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Summary: MEASUREMENTS OF SPECIFIC ELECTRICAL CONTACT RESISTANCE
BETWEEN SIC AND LEAD-LITHIUM EUTECTIC ALLOY
Neil B. Morley, Albert Medina, and Mohamed A. Abdou
Mechanical &Aerospace Engineering, UCLA, Los Angeles, CA, 90095-1597, USA, morley@fusion.ucla.edu
Silicon Carbide (SiC) has been proposed as a possible
candidate material for flow channel inserts for the dual
coolant blanket concept. Here, the total electrical
resistance of disks of high purity CVD SiC were measured
with liquid lead-lithium eutectic (LLE) alloy melts serving
as electrodes. From this data, the relative contributions of
intrinsic resistivity and surface contact resistance as a
function of measurement temperature was deduced. It
was shown that after a relatively short period of exposure,
once wetting at the interface was achieved, that contact
resistance at the SiC/LLE interface was not significant.
The contact resistance during initial exposure did not
behave in a repeatable consistent way and appears to be
affected by small variations in sample preparation. For
modeling purposes, the electrical properties of an FCI
can be based on the intrinsic electrical conductivity of the
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