Spark plasma sintering of WC–Co tool materials prepared with emphasis on WC core–Co shell structure development

摘要: Abstract Quasi-nano-sized WC core–Co shell structure composites were successfully fabricated by the wet chemical reduction method introducing uniformly dispersed powders of 300-nm size into Co(OH) 2 , which was subsequently reduced to Co drop-wise titration H 3 PO . X-ray diffractometer (XRD), scanning electron microscopy (SEM) and transmission (TEM) identified phases ball-milled, compacted finally densified at 1400–1450 °C spark plasma sintering. WC–Co sintered thus prepared analyzed examine densification, hardness fracture behavior: reasonably adequate post-sintering properties are attributable improved afforded optimized mechanical alloying SPS sintering processes.