scholarly journals Hydrolytic Hydrogen Production on Al–Sn–Zn Alloys Processed by High-Pressure Torsion

Materials ◽  
2018 ◽  
Vol 11 (7) ◽  
pp. 1209 ◽  
Author(s):  
Fan Zhang ◽  
Kaveh Edalati ◽  
Makoto Arita ◽  
Zenji Horita
Keyword(s):  
High Pressure ◽  
Hydrogen Production ◽  
Shear Strain ◽  
Pitting Corrosion ◽  
Hydrogen Generation ◽  
High Pressure Torsion ◽  
Generation Rate ◽  
Phase Mixing ◽  
Zn Alloy ◽  
Zn Alloys

Aluminium-tin-based alloys with different compositions were synthesized by a high-pressure torsion (HPT) method. The effect of different alloying elements and processing routes on the hydrogen generation performance of the alloys was investigated. The results show that Zn can enhance the hydrogen generation rate and yield by promoting pitting corrosion. The highest reactivity in water was achieved for an Al-30wt %Sn-10wt %Zn alloy. Detailed analysis of the Al-30wt %Sn-10wt %Zn alloy shows that increasing the shear strain and the resultant formation of ultrafine grains and phase mixing enhance the hydrogen generation rate through the effects of both nanogalvanic cells and pitting corrosion.

Grain boundary films in Al–Zn alloys after high pressure torsion

2014 ◽  
Vol 70 ◽  
pp. 59-62 ◽  
Author(s):  
B.B. Straumal ◽  
X. Sauvage ◽  
B. Baretzky ◽  
A.A. Mazilkin ◽  
R.Z. Valiev
Keyword(s):  
High Pressure ◽  
Grain Boundary ◽  
High Pressure Torsion ◽  
Boundary Films ◽  
Zn Alloys

Hydrogen generation from pure water using Al–Sn powders consolidated through high-pressure torsion

2016 ◽  
Vol 31 (6) ◽  
pp. 775-782 ◽  
Author(s):  
Fan Zhang ◽  
Ryo Yonemoto ◽  
Makoto Arita ◽  
Zenji Horita
Keyword(s):  
High Pressure ◽  
Hydrogen Generation ◽  
High Pressure Torsion ◽  
Pure Water ◽  
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Abstract

scholarly journals Influence of Zn content on the microstructure and mechanical performance of ultrafine-grained Al–Zn alloys processed by high-pressure torsion

2017 ◽  
Vol 186 ◽  
pp. 334-337 ◽  
Author(s):  
Nguyen Q. Chinh ◽  
Péter Jenei ◽  
Jenő Gubicza ◽  
Elena V. Bobruk ◽  
Ruslan Z. Valiev ◽  
...  
Keyword(s):  
High Pressure ◽  
Mechanical Performance ◽  
High Pressure Torsion ◽  
Ultrafine Grained ◽  
Zn Content ◽  
Zn Alloys

scholarly journals Effects of High-Pressure Torsion on the Pitting Corrosion Resistance of Aluminum–Iron Alloys

2013 ◽  
Vol 54 (9) ◽  
pp. 1642-1649 ◽  
Author(s):  
Hiroaki Nakano ◽  
Hiroto Yamaguchi ◽  
Yohei Yamada ◽  
Satoshi Oue ◽  
In-Joon Son ◽  
...  
Keyword(s):  
High Pressure ◽  
Corrosion Resistance ◽  
Pitting Corrosion ◽  
High Pressure Torsion ◽  
Iron Alloys ◽  
Pitting Corrosion Resistance

Characterizing Microstructural and Mechanical Properties of Al–Zn Alloys Processed by High‐Pressure Torsion

2019 ◽  
Vol 22 (1) ◽  
pp. 1900672 ◽  
Author(s):  
Nguyen Q. Chinh ◽  
Péter Szommer ◽  
Jenő Gubicza ◽  
Moustafa El-Tahawy ◽  
Elena V. Bobruk ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Pressure ◽  
High Pressure Torsion ◽  
Zn Alloys

Formation of Bulk Nanostructured Al3Ni from Elemental Micropowders Using High-Pressure Torsion

2013 ◽  
Vol 765 ◽  
pp. 378-382 ◽  
Author(s):  
Ali Alhamidi ◽  
Kaveh Edalati ◽  
Zen Ji Horita
Keyword(s):  
High Pressure ◽  
Diffusion Coefficient ◽  
Shear Strain ◽  
Melting Temperature ◽  
High Pressure Torsion ◽  
Processing Temperature ◽  
Powder Mixtures

The formation of bulk nanograined Al3Ni intermetallics from elemental micro-powder mixtures of Al-25 mol.% Ni are studied after processing by high-pressure torsion (HPT) for various turns at 473 K and at 573 K. It is found that nanograined Al3Ni intermetallics with high angles of misorientation are produced at temperatures well below the melting temperature. The fraction of Al3Ni intermetallics increases by increasing the shear strain and increasing the HPT processing temperature. During HPT, both Ni and Al atoms diffuse significantly in each other with a diffusion coefficient well comparable to the atomic interdiffusion in the Al3Ni intermetallic at its melting temperature.

scholarly journals Impact of TiO2-II phase stabilized in anatase matrix by high-pressure torsion on electrocatalytic hydrogen production

2019 ◽  
Vol 7 (8) ◽  
pp. 334-339 ◽  
Author(s):  
Kaveh Edalati ◽  
Qing Wang ◽  
Hiroto Eguchi ◽  
Hadi Razavi-Khosroshahi ◽  
Hoda Emami ◽  
...  
Keyword(s):  
High Pressure ◽  
Hydrogen Production ◽  
High Pressure Torsion

scholarly journals Assessment of homogeneity of the shear-strain pattern in Al–7wt%Si casting alloy processed by high-pressure torsion

2014 ◽  
Vol 597 ◽  
pp. 102-110 ◽  
Author(s):  
C.M. Cepeda-Jiménez ◽  
A. Orozco-Caballero ◽  
J.M. García-Infanta ◽  
A.P. Zhilyaev ◽  
O.A. Ruano ◽  
...  
Keyword(s):  
High Pressure ◽  
Shear Strain ◽  
High Pressure Torsion ◽  
Casting Alloy ◽  
Strain Pattern

Structural and hardness inhomogeneities in Mg–Al–Zn alloys processed by high-pressure torsion

2013 ◽  
Vol 48 (13) ◽  
pp. 4661-4670 ◽  
Author(s):  
Ahmed Al-Zubaydi ◽  
Roberto B. Figueiredo ◽  
Yi Huang ◽  
Terence G. Langdon
Keyword(s):  
High Pressure ◽  
High Pressure Torsion ◽  
Zn Alloys
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