189 results about "Corrosion behavior" patented technology

The invention relates to an experimental device for the jet etching simulation and electrochemical test of a high-temperature high-pressure loop, which belongs to the field of electrochemistry and is particularly applied to the simulation of scouring corrosion conditions of complex parts such as elbows, T joints and the like in pipelines for collecting and delivering petroleum, natural gases and the like to perform high-temperature high-pressure multiphase fluid pipeline part scouring corrosion simulation experiments and perform high-temperature high-pressure fluid scouring corrosion in-situ electrochemical signal tests under scouring condition. The device consists of an autoclave, a heating and heat preservation system, a loop water inlet, a three-electrode system, pipeline connecting flanges, a circulation loop, a high-temperature high-pressure fluid flow meter, a control valve, a fluid outlet, a regenerating pump, a circulating cooling system, a temperature measurement system, a loop water outlet, a spray nozzle, a sample fixture, a control cabinet, a signal transduction path, an external electrochemical workstation and an external high pressure gas cylinder. The device can well simulate the scouring corrosion conditions of a fluid medium in a gas pipeline and test electrochemical signals such as polarization curves, AC impedance and the like of working electrodes under high speed jet condition, and is significant for researches on high-temperature high-pressure fluid scouring corrosion behaviors, rules and mechanisms.

A system and method capable of performing online corrosion monitoring of a component installed in a gas turbine. A sensing device is located so that electrodes thereof are exposed to an operating environment within the gas turbine section containing the component. The electrodes are formed of a material so that the component and electrodes similarly respond to corrosive agents within the gas turbine section. The electrodes are electrically insulated from each other and each electrode is operable as an anodic electrode or a cathodic electrode, depending on the extent of corrosion thereat, so that each electrode has an electrical potential value, voltages exist across the electrodes, electric currents flow between the electrodes, and the electrical potential / current values correspond to corrosion behaviors at the anodic electrodes. During gas turbine operation, output signals are obtained from the sensing device and indications are provided as to when certain maintenance operations should be performed on the gas turbine.