Tough diamonds and method of making thereof

Details Tough diamonds and method of making thereof Tough diamonds and method of making thereof

2007-01-02

2007-01-02

Hendrickson, Stuart L. (Department: 1754)

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

C117S103000

Reexamination Certificate

active

10889169

ABSTRACT:
A single crystal diamond grown by microwave plasma chemical vapor deposition has a hardness of 50–90 GPa and a fracture toughness of 11–20 MPa m1/2. A method for growing a single crystal diamond includes placing a seed diamond in a holder; and growing single crystal diamond at a temperature of about 1000° C. to about 1100° C. such that the single crystal diamond has a fracture toughness of 11–20 MPa m1/2.

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