Characteristic Evaluation Of Corrosion Of
Aluminum-based Rigid Conductor Line
Author(s)
S. Mohri & Y. Sato
Abstract
Aluminum-based rigid conductor lines have been widely used for tunnel sections
due to a cost-saving factor and their lightweight structure. Aluminum, however,
is easily corroded, and it is therefore important to understand the corrosive
characteristics of aluminum under the practical environment. The corrosion of
the conductor lines inside the tunnel section is mainly due to groundwater
seepage, containing alkali components or seawater. The authors carried out an
accelerated corrosion test with an aqueous solution of sodium hydroxide to
comprehend the corrosive characteristics with alkali components. Another
problem is a corrosion that is likely to occur at areas where different materials
contact each other. The authors also carried out saltwater spraying tests for the
contact area of aluminum-base and bronze contact wire with various corrosion
resistances to investigate the corrosion caused thereby. The results of these tests
are described elsewhere in this paper, and the authors have indicated the
predicted lifetime of aluminium-based conductor lines under the various
environments.
Keywords: corrosion, rigid conductor line, aluminum, tunnel section, water
seepage.
1 Introduction
Rigid conductor lines have been widely provided with tunnel sections or subway
systems because the height of power collection equipment can be lowered.
Aluminium-based rigid conductor is especially effective for power collection
quality due to its lightweight structure. Aluminium however easily
corroded [1], it is therefore important to understand the corrosive characteristics
Keywords
corrosion, rigid conductor line, aluminum, tunnel section, water
seepage.
Related Book
Other papers in this volume
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