More and more often, cemented carbides are employed for the production of wear resistant components have to face highly demanding service conditions that combine different damage mechanisms. A key example is range tetraphasic (sea water, sand, liquid gaseous hydrocarbons) flows encountered in Oil Gas extraction industry. Notwithstanding importance operating regimes this type, availability funda...

Abstract Tungsten borides (WB x ; = 2.5 or 4.5) with an increasing substitution of tungsten by zirconium from 0 to 24 at.% were synthesized spark plasma sintering (SPS) for the first time. The influence holding time (2.5–30 min) on densification behavior, microstructure evolution and development properties W–Zr–B compounds studied. samples characterized using scanning electron microscopy (SEM) ...

Drill bits equipped with WC-Co cemented carbide buttons offer great performance in many rock drilling applications. Generally, the wear of these against is gradual and moderate, or even slow depending on conditions. However, Co binder has recently been found to cause health issues an alternative binder, which does not compromise carbide, needed. In present work, WC-Fe WC-Ni investigated compare...