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