| 摘要 |
Disclosed is an improved method for applying a coating of elemental silver on the exterior surfaces of diamond particles wherein an ammoniacal silver solution is mixed with the reducing solution and the diamond particles contacted with said mixture. The improvement of the present invention comprises agitating the ammoniacal silver solution containing said diamond particles sufficiently to suspend the particles therein and adding the reducing solution to the agitated ammoniacal solution at a metered rate adequate to produce a continuous grainy elemental silver coating on the diamond particles. A typical reducing solution is aqueous invert sugar. |
