT-treated alloy shows the best hydrogenation properties with the highest capacity and fastest kinetics among the three samples. These superior hydrogenation properties were attributed to the HPT-induced abundant nanoglasses regions and interfaces among them, as pathways for hydrogen absorption. Graphical abstract: HPT is an efficient technique to reduce the hydrogenation temperature and improve the hydrogenation kinetics of amorphous alloys. The enhancements are due to the introduction of abundant nanoglasses regions and interfaces among them, which provide abundant pathways for fast hydrogenation. Unlabelled Image