Diamond-silicon carbide composite and method

Details Diamond-silicon carbide composite and method Diamond-silicon carbide composite and method

2011-06-14

2011-06-14

Del Sole, Joseph S (Department: 1743)

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Reshaping running or indefinite-length work

C501S090000

Reexamination Certificate

active

07959841

ABSTRACT:
Uniformly dense, diamond-silicon carbide composites having high hardness, high fracture toughness, and high thermal stability are prepared by consolidating a powder mixture of diamond and amorphous silicon. A composite made at 5 GPa/1673K had a measured fracture toughness of 12 MPa·m1/2. By contrast, liquid infiltration of silicon into diamond powder at 5 GPa/1673K produces a composite with higher hardness but lower fracture toughness.

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