In 1954 General Electric for the first time succeeded in transforming the graphite into diamond by dissolution and crystallization of the molten metal alloy.
Since 1961 the industrial synthesis of diamonds began. Today it is a high-tech industry with the ability to produce diamonds of various proper-ties for different industries and applications.
DIAMOND HAS A NUMBER OF UNIQUE PROPERTIES:
Friction coefficient. The lowest, of all known materials, friction-slip coefficient.
Hardness. The hardest material in nature. Significantly harder the other tool materials
Thermal conductivity. Highest thermal conductivity of all known materials
listed mechanical and thermal properties defined the area of diamond application as a unique material for material processing by cutting. Not one known material in nature, compared to the diamond, is able to so effectively intrude into the processed material, slide on the surface and not produce excess heat.
Natural diamond — created from carbon in the Earth’s crust from high temperature and pressure in molten magma.
Synthetic diamond — synthesized from graphite under high temperatures and pressure
Due to better control of properties and lower price, synthetic diamonds are almost always used in production of diamond tools for cutting, drilling and grinding.