An apparatus for rapid measurements in aqueous electrolytes at high temperatures and pressures
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An apparatus is described to measure the initial polarization of freshly prepared surfaces of zirconium and its alloys in water under controlled conditions at high temperatures and pressures. The main feature is a working electrode capable of being pneumatically inserted into a replenished autoclave at high temperature and pressure. The autoclave is fitted with an external reference electrode at ambient temperature and pressure. Using this, the hydrogen electrode in 0.1 M NaOH has been shown to give an apparent temtemperature coefficient of about 1.0 mV° C−1 over the range 20–200° C.
KeywordsHydrogen Physical Chemistry Zirconium Ambient Temperature Reference Electrode
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