نوع مقاله : مقاله پژوهشی
عنوان مقاله English
نویسندگان English
Tungsten carbide reinforced steel composites (0, 0.5, 1, and 1.5 wt.%) were fabricated through powder metallurgy route. With an increase in tungsten carbide particles up to 1.5 wt.%, the density increases and the porosity decreases. However, the measured density range was between 7.15 and 7.34 g/cm³, and the porosity range was between 14.01% and 16.34%. Addition of 1 wt.% iron phosphide led to the formation of a phosphorus-rich phase at the boundaries of agglomerated iron particles and improved the uniformity of tungsten carbide particle distribution. This resulted in a 28.7% reduction in porosity (from 11.5% to 8.2%) and a 2.7% increase in density (from 7.15 to 7.34 g/cm³). Furthermore, the steel composite sample containing 1 wt.% tungsten carbide achieved the maximum hardness value (32.6 HRB), representing a 68% increase compared to the unreinforced steel sample. Pin-on-disk test results demonstrated that the addition of 1 wt.% tungsten carbide as the optimal reinforcement content led to a 44.6% and 42.2% improvement in wear resistance at distances of 100 and 1000 meters, respectively.
کلیدواژهها English
