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United States Patent 5,449,491
JobSept. 12, 1995

Method of producing diamond crystals from metallfullerite matrix and resulting product

Inventors: Job; Robert C. (Charlotte, NC).
Assignee: MicroMet Technology, Inc. (Monroe, NC).
Appl. No.: 386,195
Filed: Feb. 9, 1995

Related U.S. Application Data
Continuation of (including streamline cont.) Ser. No.921,904, Jul. 29, 1992, abandoned, which is a continuation-in-part of Ser. No. 820,842, Jan. 15, 1992, abandoned.
Intl. Cl.:C22C 38/00; C22C 26/00; C21D 1/18
U.S. Cl.:420/590; 148/540; 148/579; 423/446
Field of Search:148/538, 540-543, 320, 421, 423, 425, 426, 579; 420/590; 423/446

References Cited

Foreign Patent Documents
92/04279Mar., 1992EP

Other References

Primary Examiner: Yee; Deborah
Attorney, Agent or Firm: Banner & Allegretti, Ltd.


A method of producing diamond crystals from a metallofullerite matrix independent of external application of pressure is disclosed. The method comprises hyperquenching a portion of a metallic sold comprising a metal carbon matrix of an allotropic metal and metallofullerites of that allotropic metal after the portion has been heated to or near the critical temperature for its percentage composition of the allotropic metal, carbon, and other effective ingredients. The quenching is conducted rapidly enough to collapse fullerene structures present in the matrix into diamond crystals. The resulting metal-carbon matrix of an allotropic metal, metallofullerites of the allotropic metal, and diamond crystals are also disclosed.

29 Claims, No Drawings

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