A.Tungsten carbide is 4x harder than titaniumand 2 times heavier than platinum,tungsten is virtually scratch resistant, tungsten has the highest melting point of all metals and most resistant to scratches. From what I know , in the scale of hardness it scores a 8-9 while diamond is ranked ...
C, Eds.; Academic: New York which is respectively incorporated herein by reference for its teachings regarding molybdenum or tungsten catalysts for ROMP polymerizations). Attempts to homo-polymerize the norbornene/Pt complexes of formula (Ic) with Grubbs 3d generation ROMP initiator resulted in ...
Here we report that Ni5.2WCu2.2nanotubes (NTs)—a ternary nickel–tungsten–copper alloy—can catalyze the HOR in alkaline electrolyte highly efficient and stable. We find that the Ni5.2WCu2.2catalyst achieves higher HOR activity than a commercial Pt/C counterpart. Importantly, stability window up ...