Formation of different arc-anode attachment modes and their effect on temperature fluctuation for carbon nanomaterial production in DC arc discharge

被引:29
作者
Liang, Feng [1 ]
Tanaka, Manabu [2 ]
Choi, Sooseok [3 ]
Watanabe, Takayuki [2 ]
机构
[1] Kunming Univ Sci & Technol, Natl Key Lab Clean Applicat Complex Nonferrous Me, Kunming 650093, Peoples R China
[2] Kyushu Univ, Dept Chem Engn, Fukuoka 8190395, Japan
[3] Jeju Natl Univ, Dept Nucl & Energy Engn, Jeju 63243, South Korea
关键词
Arc-anode attachment; Temperature; Two-colour pyrometty; Carbon nanomaterial; INTENSITY ARGON ARC; BOUNDARY-LAYER;
D O I
10.1016/j.carbon.2017.02.084
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Diffuse and multiple arc-anode attachment modes were observed when using DC arc discharge to prepare carbon nanomaterials. The effects of arc current and electrode gap distance on the formation of different attachment modes were investigated. The formation of different attachment modes is explained by the competition of the cathode jet and the anode jet. During the arc discharge, the surface temperature of the carbon electrode was measured by two-colour pyrometry combined with a high-speed camera employing appropriate band-pass filters. The relationship between the arc-anode attachment mode and the temperature fluctuation of the electrode surface was investigated. Due to the unbalanced Lorenz force, the rotation of arc spot was severe in diffuse arc-anode attachment mode, which led to relatively large temperature fluctuations on the anode surface, resulting in low purity of synthesised multi-wall carbon nanotubes on the anode deposit. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码:100 / 111
页数:12
相关论文
共 18 条
[1]   Effect of current connection to the anode nozzle on plasma torch efficiency [J].
Collares, MP ;
Pfender, E .
IEEE TRANSACTIONS ON PLASMA SCIENCE, 1997, 25 (05) :864-871
[2]   ANALYSIS OF THE ANODE BOUNDARY-LAYER OF HIGH-INTENSITY ARCS [J].
DINULESCU, HA ;
PFENDER, E .
JOURNAL OF APPLIED PHYSICS, 1980, 51 (06) :3149-3157
[3]  
Duan Z., 1996, THERM SPRAY TECHNOL, V11, P44
[4]  
Finkelnburg W, 1956, Encyclopedia of physics, V22
[5]   The anode region of electric arcs: a survey [J].
Heberlein, J. ;
Mentel, J. ;
Pfender, E. .
JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2010, 43 (02)
[6]   HELICAL MICROTUBULES OF GRAPHITIC CARBON [J].
IIJIMA, S .
NATURE, 1991, 354 (6348) :56-58
[7]   SOLID C-60 - A NEW FORM OF CARBON [J].
KRATSCHMER, W ;
LAMB, LD ;
FOSTIROPOULOS, K ;
HUFFMAN, DR .
NATURE, 1990, 347 (6291) :354-358
[8]   Effect of arc behaviour on the temperature fluctuation of carbon electrode in DC arc discharge [J].
Liang, F. ;
Tanaka, M. ;
Choi, S. ;
Watanabe, T. .
26TH SYMPOSIUM ON PLASMA SCIENCES FOR MATERIALS (SPSM26), 2014, 518
[9]   Investigation of the relationship between arc-anode attachment mode and anode temperature for nickel nanoparticle production by a DC arc discharge [J].
Liang, Feng ;
Tanaka, Manabu ;
Choi, Sooseok ;
Watanabe, Takayuki .
JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2016, 49 (12)
[10]   Measurement of anode surface temperature in carbon nanomaterial production by arc discharge method [J].
Liang, Feng ;
Tanaka, Manabu ;
Choi, Sooseok ;
Watanabe, Takayuki .
MATERIALS RESEARCH BULLETIN, 2014, 60 :158-165