The growth mechanism of B/N co-doped diamonds under high pressure and high temperature

被引：14
作者：
Yan, Bingmin [1 ]
Jia, Xiaopeng [1 ]
Sun, Shishuai [1 ,2 ]
Zhou, Zhenxiang [1 ]
Fang, Chao [1 ]
Chen, Ning [1 ]
Li, Yadong [1 ]
Li, Yong [3 ]
Ma, Hong-an [1 ]
机构：
[1] Jilin Univ, Natl Lab Superhard Mat, Changchun 130012, Peoples R China
[2] Tianjin Univ Technol, Coll Sci, Tianjin, Peoples R China
[3] Tongren Univ, Phys & Appl Engn Dept, Guizhou, Peoples R China
来源：
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2015年 / 48卷
基金：
美国国家科学基金会;
关键词：
Characterization; Morphology; B/N co-doped diamonds; CHEMICAL-VAPOR-DEPOSITION; BIAS-ENHANCED NUCLEATION; ORIENTED DIAMOND; POWDER CATALYST; HPHT SYNTHESIS; NITROGEN; BORON; CRYSTALS; SYSTEM; GRAPHITE;
D O I：
10.1016/j.ijrmhm.2014.07.033
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The B/N co-doped diamonds have been successfully fabricated in the graphitic mixtures of C and BN system with Fe-Ni alloy as catalyst under high pressure and high temperature conditions. Morphology and structural properties of the synthesized samples are characterized by optical microscope, scanning electron microscopy and X-ray diffraction. Raman spectrum and X-ray photoelectron spectroscopy are used to confirm their chemical composition and atomic-level hybrid qualities. Our results indicate that B, C and N combined with each other and formed stable chemical bonds in B/N co-doped diamonds, and the h-BN additive played an important role in determining the morphology of diamond crystal. The B/N co-doped diamond shows strip shape elongated along the {111} direction. According to our results, the possible growth mechanism is discussed. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：56 / 60
页数：5
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