FLAME STRUCTURE AND DIAMOND GROWTH-MECHANISM OF ACETYLENE TORCH
FLAME STRUCTURE AND DIAMOND GROWTH-MECHANISM OF ACETYLENE TORCH
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DOI：
10.1143/jjap.28.1718
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发表时间：
1989-09-01
期刊：
影响因子：
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通讯作者：
HIROSE, Y
中科院分区：
文献类型：
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作者：
MATSUI, Y;YUUKI, A;HIROSE, Y
为了了解金刚石在c2h2 / o2火焰中的生长机理，我们利用激光诱导荧光和质谱技术对不同混合比（R= c2h2 / o2）的气体进行了分析。这些测量表明，CO和h2是羽毛中的主要气体，c2h2和含C的自由基（如c2h， CR, Cn, n= 1-3）是次要气体。它们的浓度与绝热计算估计的平衡值一致。羽毛是由这些c自由基和O自由基（如O和OH）之间的相互扩散和反应形成的，它们是在中间区通过二次火焰提供的o2氧化产生的。金刚石生长速率的r依赖性与羽毛中CH和co2浓度的r依赖性很好地一致。
To understand the diamond growth mechanism in C 2 H 2/O 2 flame, we carried out gas analyses for various mixture ratios (R= C 2 H 2/O 2) with laser-induced fluorescence and mass spectrometric techniques. These measurements show that CO and H 2 are the dominant gases in the feather, and that C 2 H 2 and C-containing radicals (eg, C 2 H, CR, Cn, n= 1-3) are minor species. Their concentrations are found to be consistent with the equilibrium values estimated by the adiabatic calculation. The feather is formed by the inter-diffusion and reactions between these C-radicals and O-radicals (eg, O and OH), which are produced in the intermediate zone by the oxidation with O 2 supplied through the secondary flame. It is also found that R-dependences of the diamond growth rate is in good agreement with those of CH and C 2 concentrations in the feather.