Title of article :
THE FEASIBILITY STUDY OF W-CU COMPOSITE PRODUCIION BY SUBMICRON PARTICLESADDffiON and INFILTRATION
Author/Authors :
Borgi, S Department of Materials Engineering - Malek-e-Ashtar University of Technology, Tehran , Zangeneh-madar, K Department of Materials Engineering - Malek-e-Ashtar University of Technology, Tehran , Ahangarkani, M Department of Materials Engineering - Malek-e-Ashtar University of Technology, Tehran , Valefi, Z Department of Materials Engineering - Malek-e-Ashtar University of Technology, Tehran
Abstract :
In thispaper thefeasibility offabricating controlled porous skeleton ofpure tungsten at low temperature by addition of submicron particles to tungsten powder (suiface activated sintering) has been studied and the best parameters for subsequent infiltration ofCu were acquired The effects of addition of submicron particles and sintering temperature on porous as well as infiltrated samples were studied. The samples were examined by scanning electron microscopy (SEM), Pickers hardness measurements and tensile test. The composites made have been investigated and revealed the ma/dng W-Cu composite with good density. penetrability, hardness and microstructure. Consequently, the sintering tetnpetature was reduced considerably I 650oC) and a homogeneous porous tungsten was obtained. Also, composite prepared by this method exhibited elongation about 28% that is much more than conventional W- 15%wt Cu composites. This method of production for W-Cu composites has not been reported elsewhere.
Keywords :
W-Cu composite , Sintering. Infiltration , Submicron Particles , Microsttucture
Journal title :
Astroparticle Physics
