A new chemical route to synthesize Cu-Ni alloy nanostructured particles

被引：0
|
作者：
de los A. Cangiano, M. [1 ]
Carreras, A.C. [1 ]
Ojeda, M.W. [1 ]
del C. Ruiz, M. [1 ]
机构：
[1] Instituto de Investigaciones en Tecnología Química (INTEQUI)-CONICET, Universidad Nacional de San Luis, Chacabuco y Pedernera, CC 290, 5700 San Luis, Argentina
来源：
Journal of Alloys and Compounds | 2008年 / 458卷 / 1-2期
关键词：
Cu-Ni alloys are extensively used in several metallurgic industries. The traditional methods for the synthesis of these alloys have some limitations; mainly related with manufacturing costs and product homogeneity; which makes evident the need to study and develop new methodologies to produce them. In this work; a new route for the synthesis of Cu-Ni alloys is presented. The process involves four steps; including the precursor preparation by the citrate-gel method and the subsequent decomposition; calcination and reduction. The products obtained in the different steps were characterized using thermal gravimetry (TG); X-ray diffraction (XRD); infrared spectroscopy (IR); scanning electron microscopy (SEM); electron probe microanalysis (EPMA) and other techniques. The Cu-Ni alloy; of homogeneous composition; with a Cu/Ni atomic ratio of 0.92 and with a grain structure at nanometric scale was obtained using the proposed methodology. The studies carried out using SEM and XRD showed the alloy formation with a regular morphology and with an average grain size of about 15.5 nm. The thermal programmed reduction (TPR) profiles showed a unique reduction temperature for the synthesized solid; which is significantly lower than the pure oxides reduction temperature. © 2007 Elsevier B.V. All rights reserved;
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Journal article (JA)
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页码：405 / 409
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