The influence of sintering temperature and pressure on microstructure and mechanical properties of carbonyl iron powder materials fabricated by electric current activated sintering

Sintering of nanocrystalline materials: Sintering parameters

“…Consequently, the density and grain size increase with increased sintering temperature as reduced porosity is attained. Ye et al [ 74 ], in their investigation, also reported that the density, hardness, and strength of carbonyl iron powder were enhanced as the sintering temperature and pressure increased. The impact of sintering temperature on the densification behaviour of nano-sized and micro-sized Y-TZP powders was studied and compared by Palmeira et al [ 75 ].…”

“…Qiu et al [ 85 ] reported that increased pressure could aid improved densification of mechanically alloyed powders. However, Yongquan et al [ 74 ] reported a minimal effect on the structural evolution of carbonyl-iron powders as regards pressure.…”

Influence of sintering pressure on microstructure and tribological properties of Copper–Tin composites containing graphite and MoS2

“…The shear strength is not significantly affected by further increases in the sintering pressure. Ye et al [23] prepared carbonyl iron powder materials by current activated sintering at 20-50 MPa and found that the average density, average hardness and bending strength of the materials rose with the rise in pressure. Luo et al [24] fabricated silver/reduced graphene oxide hybrid-reinforced copper matrix composites at various sintering pressures (30-60 MPa), and the Vickers microhardness of the composites increased from 81.3 HV to 89.1 HV with increasing sintering pressure, which is 27.3% higher than that of pure copper.…”