نتایج جستجو برای: nanocrystalline ni

تعداد نتایج: 62436  

2014
M. Balcerzak

In this work TiNi-based nanocrystalline alloys and composite were produced by mechanical alloying process with subsequent annealing at 750 ◦C for 0.5 h. Mechanical alloying was performed in a SPEX 8000 Mixer Mill. TiNi alloy was chemically modi ed by Ag elemental powder. Silver content equaled 5 wt%. X-ray di raction analyses revealed formation of TiNi main phase after annealing. Additionally, ...

2005
Tae-Jin Park Sarbajit Banerjee Tirandai Hemraj-Benny Stanislaus S. Wong

Traditionally, SWNTs have been prepared by electric arc-discharge, laser ablation, or chemical vapor deposition (CVD) methods, yielding tubes of various diameter and length distributions. However, without exception, as-prepared SWNTs are contaminated with a number of impurities, decreasing the overall yield of usable material. Impurities include transition metal catalysts, such as Fe, Co, and N...

Journal: :Magnetochemistry 2023

Nanosheets composed of stacked atomic layers exhibit unique magnetic, electrical, and electrochemical properties. Here, we report the effect iron substitution on structure magnetism nickel hydroxide, Ni(OH)2, nanosheets. Ni(OH)2 iron-substituted (5, 10, 20, 50 % Fe substitution) were synthesized using a rapid microwave-assisted hydrothermal process. Scanning transmission electron microscopy sho...

2002
Y. B. Park J. Park C. S. Ha T. H. Yim

The texture evolution accompanied by grain growth was investigated in a nanocrystalline Fe-78wt%Ni alloy, namely permalloy fabricated by using an electrodeposition method. The as-deposited specimen revealed a strong <100>//ND and a weak <111>//ND fibre-type textures. Grain growth took place during annealing beyond 370°C and resulted in the texture change such that the <111>//ND fibre strongly d...

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