The Influence of Solvent Metal Microstructure on Synthetic Quality of Diamond Single Crystals
The Influence of Solvent Metal Microstructure on Synthetic Quality of Diamond Single Crystals
复制标题
DOI：
10.4028/www.scientific.net/amr.306-307.1753
复制
发表时间：
2011-08
期刊：
影响因子：
--
通讯作者：
X. Fan;Bin Xu;Cai-ru Gao
中科院分区：
文献类型：
--
作者：
X. Fan;Bin Xu;Cai-ru Gao
以阿尔蒂石墨为碳源，铁基合金为催化剂，在六面顶砧装置上高温高压合成了金刚石单晶。在合成过程中采用了四种不同的催化剂在不同的合成时间。合成后，通过扫描电子显微镜（SEM）对溶剂金属样品的微观结构进行表征。结果表明，当合成质量相对上级时，初生板条渗碳体分布均匀，呈条状平行生长。此外，边缘的陨石是更均匀。因此，合成时间和催化剂组成共同影响着溶剂金属的微观结构，尤其影响着晶相的数量和形状。
Diamond single crystals are synthesized using artificial graphite as carbon source and iron-based alloy as catalyst in a cubic anvil apparatus at high temperature and high pressure (HPHT). Four kinds of catalysts at different synthetic times are adopted in synthetic process. After synthesizing the microstructure of the solvent metal samples are characterized by means of scanning electron microscopy (SEM). The results show that when the synthetic quality is relatively superior, the more primary lathy cementites are well distributed and shows parallel growth of the stripe beams. Besides, the edge of the cementite is more even. So the synthesis time and catalyst composition commonly influence the solvent metal microstructure, especially the quantity and shape of cementite.