Ultrasharp diamond edges and points and method of making

Details Ultrasharp diamond edges and points and method of making Ultrasharp diamond edges and points and method of making

1975-08-27

1978-04-18

Arnold, Donald J.

Abrasive tool making process, material, or composition

With inorganic material

51309R, 83651, 264102, 264125, 264319, B24D 304, B24D 308

Patent

active

040849422

ABSTRACT:
Ultrasharp diamond edges and points which are usable as cutting instruments and as high intensity point sources for the emission of electrons, ions, x-rays, coherent and incoherent light and high frequency electromagnetic radiation are produced by preparing and classifying ultrafine diamond powder having a particle size of 10 to 100 angstroms placing the powder in a diamond mold defining the ultrasharp edge or point to be produced and applying a pressure of the order of 80 to 90 kb while heating the powder to a temperature of the order of 2440.degree. to 2500.degree. K in an ultrahigh vacuum or inert atmosphere after degasing to avoid oxidation of the diamond powder.

REFERENCES:
patent: 3060781 (1962-10-01), Villalobos
patent: 3574580 (1971-04-01), Stromberg et al.
patent: 3646841 (1972-03-01), Villalobos
patent: 3663475 (1972-05-01), Figiel
patent: 3829544 (1974-08-01), Hall
patent: 3879901 (1975-04-01), Caveney
patent: 3913280 (1975-10-01), Hall

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