DEVELOPMENT OF AN ELECTROCHEMICAL PROBE FOR MONITORING THE HIC SUSCEPTIBILITY OF BOILER/PIPE DURING PICKLING
锅炉/管道酸洗时氢致腐蚀裂开危险性电化学检(监)测技术的研究

For in situ inspecting the hydrogen induced cracking (HIC) susceptibility of boiler/pipe system during pickling, an intelligent electrochemical probe technique is developed. Herewith a new kind of electrochemical hydrogen sensor is introduced and the relatioship between the measured signal (hydrogen permeation current) of the sensor and the strength/embrittlement of the boiler steels in acids is studied. The design principle, structure, performance and the simulating test results of the probe, which has capability of data sampling, logging, storing, processing, result evaluating and tabulating out, are reported.