Hydrogen absorption study of ti-based alloys performed by melt-spinning

• Published in: Materials research (São Carlos, São Paulo, Brazil) Vol. 16; no. 3; pp. 679 - 682
• Main Authors: Ribeiro, R M, Lemus, L F, dos Santos, DS
• Format: Journal Article
• Language: English; Portuguese
• Published: ABM, ABC, ABPol 01-06-2013; Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
• Subjects: Alloys; Desorption; Diffraction patterns; ENGINEERING, CHEMICAL; hydrogen absorption; Hydrogen storage; MATERIALS SCIENCE, MULTIDISCIPLINARY; Melt spinning; METALLURGY & METALLURGICAL ENGINEERING; Ribbons; Shape memory alloys; Ti-Ni alloy; Ti-Zr-Ni alloy; Titanium base alloys; Ti-Zr-Ni alloy; hydrogen absorption; Ti-Ni alloy
• ISSN: 1516-1439; 1980-5373; 1980-5373
• DOI: 10.1590/S1516-14392013005000049

The hydrogen absorption and desorption of Ti sub(53)Zr sub(27)Ni sub(20) icosahedral quasicrystal (ICQ) and Ti sub(50)Ni sub(50) shape memory alloy (SMA) melt-spun ribbons was studied. Samples were exposed to hydrogen gas at 623 K and 4 MPa for 1000 minutes. The total capacity of hydrogen obtained for Ti sub(53)Zr sub(27)Ni sub(20) and Ti sub(50)Ni sub(50) was 3.2 and 2.4 wt. % respectively. The Thermal Desorption Spectrometry (TDS) of the hydrogenated alloys shows that both alloys start to desorb hydrogen around 750 K. X-ray diffraction (XRD) patterns, performed after hydrogenation, indicate a complete amorphization of the Ti sub(53)Zr sub(27)Ni sub(20) i-phase alloy, while the Ti sub(50)Ni sub(50) alloy remained crystalline after hydride formation.