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Preparation, characterization and electrochemical properties of boron-doped diamond films on Nb substrates

Preparation, characterization and electrochemical properties of boron-doped diamond films on Nb substrates
Preparation, characterization and electrochemical properties of boron-doped diamond films on Nb substrates
A series of boron-doped polycrystalline diamond films were prepared by hot filament (HF) chemical vapor deposition on Nb substrates. The effects of B/C ratio of reaction gas on film morphology, growth rate, chemical bonding states, phase composition and electrochemical properties of each deposited sample were studied by scanning electron microscopy, Raman spectra, X-ray diffraction, microhardness indentation, and electrochemical analysis. Results show that the average grain size of diamond and the growth rate decrease with increasing the B/C ratio. The diamond films exhibit excellent adhesion under Vickers microhardness testing (9.8 N load). The sample with 2% B/C ratio has a wider potential window and a lower background current as well as a faster redox reaction rate in H2SO4solution and KFe(CN)6 redox system compared with other doping level electrodes.
1003-6326
1334-1341
Yu, Zhi-ming
2cd2b0bf-c59d-4eb1-bec8-a6368037493c
Wang, Jian
010afd88-adf6-442d-8329-64912c031eed
Wei, Qiu-ping
2fbeaee3-6287-4846-8bcb-787fb306609a
Meng, Lingcong
8de7a0cb-c6aa-4dfd-94f5-bcdae5105a56
Hao, Shi-meng
28b1fb50-704d-4c7f-9838-68af162d7bb5
Long, Fen
458cfe1a-b96c-4202-b05e-0bcfb809eec7
Yu, Zhi-ming
2cd2b0bf-c59d-4eb1-bec8-a6368037493c
Wang, Jian
010afd88-adf6-442d-8329-64912c031eed
Wei, Qiu-ping
2fbeaee3-6287-4846-8bcb-787fb306609a
Meng, Lingcong
8de7a0cb-c6aa-4dfd-94f5-bcdae5105a56
Hao, Shi-meng
28b1fb50-704d-4c7f-9838-68af162d7bb5
Long, Fen
458cfe1a-b96c-4202-b05e-0bcfb809eec7

Yu, Zhi-ming, Wang, Jian, Wei, Qiu-ping, Meng, Lingcong, Hao, Shi-meng and Long, Fen (2013) Preparation, characterization and electrochemical properties of boron-doped diamond films on Nb substrates. Transactions of Nonferrous Metals Society of China, 23 (5), 1334-1341. (doi:10.1016/S1003-6326(13)62601-1).

Record type: Article

Abstract

A series of boron-doped polycrystalline diamond films were prepared by hot filament (HF) chemical vapor deposition on Nb substrates. The effects of B/C ratio of reaction gas on film morphology, growth rate, chemical bonding states, phase composition and electrochemical properties of each deposited sample were studied by scanning electron microscopy, Raman spectra, X-ray diffraction, microhardness indentation, and electrochemical analysis. Results show that the average grain size of diamond and the growth rate decrease with increasing the B/C ratio. The diamond films exhibit excellent adhesion under Vickers microhardness testing (9.8 N load). The sample with 2% B/C ratio has a wider potential window and a lower background current as well as a faster redox reaction rate in H2SO4solution and KFe(CN)6 redox system compared with other doping level electrodes.

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More information

Accepted/In Press date: 15 November 2012
Published date: 1 May 2013

Identifiers

Local EPrints ID: 413551
URI: http://eprints.soton.ac.uk/id/eprint/413551
ISSN: 1003-6326
PURE UUID: ec9719c5-7755-4b3d-beb7-04483847b6e4
ORCID for Lingcong Meng: ORCID iD orcid.org/0000-0002-3995-3584

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Date deposited: 25 Aug 2017 16:31
Last modified: 15 Mar 2024 13:13

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Contributors

Author: Zhi-ming Yu
Author: Jian Wang
Author: Qiu-ping Wei
Author: Lingcong Meng ORCID iD
Author: Shi-meng Hao
Author: Fen Long

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