Hydrogen permeation and structural features of melt-spun Ni–Nb–Zr amorphous alloys

2005 ◽  
Vol 53 (13) ◽  
pp. 3703-3711 ◽  
Author(s):  
Shin-ichi Yamaura ◽  
Masaki Sakurai ◽  
Masashi Hasegawa ◽  
Kimio Wakoh ◽  
Yoichiro Shimpo ◽  
...  
Keyword(s):  
Amorphous Alloys ◽  
Hydrogen Permeation ◽  
Structural Features ◽  
Melt Spun

Hydrogen Permeation Characteristics and Structural Features of Melt-Spun Ni-Nb-Zr Amorphous Alloy Membranes

2005 ◽  
Vol 24-25 ◽  
pp. 315-318
Author(s):  
Shinichi Yamaura ◽  
K. Wakoh ◽  
Hisamichi Kimura ◽  
Eiichiro Matsubara ◽  
Akihisa Inoue ◽  
...  
Keyword(s):  
Amorphous Alloy ◽  
Hydrogen Permeation ◽  
Structural Features ◽  
Melt Spun

scholarly journals The Effect of Additional Elements on Hydrogen Permeation Properties of Melt-Spun Ni-Nb-Zr Amorphous Alloys

2004 ◽  
Vol 68 (12) ◽  
pp. 1039-1042
Author(s):  
Shin-ichi Yamaura ◽  
Yoichiro Shimpo ◽  
Hitoshi Okouchi ◽  
Motonori Nishida ◽  
Osamu Kajita ◽  
...  
Keyword(s):  
Amorphous Alloys ◽  
Hydrogen Permeation ◽  
Melt Spun ◽  
Permeation Properties

scholarly journals The Effect of Additional Elements on Hydrogen Permeation Properties of Melt-Spun Ni-Nb-Zr Amorphous Alloys

2004 ◽  
Vol 45 (2) ◽  
pp. 330-333 ◽  
Author(s):  
Shin-ichi Yamaura ◽  
Yoichiro Shimpo ◽  
Hitoshi Okouchi ◽  
Motonori Nishida ◽  
Osamu Kajita ◽  
...  
Keyword(s):  
Amorphous Alloys ◽  
Hydrogen Permeation ◽  
Melt Spun ◽  
Permeation Properties

Discharge capacities of melt-spun Mg–Ni–Pd amorphous alloys

2003 ◽  
Vol 358 (1-2) ◽  
pp. 173-176 ◽  
Author(s):  
Shin-ichi Yamaura ◽  
Hisamichi Kimura ◽  
Akihisa Inoue
Keyword(s):  
Amorphous Alloys ◽  
Melt Spun ◽  
Discharge Capacities

Coercivity through controlled crystallization in melt-spun NdFeB amorphous alloys

1992 ◽  
Vol 182 (2) ◽  
pp. 211-221 ◽  
Author(s):  
M.T. Clavaguera-Mora ◽  
J.A. Diego ◽  
M.D. Baró ◽  
S. Surifiach ◽  
N. Clavaguera ◽  
...  
Keyword(s):  
Amorphous Alloys ◽  
Melt Spun ◽  
Controlled Crystallization

Hydrogen permeation characteristics of melt-spun Zr60Al15Co2.5Ni7.5Cu15 glassy alloy membrane

2004 ◽  
Vol 372 (1-2) ◽  
pp. 197-200 ◽  
Author(s):  
Yoichiro Shimpo ◽  
Shin-ichi Yamaura ◽  
Hitoshi Okouchi ◽  
Motonori Nishida ◽  
Osamu Kajita ◽  
...  
Keyword(s):  
Hydrogen Permeation ◽  
Glassy Alloy ◽  
Melt Spun

scholarly journals Structural Analysis of Melt-Spun MgxPd100−x (x=70, 80, 85 and 90) Amorphous Alloys

2005 ◽  
Vol 46 (2) ◽  
pp. 379-381 ◽  
Author(s):  
Sumiaki Nakano ◽  
Sin-ichi Yamaura ◽  
Akiko Kitano ◽  
Masugu Sato ◽  
Norimasa Umesaki ◽  
...  
Keyword(s):  
Structural Analysis ◽  
Amorphous Alloys ◽  
Melt Spun

Micromechanical Testing of Nanostructured NbTiNi Hydrogen Permeation Membranes

2009 ◽  
Vol 1224 ◽  
Author(s):  
Tetsuya Kusuno ◽  
Yusuke Shimada ◽  
Mitsuhiro Matsuda ◽  
Masaaki Otsu ◽  
Kazuki Takashima ◽  
...  
Keyword(s):  
Thin Films ◽  
Mechanical Properties ◽  
Fracture Toughness ◽  
Hydrogen Permeation ◽  
Ion Beam ◽  
Testing Machine ◽  
Transgranular Fracture ◽  
Heat Treated ◽  
Ni Alloy ◽  
Melt Spun

AbstractNb-Ti-Ni alloy is one of the candidates for hydrogen permeation membranes. The hydrogen permeability of a membrane depends on its thickness, and mechanical properties such as the fracture toughness of the membrane are important to ensure reliability and durability. In the present work, micro-mechanical tests have been carried out for melt-spun Nb-Ti-Ni thin films consisting of amorphous and nano-crystalline phases. The relationship between the mechanical properties of the melt-spun films and the microstructural changes occurring in the films due to heat treatment has been also discussed. The Nb-Ti-Ni alloy thin films were prepared by the melt-spun technique and then heat-treated at 873-1173 K. Micro-sized cantilever specimens with dimensions of 10 × 10 × 50 μm3 were prepared by focused ion beam (FIB) machining. Fracture tests were carried out using a mechanical testing machine for the micro-sized specimens; the testing machine was developed by us. In addition, microstructures were observed by transmission electron microscopy (TEM). The fracture toughness (KQ) value decreased up to 823 K, and it increased above 1173 K. The specimen heat-treated above 1173 K showed ductile fracture. The fracture morphology of the specimen heat-treated up to 1023 K showed grain boundary fracture characteristics, and that of the specimen heat-treated at 1173 K changed to transgranular fracture.

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