Paper Title:
Properties of Cu-W Functionally Graded Materials Produced by Segregation and Infiltration
  Abstract

The Cu/W functionally graded material (FGM) was produced by vibration of W agglomerates in order to obtain the W skeleton with a gradient in porosity, which after pressureless sintering was infiltrated with molten Cu. Certain sintering mechanisms are suggested for these complex W structures. The segregation of two different sizes of W agglomerates was controlled by vibration time. Different vibration duration resulted in different types of microstructure: skeleton type microstructure after shorter vibration time and graded type microstructure after extended vibration times. The final Cu-infiltrated FGMs were characterized microstructurally and their electrical resistivity (r) was measured using the 4-probe technique. The values of r were in between those for pure W and Cu, depending strongly on the vibration times of the initial W agglomerates, and exhibiting particular r vs. T (K) behavior.

  Info
Periodical
Materials Science Forum (Volumes 492-493)
Edited by
Omer Van der Biest, Michael Gasik, Jozef Vleugels
Pages
123-128
DOI
10.4028/www.scientific.net/MSF.492-493.123
Citation
D. Janković Ilić, J. Fiscina, C.J.R. González-Oliver, F. Mücklich, "Properties of Cu-W Functionally Graded Materials Produced by Segregation and Infiltration ", Materials Science Forum, Vols. 492-493, pp. 123-128, 2005
Online since
August 2005
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: H.Y. Nam, S.K. Kwon, Young Soo Kang, Jai Sung Lee
Abstract:Sintering process of powder injection molded (PIMed) Fe-50wt%Ni nanoalloyed powder was investigated in association with microstructure...
1141
Authors: Yun Sung Kang, B.H. Cha, H.G. Kang, Jai Sung Lee
Abstract:Densification behavior of nano-agglomerate powder during pressureless sintering of Fe-Ni nanopowder was investigated in terms of diffusion...
505
Authors: Jai Sung Lee, B.H. Cha, H.G. Kang, Yun Sung Kang
Abstract:This paper overviews our recent investigations on the processing of net-shaped Fe-based nanoparticulate materials and their related material...
5001
Authors: Jai Sung Lee, W. K. You, B. H. Cha
Abstract:The key concept of nanopowder agglomerate sintering (NAS) process is based on the optimization of structure design and full density...
93
Authors: Sergey Guk, Diana Milisova, Katja Pranke
Chapter 1: Metal Physics and Mechanics of Deformation Processes
Abstract:The present technical work reports on the formability and related behaviour of components during hot rolling of metal matrix composites (MMC)...
86