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Processes for the preparation of polycrystalline diamond films

  • US 4,925,701 A
  • Filed: 05/27/1988
  • Issued: 05/15/1990
  • Est. Priority Date: 05/27/1988
  • Status: Expired due to Term
First Claim
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1. A process for the preparation of continuous polycrystalline 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 0.4 micron;

  • heating the resulting powdered substrate subsequent to incorporation in a processing apparatus;

    introducing a mixture of gases into the apparatus, which gases provide a supply of carbon and hydrogen; and

    decomposing the gas mixture.

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