Paper Title:
Synthesis of W- Cu- Ag Nanopowders Produced by a Co-Precipitation Process
  Abstract

A homogeneous precipitation process was employed to prepare nanosized W-10%wtCu-10%wtAg powders using ammonium meta tungstate, copper nitrate and silver nitrate as precursors. The initial precipitates were obtained by reacting ammonium meta tungstate, copper nitrate and silver nitrate solutions under certain PH and temperature. In order to synthesis W-Cu-Ag composite powders, the initial precipitates washed, dried, and then calcined in air in order to prepare CuWO4-x, Ag2W4O13 and WO3 oxide powders for the next step reduction. The reduction was carried out in a hydrogen atmosphere to form the final W-Cu-Ag nanocomposite powders. The powders were characterized by X-ray diffraction (XRD) technique. The morphologies of the powders were observed by scanning electron microscopy (SEM).

  Info
Periodical
Defect and Diffusion Forum (Volumes 312-315)
Edited by
Andreas Öchsner, Graeme E. Murch and João M.P.Q. Delgado
Pages
312-318
DOI
10.4028/www.scientific.net/DDF.312-315.312
Citation
G. Taghavi, H. R. Rezaie, H. Razavizadeh, "Synthesis of W- Cu- Ag Nanopowders Produced by a Co-Precipitation Process", Defect and Diffusion Forum, Vols. 312-315, pp. 312-318, 2011
Online since
April 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Sung Tag Oh, Se Joong Yoon
Abstract:The reduction behavior of Al2O3/CuO powder mixtures, prepared from Al2O3/CuO or Al2O3/Cu-nitrate, was investigated by using thermogravimetry...
181
Authors: Jie Qiang Wang, Qing Hua Yu, Shao Hua Zheng, Zhi Wang
Abstract:Using NH4HCO3 solution as precipitant, the ultrafine 3Y-ZrO2/Al2O3 precursors were prepared by the liquid-phase precipitation method. The...
1137
Authors: Li Li Wang, Jin Chen, Guang Cheng Yang, Fu De Nie
Micro/Nano Materials
Abstract:A carbonate precursor with high sintering activity was prepared by co-precipitation method under ultrasonic radiation. This precursor...
839
Authors: Shuai Sun, Qiang Xu
Chapter 2: Engineering Ceramics and Ceramic Composites
Abstract:A Coprecipitation Method Was Applied to Synthesize Al2O3/GdAlO3 Compound Powder, Using Ammonia as the...
535
Authors: Gunawan, I. Sopyan, A. Naqshbandi, S. Ramesh
Chapter 2: Nanotechnology and Micro/Nano Electro Mechanical Systems
Abstract:Biphasic calcium phosphate powders doped with zinc (Zn-doped BCP) were synthesized via sol-gel technique. Different concentrations of Zn have...
614