Structure and magnetic properties of nickel nanoparticles preparedby selective leaching

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00454540" target="_blank" >RIV/68378271:_____/14:00454540 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22310/14:43897629

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.matlet.2014.09.012" target="_blank" >http://dx.doi.org/10.1016/j.matlet.2014.09.012</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.matlet.2014.09.012" target="_blank" >10.1016/j.matlet.2014.09.012</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Structure and magnetic properties of nickel nanoparticles preparedby selective leaching

Popis výsledku v původním jazyce

In this study, we propose a novel method for preparation of nanocrystalline powder precursors for powder metallurgy processing. Nickel nanocrystalline powders were prepared by selective leaching of the Al-20Ni alloys in NaOH solution. The powders were studied by SEM, TEM, XRD, magnetometry and by small angle neutron scattering. The prepared powders had internal structure formed by grains of 5-50 nm in size depending on the leaching temperature. It was also proven that slight grain coarsening occurred during heating of particles at 40-80 degrees C for one hour. Magnetometry testing revealed significantly reduced magnetization of nanocrystalline nickel which is related to the internal structure. The results indicate that nickel powders prepared by selective leaching are suitable precursor for powder metallurgical preparation of bulk products with interesting physical and possible also mechanical properties.

Název v anglickém jazyce

Structure and magnetic properties of nickel nanoparticles preparedby selective leaching

Popis výsledku anglicky

In this study, we propose a novel method for preparation of nanocrystalline powder precursors for powder metallurgy processing. Nickel nanocrystalline powders were prepared by selective leaching of the Al-20Ni alloys in NaOH solution. The powders were studied by SEM, TEM, XRD, magnetometry and by small angle neutron scattering. The prepared powders had internal structure formed by grains of 5-50 nm in size depending on the leaching temperature. It was also proven that slight grain coarsening occurred during heating of particles at 40-80 degrees C for one hour. Magnetometry testing revealed significantly reduced magnetization of nanocrystalline nickel which is related to the internal structure. The results indicate that nickel powders prepared by selective leaching are suitable precursor for powder metallurgical preparation of bulk products with interesting physical and possible also mechanical properties.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Materials Letters

ISSN

0167-577X

e-ISSN

—

Svazek periodika

137

Číslo periodika v rámci svazku

Dec

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

4

Strana od-do

221-224

Kód UT WoS článku

000345469700060

EID výsledku v databázi Scopus

2-s2.0-84907509719