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Method to grow carbon thin films consisting entirely of diamond grains 3-5 nm in size and high-energy grain boundaries
Method to grow carbon thin films consisting entirely of diamond grains 3-5 nm in size and high-energy grain boundaries
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机译:生长完全由尺寸为3-5 nm的金刚石晶粒和高能晶界组成的碳薄膜的方法
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摘要
An ultrananocrystalline diamond (UNCD) having an average grain size between 3 and 5 nanometers (nm) with not more than about 8% by volume diamond having an average grain size larger than 10 nm. A method of manufacturing UNCD film is also disclosed in which a vapor of acetylene and hydrogen in an inert gas other than He wherein the volume ratio of acetylene to hydrogen is greater than 0.35 and less than 0.85, with the balance being an inert gas, is subjected to a suitable amount of energy to fragment at least some of the acetylene to form a UNCD film having an average grain size of 3 to 5 nm with not more than about 8% by volume diamond having an average grain size larger than 10 nm.
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