Title :
Hydrogen permeation properties of in-situ Ti-based bulk metallic glass matrix composite membranes
Author :
Geiller, Tristan ; Kim, Min-Hyun ; Kim, Yu-Chan ; Suh, Jin-Yoo ; Fleury, Eric
Author_Institution :
Univ. of Technol. of Troyes, Troyes, France
Abstract :
A new concept of crystalline phase embedded in amorphous matrix is proposed as solid permeable material for the separation and purification of hydrogen. A β-(Ti,Zr,Nb) crystalline phase forms in the liquid during the cooling of Nb-containing Ti-based bulk metallic glasses (BMGs). The β-(Ti,Zr,Nb) body centered cubic phase composed of group 4 and 5 elements of the periodic table provides remarkable hydrogen permeation properties, which are superior to those of palladium alloys. The hydrogen permeability of those in-situ Ti-based BMG matrix composites has been investigated as a function of the volume fraction of crystalline phase at 623K and for the inner pressure of 1.75bar.
Keywords :
beryllium alloys; composite materials; copper alloys; crystal purification; membranes; metallic glasses; nickel alloys; niobium alloys; permeability; phase separation; separation; titanium alloys; zirconium alloys; (Ti45Zr16Be20Cu10Ni9)Nbx; amorphous matrix; body centered cubic phase; crystalline phase; crystalline phase forms; hydrogen permeation properties; hydrogen purification; hydrogen separation; in-situ based bulk metallic glass matrix composite membranes; palladium alloys; periodic table; pressure 1.75 bar; solid permeable material; temperature 623 K; volume fraction; Chemicals; Glass; Nickel; Niobium; X-ray scattering; Zirconium;
Conference_Titel :
Nanotechnology Materials and Devices Conference (NMDC), 2011 IEEE
Conference_Location :
Jeju
Print_ISBN :
978-1-4577-2139-7
DOI :
10.1109/NMDC.2011.6155410
