Remote sensing of aluminum alloy corrosion by SQUID magnetometry

被引：5
|
作者：
Juzeliunas, E
Ma, YP
Wikswo, JP
机构：
[1] Inst Chem, LT-2600 Vilnius, Lithuania
[2] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA
来源：
JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2004年 / 8卷 / 06期
关键词：
aluminum alloy; corrosion; hydrodynamic flow; magnetometry; SQUID;
D O I：
10.1007/s10008-003-0460-2
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Macroscopic magnetic fields were detected on corroding aluminum alloy (AA 2024) samples by SQUID magnetometry. The fields originated from corrosion reactions due to asymmetric sample geometry, electrolyte flow and differences in surface activity. Magnetic images were obtained by a SQUID magnetometer operating in liquid helium with a spatial resolution of approximately 1 mm. The measurements demonstrated SQUID capability for corrosion sensing across integrated media consisting of gaseous and solid dielectrics (air, plastics), an electronic conductor (aluminum alloy) and an ionic conductor (solution). The results show the potential of SQUID magnetometry for practical corrosion detection in restricted locations ("hidden" corrosion) and in subjects where solution flow is applied.
引用
收藏
页码：435 / 441
页数：7
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