Patent ID: 9540245
Date: 2017-01-10
CPC Classifications: C01B,C01P

Claim:
1. A method for synthesizing nanodiamonds, consisting of: disposing graphite powder in a ball milling container, the ball milling container including a plurality of milling balls and having an inert atmosphere therein; disposing the ball milling container including the graphite powder in a ball mill; operating the ball mill for a first period of time to achieve high-energy collision of the plurality of balls with the graphite powder in the container, the high energy collision occurring in the first period of time producing a first product powder including nanodiamonds, wherein the high energy collision occurs at ambient pressure and room temperature; disposing the first product powder in a high-pressure ball milling container; pressurizing the high-pressure ball milling container with H and operating the ball mill for a second period of time to achieve high-energy collision of the plurality of balls with the first product powder in the container, the high energy collision occurring in the second period of time producing a second product powder.