Mainly investigates environmental fatigue degradation and related mechanisms of structural materials used in nuclear power plants (NPPs) in high temperature high pressure water (below 350℃/20 MPa) and supercritical water (above 374℃/22.1 MPa) environments. The background is concerned on energy safety and the main contents include service safety, domestic design and localization manufacture of materials, optimization and control of operation water chemistry, on-line monitoring theory and technique of service degradation, EAF assessment methods for the key engineering materials used in current and advanced pressurized water reactor NPPs as well as the generation IV supercritical water cooling reactor. A series of equipments have been designed and established to simulate service conditions of structural materials in NPPs, capable of in-situ electrochemical measurement, optical observation, Raman spectra analysis, acoustic emission monitoring and mechanical tests in high temperature high pressure water environments. Remarkable progress has been made on simulating and testing techniques of high temperature water and supercritical water, on-line electrochemical measurement and analysis in high temperature aqueous environments, corrosion fatigue degradation behaviors and mechanisms for materials in high temperature pressurized water, as well as collection of basic data, service water chemistry, EAF evaluation models and life prediction for in-service materials in NPPs.

Simulating and Testing Techniques,EAF Evaluation and Thermodynamic & Kinetic of Klectrochemical Corrosion in High Temperature Pressurized Water Environments