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

Materials Research

R.m. Ribeiro¹  L.f. Lemus¹  D.s. Dos Santos¹ 

[1] ,Federal University of Rio de Janeiro - UFRJ Alberto Luiz Coimbra Institute for Graduate Studies and Research in Engineering - COPPE Program of Metallurgical and Materials Engineering - PEMMRio de Janeiro RJ ,Brazil

关键词: hydrogen absorption;    Ti-Ni alloy;    Ti-Zr-Ni alloy;   

DOI  :  10.1590/S1516-14392013005000049

来源: SciELO

【 摘 要 】

The hydrogen absorption and desorption of Ti53Zr27Ni20 icosahedral quasicrystal (ICQ) and Ti50Ni50 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 Ti53Zr27Ni20 and Ti50Ni50 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 Ti53Zr27Ni20 i-phase alloy, while the Ti50Ni50 alloy remained crystalline after hydride formation.

【 授权许可】

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