Effects of carbonyl nickel powders on {100}-oriented single diamond under high pressure and high temperature

被引：15

作者：

Li, Yong ^{[1
]}

Jia, Xiaopeng ^{[1
]}

Hu, Meihua ^{[1
]}

Yan, Bingmin ^{[1
]}

Zhou, Zhenxiang ^{[1
]}

Fang, Chao ^{[1
]}

Zhang, Zhuangfei ^{[1
]}

Ma, Hongan ^{[1
]}

机构：

[1] Jilin Univ, State Key Lab Superhard Mat, Changchun 130012, Peoples R China

来源：

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2012年 / 34卷

基金：

中国国家自然科学基金;

关键词：

High pressure and high temperature; Diamond; Nitrogen concentration; Morphology; HIGH-NITROGEN CONCENTRATION; HPHT SYNTHESIS; CRYSTAL-GROWTH; IMPURITIES; CRYSTALLIZATION; CATALYST; SOLVENT; SYSTEM; NAN3;

D O I：

10.1016/j.ijrmhm.2012.03.005

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, perfect {100}-oriented single diamonds with higher nitrogen concentration are successfully synthesized at a pressure of 5.5 GPa and temperature ranging from 1285 to 1294 degrees C by the adjustment of catalyst (Fe64Ni36) components. The content of carbonyl nickel powders has significant effect on the nitrogen concentration and the growth rate of the diamond crystals. Fourier transform infrared (FTIR) measurements reveal that the value of nitrogen concentration for the synthesized diamond is up to approximately 1020 ppm. Furthermore, basing on the diamond surface configuration, the structure of growth steps arranged layer by layer on {111} face is noticed using scanning electron microscopy (SEM), whereas the occurrence is not observed on {100} face. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：27 / 31

页数：5

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