Item


Mechanochemical reactions in nanocrystalline Cu-Fe system induced by mechanical alloying in air atmosphere

Metastable nanocrystalline FCC and BCC Fe-Cu solid solutions were synthesized from elemental powders using a high-energy ball mill in air atmosphere. The structural and morphological changes during mechanical milling were investigated by X-ray diffraction and scanning electron microscopy. The patterns so obtained were analyzed using the X’Pert High Score Plus program. The final product of the mechanical alloying process was nanocrystalline double-phase FCC Cu(Fe) and BCC Fe(Cu) solid solutions with a mean crystallite size in the range of a few nanometers. Moreover, the mechanical alloying of Fe-Cu, in air atmosphere, resulted in partial oxidation to Cu 2O and CuO. Prolonged milling supported the formation of CuO oxide and the interdiffusion between FCC-Cu(Fe), BCC-Fe(Cu) and cupric oxide (CuO). Scanning electron microscopy results showed that flattened Fe-Cu powders were laid and welded on each other and tended to form a matrix of randomly welded thin layers of highly deformed particles

This work has been supported by Spanish MEC under project MAT2009-13108-C02-02 and by Catalan DURSI under project 2009 SGR374

Elsevier

Manager: Ministerio de Ciencia e Innovación (Espanya)
Author: Azabou, Myriam
Ibn Gharsallah, Hana
Escoda i Acero, Ma. Lluïsa
Suñol Martínez, Joan Josep
Kolsi, A.W.
Khitouni, Mohamed
Date: 2012 July 1
Abstract: Metastable nanocrystalline FCC and BCC Fe-Cu solid solutions were synthesized from elemental powders using a high-energy ball mill in air atmosphere. The structural and morphological changes during mechanical milling were investigated by X-ray diffraction and scanning electron microscopy. The patterns so obtained were analyzed using the X’Pert High Score Plus program. The final product of the mechanical alloying process was nanocrystalline double-phase FCC Cu(Fe) and BCC Fe(Cu) solid solutions with a mean crystallite size in the range of a few nanometers. Moreover, the mechanical alloying of Fe-Cu, in air atmosphere, resulted in partial oxidation to Cu 2O and CuO. Prolonged milling supported the formation of CuO oxide and the interdiffusion between FCC-Cu(Fe), BCC-Fe(Cu) and cupric oxide (CuO). Scanning electron microscopy results showed that flattened Fe-Cu powders were laid and welded on each other and tended to form a matrix of randomly welded thin layers of highly deformed particles
This work has been supported by Spanish MEC under project MAT2009-13108-C02-02 and by Catalan DURSI under project 2009 SGR374
Format: application/pdf
Document access: http://hdl.handle.net/10256/12834
Language: eng
Publisher: Elsevier
Collection: info:eu-repo/semantics/altIdentifier/doi/10.1016/j.powtec.2012.03.016
info:eu-repo/semantics/altIdentifier/issn/0032-5910
info:eu-repo/grantAgreement/MICINN//MAT2009-13108-C02-02/ES/Propiedades Funcionales De Microsistemas Basados En Aleaciones Magneticas Amorfas Y Cristalinas Obtenidos Mediante Enfriamiento Ultrarrapido/
Rights: Tots els drets reservats
Subject: Ã’xid de coure
Copper oxide
Aliatges
Alloys
Raigs X -- Difracció
X-rays -- Diffraction
Title: Mechanochemical reactions in nanocrystalline Cu-Fe system induced by mechanical alloying in air atmosphere
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

Subjects

Authors