Cobalt diamond synthesis

There are a number of binders used for pcD sintering. The most commonly used ones are iron group materials which are known to be good solvent/catalysts for diamond synthesis, namely cobalt, iron, nickel, and manganese or various combinations of these. 

B the synthesis of diamond from phenolic resin and cobalt [30]... 

Virtually all commercial HPHT synthesis of diamond uses iron, nickel, cobalt, manganese, chromium, and their alloys as catalyst-solvents. However, many other metals ean catalyze graphite-to-diamond formation at higher temperatures and pressures, as can water, silicates, and other minerals that are more akin to the environment in which natural diamonds grow in the earth. 

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