Carbide tipped cutting tools are manufactured by powder metallurgy
techniques and have a composition of
(A) 90% tungsten carbide and 10% cobalt
(B) 70% aluminium oxide & 30% silica
(C) 30% nickel, 15% chromium & 55% tungsten
(D) 65% tungsten & 35% zirconium
techniques and have a composition of
(A) 90% tungsten carbide and 10% cobalt
(B) 70% aluminium oxide & 30% silica
(C) 30% nickel, 15% chromium & 55% tungsten
(D) 65% tungsten & 35% zirconium