NDLI: Electrical resistivity of TiB$_{2}$/C composite cathode coating for aluminum electrolysis

Content Provider	Springer Nature Link
Author	Li, Jie Lü, Xiao jun Li, Qing yu Lai, Yan qing Yang, Jian hong
Copyright Year	2006
Abstract	The electrical resistivity of TiB$_{2}$/C cathode composite coating at different temperatures was measured with the electrical conductivity test device; the effects of TiB$_{2}$ content and kinds of carbonaceous fillers as well as their mean particle size on their electrical resistivities were investigated. The results show that electrical resistivity of the coating decreases with the increase of TiB$_{2}$ content and the decrease of its mean particle size. When the mass fraction of TiB$_{2}$ increases from 30% to 60%, the electrical resistivity of the coating at room temperature decreases from 31.2 µΘ · m to 23.8 µΘ · m. The electrical resistivity of the coating at 960 °C lowers from 76.1 µΘ · m to 38.4 µΘ · m with the decrease of TiB$_{2}$ mean particle size from 12 µm to 1 µm. The kinds of carbonaceous fillers have great influence on the electrical resistivity of TiB$_{2}$/C composite coating at 960 °C, when the graphite, petroleum coke and anthracite are used as fillers, the electrical resistivities of the coating are 20.3 µΘ · m, 53.7 µΘ · m and 87.2 µΘ · m, respectively. For the coating with petroleum coke filler, its electrical resistivity decreases with the increase of the mean particle size of petroleum coke filler. The electrical resistivity at 960 °C decreases from 56.2 µΘ · m to 48.2 µΘ · m with the mean particle size of petroleum coke increasing from 44 µm to 1200 µm. However, too big carbonaceous particle size has adverse influence on the abrasion resistance of coating. Its proper mean particle size is 420 µm.
Starting Page	209
Ending Page	213
Page Count	5
File Format	PDF
ISSN	10059784
Journal	Journal of Central South University of Technology
Volume Number	13
Issue Number	3
e-ISSN	19930666
Language	English
Publisher	Central South University of Technology
Publisher Date	2006-01-01
Publisher Place	Changsha
Access Restriction	Subscribed
Subject Keyword	aluminum electrolysis composite material TiB$_{2}$ coating electrical resistivity Engineering Metallic Materials
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Mechanical Engineering

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