
基本信息:
- 专利标题: High pressure superabrasive particle synthesis
- 专利标题(中):高压超磨料颗粒合成
- 申请号:US11818894 申请日:2007-06-14
- 公开(公告)号:US20070295267A1 公开(公告)日:2007-12-27
- 发明人: Chien-Min Sung
- 申请人: Chien-Min Sung
- 主分类号: C30B19/02
- IPC分类号: C30B19/02
摘要:
An improved method for controlling nucleation sites during superabrasive particle synthesis can provide high quality industrial superabrasive particles with high yield and a narrow size distribution. The synthesis method can include forming a raw material layer, forming a particulate catalyst layer adjacent the raw material layer, and placing crystalline seeds in a predetermined pattern at least partially in the catalyst layer or raw material layer to form a growth precursor. Alternatively, the raw material and catalyst material can be mixed to form a particulate crystal growth layer and then placing the crystalline seeds in a predetermined pattern in the growth layer. Preferably, seeds can be substantially surrounded by catalyst material. 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. The crystalline seeds can be placed in a predetermined pattern using a template, a transfer sheet, vacuum chuck or similar techniques. The superabrasive particles grown using the described methods typically have a high yield of high quality industrial particles and a narrow distribution of particle sizes.
摘要(中):
在超磨料颗粒合成中控制成核位置的改进方法可以提供高产率和窄尺寸分布的高质量工业超研磨颗粒。 合成方法可以包括形成原料层,在原料层附近形成颗粒催化剂层,并将至少部分地将结晶晶种至少部分地放置在催化剂层或原料层中以形成生长前体。 或者,可以将原料和催化剂材料混合以形成颗粒状晶体生长层,然后将结晶种子以预定图案放置在生长层中。 优选地,种子可以被催化剂材料基本包围。 生长前体可以保持在超磨料晶体在热力学稳定的温度和压力下达足以达到所需生长程度的时间。 结晶种子可以使用模板,转印片,真空吸盘或类似技术以预定图案放置。 使用所述方法生长的超级磨料颗粒通常具有高产率的高质量工业颗粒和窄粒度分布。