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Thick cubic boron nitride (CBN) layer and manufacturing process therefor

  • US 9,821,435 B2
  • Filed: 05/29/2012
  • Issued: 11/21/2017
  • Est. Priority Date: 05/27/2011
  • Status: Active Grant
First Claim
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1. A method for fabricating a hard composite, comprising:

  • a. depositing into a notch of a form a composite material comprising (i) a plurality of cubic boron nitride (cBN) particles, and (ii) a plurality of particles selected from the group consisting of nitrides, carbides, carbonitrides, borides, oxides, carbon, and metallic phases;

    b. applying a mechanical press to the composite material in the notch of the form whereby the composite material is leveled and compressed; and

    c. applying a consolidation process to the composite material in the notch of the form, wherein the consolidation process is selected from the group consisting of chemical vapor infiltration (CVI), microwave sintering, and pulsed infrared (IR) heating;

    wherein a thickness of the composite material is controlled by depositing the composite material to a target height in the notch less than or equal to a total depth of the notch, further wherein the thickness of the composite material is between 30 μ

    m and 1000 μ

    m.

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