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国外刊物论文译文选登(1)

 发布时间:2011/10/13 阅读:49531

1.Introduction

Since the beginning of CVD diamond synthesis, faceted diamond layers, but frequently also half-spherical and poly crystalline diamond (ballas) were deposited. Ballas deposition is observed under “non-optimal” growing conditions. The CVD ballas layers were alsocalled cauliflower like, ball-shaped, etc. by some authors. Additionally during the last years nano-crystalline and ultra-nanocrystalline diamond films were described.

 

1.前言

自从CVD金刚石合成开始以来,不但沉积了多面金刚石涂层,而且还常常沉积半球形状的聚晶金刚石(半刚石)。在“非最佳”的生长条件下可沉积半刚石。 CVD半刚石涂层还被一些作者称作菜花形金刚石、球形金刚石等等。另外,近几年来对纳米晶和超纳米晶金刚石薄膜进行了描述。

Faceted diamond can be grown by various technigues and diamond growth can be obtained within a wide range of parameters (e.g. temperature range between 300 and 1000℃). All methods are primarily based on the generation of large amounts of atomic hydrogen and carbon radicals.

 

多面金刚石可通过各种方法形成,而且金刚石可在一个很宽的参数范围内生长(如温度范围为300~1000℃)。所有的方法首先要以大量原子态氢和碳基的产生为基础。

With increase of carbon supersaturation(e.g. CH4 amount in the gas phase)faceted diamonds get less and a high amount of twins and stacking faults are introduced into the deposited diamond. Finally radial growth of polycrystalline, unfaceted diamond having the “ballastype morphology” occurs.

 

随着碳的超饱和度(如气相中的甲烷含量)的增大,多面金刚石减少,大量的孪晶和堆垛层错进入沉积的金刚石中。最后,具有“半刚石型形貌”的非多面聚晶金刚石成径向生长。

Raman spectroscopy is the most freguently used technigue to characterize carbon bonding in diamond films, to distinguish between diamond, graphite and amorphous carbon is possible

 

拉曼光谱法是描述金刚石薄膜碳键合特征的最常用的方法。使鉴别金刚石、石墨和非晶碳成为可能。

 

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