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

页码：56 / 60

页数：5

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