| 摘要 |
PURPOSE: A method is provided for forming a diamond surface and a device is provided which having a diamond surface thereon. CONSTITUTION: A diamond grit surface is formed on a substrate(1) having a metal surface(2), such as of nickel, by applying a paste of low-grade diamond grit in a binder to the surface. After driving off the binder, the diamond coated surface is placed in a reactor chamber(10) having a microwave plasma reactor(11) and connected to a hydrogen gas pump(12). The substrate(1) is heated in the hydrogen atmosphere at a reduced pressure. The metal surface(2) acts as a catalyst in the presence of the hydrogen plasma to cause regrowth of the diamond(6), giving an improved size, shape and adhesion. The method may be used to make diamond surfaces in electron emitter devices, circuit boards or abrasive devices.
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