Patent ID: 6370213
Filing Date: 2002-04-09
Classification: G01N,G21C,Y02E

Abstract:
A sensor for measuring electrochemical corrosion potential in a nuclear reactor comprising:a tubular ceramic probe having a closed tip at one end packed with a metal and metal oxide powder; a metal support tube having one end receiving an opposite end of said probe, and joined thereto by a braze joint therewith; an electrical conductor extending through said support tube and probe, and having an end buried in said powder for electrical contact therewith; and a plasma sprayed ceramic band disposed on an outer surface of said tubular ceramic probe and said metal support tube, said plasma sprayed ceramic band bridging said tubular ceramic probe and said metal support tube at said joint for sealing thereof, said plasma sprayed ceramic band having a coefficient of expansion that is compatible with that of said tubular ceramic probe.