A study of the composition and microstructure of nanodispersed Cu–Ni alloys obtained by different routes from copper and nickel oxides

Autores
Cangiano, Maria de Los Angeles; Ojeda, Manuel Wilfrido; Carreras, Alejo Cristian; Gonzalez, Jorge Alberto; Ruiz Salado, Maria del Carmen
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Mixtures of CuO and NiO were prepared by two different techniques, and then the oxides were reduced with H2. Method A involved the preparation of mechanical mixtures of CuO and NiO using different milling and pelletizing processes. Method B involved the chemical synthesis of the mixture of CuO and NiO. The route used to prepare the copper and nickel oxide mixture was found to have great influence on the characteristics of bimetallic Cu–Ni particles obtained. Observations performed using the X-ray diffraction (XRD) technique showed that although both methods led to the Cu–Ni solid solution, the diffractogram of the alloy obtained with method A revealed the presence of NiO together with the alloy. The temperature-programmed reduction (TPR) experiments indicated that the alloy is formed at lower temperatures when using method B. The scanning electron microscopy (SEM) studies revealed notable differences in the morphology and size distribution of the bimetallic particles synthesized by different routes. The results of the electron probe microanalysis (EPMA) studies evidenced the existence of a small amount of oxygen in both cases and demonstrated that the alloy synthesized using method B presented a homogeneous composition with a Cu–Ni ratio close to 1:1. On the contrary, the alloy obtained using method A was not homogeneous in all the volume of the solid. The homogeneity depended on the mechanical treatment undergone by the mixture of the oxides.
Fil: Cangiano, Maria de Los Angeles. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; Argentina
Fil: Ojeda, Manuel Wilfrido. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; Argentina
Fil: Carreras, Alejo Cristian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; Argentina
Fil: Gonzalez, Jorge Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; Argentina
Fil: Ruiz Salado, Maria del Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; Argentina
Materia
Cu-Ni alloy
Nanostructure
Chemical synthesis
Mechanical mixture
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/279488
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/279488
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling A study of the composition and microstructure of nanodispersed Cu–Ni alloys obtained by different routes from copper and nickel oxidesCangiano, Maria de Los AngelesOjeda, Manuel WilfridoCarreras, Alejo CristianGonzalez, Jorge AlbertoRuiz Salado, Maria del CarmenCu-Ni alloyNanostructureChemical synthesisMechanical mixturehttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Mixtures of CuO and NiO were prepared by two different techniques, and then the oxides were reduced with H2. Method A involved the preparation of mechanical mixtures of CuO and NiO using different milling and pelletizing processes. Method B involved the chemical synthesis of the mixture of CuO and NiO. The route used to prepare the copper and nickel oxide mixture was found to have great influence on the characteristics of bimetallic Cu–Ni particles obtained. Observations performed using the X-ray diffraction (XRD) technique showed that although both methods led to the Cu–Ni solid solution, the diffractogram of the alloy obtained with method A revealed the presence of NiO together with the alloy. The temperature-programmed reduction (TPR) experiments indicated that the alloy is formed at lower temperatures when using method B. The scanning electron microscopy (SEM) studies revealed notable differences in the morphology and size distribution of the bimetallic particles synthesized by different routes. The results of the electron probe microanalysis (EPMA) studies evidenced the existence of a small amount of oxygen in both cases and demonstrated that the alloy synthesized using method B presented a homogeneous composition with a Cu–Ni ratio close to 1:1. On the contrary, the alloy obtained using method A was not homogeneous in all the volume of the solid. The homogeneity depended on the mechanical treatment undergone by the mixture of the oxides.Fil: Cangiano, Maria de Los Angeles. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; ArgentinaFil: Ojeda, Manuel Wilfrido. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; ArgentinaFil: Carreras, Alejo Cristian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; ArgentinaFil: Gonzalez, Jorge Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; ArgentinaFil: Ruiz Salado, Maria del Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; ArgentinaElsevier Science Inc.2010-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/279488Cangiano, Maria de Los Angeles; Ojeda, Manuel Wilfrido; Carreras, Alejo Cristian; Gonzalez, Jorge Alberto; Ruiz Salado, Maria del Carmen; A study of the composition and microstructure of nanodispersed Cu–Ni alloys obtained by different routes from copper and nickel oxides; Elsevier Science Inc.; Materials Characterization; 61; 11; 11-2010; 1135-11461044-5803CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S1044580310002275info:eu-repo/semantics/altIdentifier/doi/10.1016/j.matchar.2010.07.006info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-02-06T13:45:56Zoai:ri.conicet.gov.ar:11336/279488instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982026-02-06 13:45:56.741CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A study of the composition and microstructure of nanodispersed Cu–Ni alloys obtained by different routes from copper and nickel oxides
title A study of the composition and microstructure of nanodispersed Cu–Ni alloys obtained by different routes from copper and nickel oxides
spellingShingle A study of the composition and microstructure of nanodispersed Cu–Ni alloys obtained by different routes from copper and nickel oxides
Cangiano, Maria de Los Angeles
Cu-Ni alloy
Nanostructure
Chemical synthesis
Mechanical mixture
title_short A study of the composition and microstructure of nanodispersed Cu–Ni alloys obtained by different routes from copper and nickel oxides
title_full A study of the composition and microstructure of nanodispersed Cu–Ni alloys obtained by different routes from copper and nickel oxides
title_fullStr A study of the composition and microstructure of nanodispersed Cu–Ni alloys obtained by different routes from copper and nickel oxides
title_full_unstemmed A study of the composition and microstructure of nanodispersed Cu–Ni alloys obtained by different routes from copper and nickel oxides
title_sort A study of the composition and microstructure of nanodispersed Cu–Ni alloys obtained by different routes from copper and nickel oxides
dc.creator.none.fl_str_mv Cangiano, Maria de Los Angeles
Ojeda, Manuel Wilfrido
Carreras, Alejo Cristian
Gonzalez, Jorge Alberto
Ruiz Salado, Maria del Carmen
author Cangiano, Maria de Los Angeles
author_facet Cangiano, Maria de Los Angeles
Ojeda, Manuel Wilfrido
Carreras, Alejo Cristian
Gonzalez, Jorge Alberto
Ruiz Salado, Maria del Carmen
author_role author
author2 Ojeda, Manuel Wilfrido
Carreras, Alejo Cristian
Gonzalez, Jorge Alberto
Ruiz Salado, Maria del Carmen
author2_role author
author
author
author
dc.subject.none.fl_str_mv Cu-Ni alloy
Nanostructure
Chemical synthesis
Mechanical mixture
topic Cu-Ni alloy
Nanostructure
Chemical synthesis
Mechanical mixture
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Mixtures of CuO and NiO were prepared by two different techniques, and then the oxides were reduced with H2. Method A involved the preparation of mechanical mixtures of CuO and NiO using different milling and pelletizing processes. Method B involved the chemical synthesis of the mixture of CuO and NiO. The route used to prepare the copper and nickel oxide mixture was found to have great influence on the characteristics of bimetallic Cu–Ni particles obtained. Observations performed using the X-ray diffraction (XRD) technique showed that although both methods led to the Cu–Ni solid solution, the diffractogram of the alloy obtained with method A revealed the presence of NiO together with the alloy. The temperature-programmed reduction (TPR) experiments indicated that the alloy is formed at lower temperatures when using method B. The scanning electron microscopy (SEM) studies revealed notable differences in the morphology and size distribution of the bimetallic particles synthesized by different routes. The results of the electron probe microanalysis (EPMA) studies evidenced the existence of a small amount of oxygen in both cases and demonstrated that the alloy synthesized using method B presented a homogeneous composition with a Cu–Ni ratio close to 1:1. On the contrary, the alloy obtained using method A was not homogeneous in all the volume of the solid. The homogeneity depended on the mechanical treatment undergone by the mixture of the oxides.
Fil: Cangiano, Maria de Los Angeles. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; Argentina
Fil: Ojeda, Manuel Wilfrido. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; Argentina
Fil: Carreras, Alejo Cristian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; Argentina
Fil: Gonzalez, Jorge Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; Argentina
Fil: Ruiz Salado, Maria del Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; Argentina
description Mixtures of CuO and NiO were prepared by two different techniques, and then the oxides were reduced with H2. Method A involved the preparation of mechanical mixtures of CuO and NiO using different milling and pelletizing processes. Method B involved the chemical synthesis of the mixture of CuO and NiO. The route used to prepare the copper and nickel oxide mixture was found to have great influence on the characteristics of bimetallic Cu–Ni particles obtained. Observations performed using the X-ray diffraction (XRD) technique showed that although both methods led to the Cu–Ni solid solution, the diffractogram of the alloy obtained with method A revealed the presence of NiO together with the alloy. The temperature-programmed reduction (TPR) experiments indicated that the alloy is formed at lower temperatures when using method B. The scanning electron microscopy (SEM) studies revealed notable differences in the morphology and size distribution of the bimetallic particles synthesized by different routes. The results of the electron probe microanalysis (EPMA) studies evidenced the existence of a small amount of oxygen in both cases and demonstrated that the alloy synthesized using method B presented a homogeneous composition with a Cu–Ni ratio close to 1:1. On the contrary, the alloy obtained using method A was not homogeneous in all the volume of the solid. The homogeneity depended on the mechanical treatment undergone by the mixture of the oxides.
publishDate 2010
dc.date.none.fl_str_mv 2010-11
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/279488
Cangiano, Maria de Los Angeles; Ojeda, Manuel Wilfrido; Carreras, Alejo Cristian; Gonzalez, Jorge Alberto; Ruiz Salado, Maria del Carmen; A study of the composition and microstructure of nanodispersed Cu–Ni alloys obtained by different routes from copper and nickel oxides; Elsevier Science Inc.; Materials Characterization; 61; 11; 11-2010; 1135-1146
1044-5803
CONICET Digital
CONICET
url http://hdl.handle.net/11336/279488
identifier_str_mv Cangiano, Maria de Los Angeles; Ojeda, Manuel Wilfrido; Carreras, Alejo Cristian; Gonzalez, Jorge Alberto; Ruiz Salado, Maria del Carmen; A study of the composition and microstructure of nanodispersed Cu–Ni alloys obtained by different routes from copper and nickel oxides; Elsevier Science Inc.; Materials Characterization; 61; 11; 11-2010; 1135-1146
1044-5803
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S1044580310002275
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.matchar.2010.07.006
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science Inc.
publisher.none.fl_str_mv Elsevier Science Inc.
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.604905

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