The carrier is a metal matrix composite, formed by sintering, hot pressing or by an infiltration process, and comprising tungsten metal particles in a metal binder phase, or a mixture of tungsten metal particles and {HEAD ~ tungsten carbide particles} in {TAIL ~ a metal binder phase} 
The carrier is a metal matrix composite , formed by sintering , hot pressing or by an infiltration process , and comprising tungsten metal particles in a metal binder phase , or a mixture of tungsten metal particles and { HEAD ~ tungsten carbide particles } in { TAIL ~ a metal binder phase }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL