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 {HEAD ~ a mixture} of tungsten metal particles and tungsten carbide particles in {TAIL ~ a metal binder phase} 
in
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 { HEAD ~ a mixture } of tungsten metal particles and 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 HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL