Invention Grant
US07368013B2 Superabrasive particle synthesis with controlled placement of crystalline seeds 失效
超级磨料颗粒合成,控制放置晶种

  • Patent Title: Superabrasive particle synthesis with controlled placement of crystalline seeds
  • Patent Title (中): 超级磨料颗粒合成,控制放置晶种
  • Application No.: US11175017
    Application Date: 2005-07-05
  • Publication No.: US07368013B2
    Publication Date: 2008-05-06
  • Inventor: Chien-Min Sung
  • Applicant: Chien-Min Sung
  • Agency: Thorpe North & Western LLP
  • Main IPC: C30B29/04
  • IPC: C30B29/04
Superabrasive particle synthesis with controlled placement of crystalline seeds
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 can include forming a growth precursor of a substantially homogeneous mixture of raw material and catalyst material or layers of raw material and metal catalyst. The growth precursor can have a layer of adhesive over at least a portion thereof. A plurality of crystalline seeds can be placed in a predetermined pattern on the layer of adhesive. The growth precursor can be 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.
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