Process for the preparation of polycrystalline diamond.

摘要

A process for the preparation of continuous polycrystalline diamond, especially diamond films, which comprises applying to a substrate diamond powder in an amount of from about one particle per ten square microns to about 10 particles per square micron with an average particle diameter of from about 0.1 to about 1.0 micron (more especially from about 0.1 to about 0.4 micron); heating the resulting powdered substrate subsequent to incorporation in a processing apparatus; introducing a mixture of gases into the chamber, which gases provide a supply of carbon and hydrogen; and decomposing the gas mixture.