Title:
結晶種の制御された配置を伴う超研磨粒子の合成
Document Type and Number:
Japanese Patent JP2007531681
Kind Code:
A
Abstract:
An improved method for synthesizing superabrasive particles provides high quality industrial superabrasive particles with high yield and a narrow size distribution. The synthesis method includes forming a substantially homogeneous mixture of raw material and catalyst material or layers of raw material and metal catalyst. A plurality of crystalline seeds is placed in a predetermined pattern in the mixture or one of the layers to form a growth precursor. The growth precursor is maintained at a temperature and pressure at which the superabrasive crystal is thermodynamically stable for a time sufficient for a desired degree of growth. Advantageously, the patterned placement of crystalline seeds and disclosed processes allow for production of various morphologies of synthetic diamonds, including octahedral and cubic diamonds, and improved growth conditions generally. As a result, the grown superabrasive particles typically have a high yield of high quality particles and a narrow distribution of particle sizes.
Inventors:
Song, Chiang-Min
Application Number:
JP2007501942A
Publication Date:
November 08, 2007
Filing Date:
March 01, 2005
Export Citation:
Assignee:
Song, Chiang-Min
International Classes:
C01B31/06; B01J3/06; B23D61/18; B23D65/00; B23P15/28; B24D3/00; B24D3/08; B24D7/06; B24D18/00; B24D99/00; C04B35/52; C09K3/14; C22C1/05; C22C26/00; E21B10/56; E21B10/567
Foreign References:
| US4547257A | 1985-10-15 |
Attorney, Agent or Firm:
Hidesaku Yamamoto
Takaaki Yasumura
Natsuki Morishita
Takaaki Yasumura
Natsuki Morishita