Patent · US Active

Method for manufacturing cubic diamond nanocrystals

US8932553B2 · kind B2 · utility

1Cited by

3References

9Claims

0Family size

Assignees

Institut National de la Sante et de la Recherche Medicale (INSERM) · FR
ARMINES · FR
UNIVERSITAT STUTTGART · DE
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE · FR

Inventors

Patrick Curmi · Évry, FR
Jean-Paul Boudou · Chaville, FR
Alain Thorel · Dole, FR
Fedor Jelezko · Stuttgart, DE
Mohamed Sennour · Dole, FR

Key dates

Filing date	Mar 8, 2010
Grant date	Jan 13, 2015
Priority date	—
Expiry date	Jan 19, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T436/143333
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for manufacturing cubic diamond nanocrystals (10) comprising the following successive steps: (a) providing crystalline diamond powder where the maximum particle size of the powder is equal or more than 2 um and equal or less than 1 mm; (b) milling said crystalline micron diamond powder using nitrogen jet milling micronization so as to manufacture a fine powder; (c) nanomilling the fine powder of step b) using a planetary tungsten carbide ball mill; (d) acid treating the nanomilled powder of step c); (e) extracting the cubic diamond nanocrystals (10) by centrifugation. Advantageously round-shaped cubic diamond nanocrystals are manufactured.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.