Core Applications and Functional Analysis of High-Temperature Water-Oxygen Corrosion Testing
High-temperature water–oxygen corrosion testing is a critical technical method that simulates high-temperature conditions, high water-vapor partial pressure, and specific oxygen concentrations to evaluate the corrosion resistance of materials under extreme service conditions. Its core value lies in providing a scientific basis for material selection, safety assessment, and investigation of corrosion mechanisms, with broad applications in aerospace, nuclear power, chemical engineering, and other fields.

Main Applications of High-Temperature Water-Oxygen Corrosion Testing
Corrosion resistance assessment of materials: By simulating high-temperature, high-pressure water–oxygen environments, the corrosion resistance of metals, ceramic matrix composites, coatings, and other materials is evaluated to provide data support for material selection under extreme operating conditions24.
Study of stress corrosion cracking (SCC): Under the combined effects of temperature, pressure, oxygen, and stress, the crack susceptibility of materials is evaluated to ensure the safety of critical components such as aircraft engines and nuclear reactors.25
Corrosion mechanism research: By observing corrosion morphologies and analyzing the composition of corrosion products, the chemical processes underlying water–oxygen corrosion are elucidated, thereby providing a theoretical foundation for the development of anti-corrosion coatings and material modification25.
Core Functions and Technical Features of the Testing System
Simulation Environment and Parameter Control Capabilities
High-Temperature, High-Pressure Environment Simulation
The maximum operating temperature can reach several hundred degrees Celsius, and the pressure can reach tens of megapascals, enabling precise reproduction of actual operating conditions such as those in turbojet engines and nuclear power steam generators24.
Some equipment supports simulation of high-velocity water-flow impact corrosion; for example, the “high-speed” system for mid-range electric furnaces can simulate the scouring effect of high-temperature, high-velocity steam³.
Precise control of water and oxygen parameters
The dissolved oxygen concentration, water vapor partial pressure, and water flow rate are controlled using components such as a dual-plunger pump and a humidity generator, thereby meeting the testing requirements for various materials35.
A pure water medium is used, with real-time monitoring of parameters such as pH and conductivity to ensure the stability of corrosion conditions24.
Typical Application Areas and Cases
Aerospace: For ceramic matrix composites used in the hot-end components of turbofan engines, high-temperature steam oxidation corrosion is simulated to evaluate the thermochemical stability of environmental barrier coatings (EBCs)13.
Nuclear power and energy sector: Testing the susceptibility of nuclear steam-generator tubing to stress-corrosion cracking under high-temperature, high-pressure water–oxygen conditions to ensure the safe operation of nuclear reactors.24
New materials research and development: By analyzing corrosion products, the compositional design of ultra-high-temperature alloys and thermal barrier coatings is optimized, for example, by promoting the formation of a dense oxide layer to extend material service life35.
Technology Development Trends
In recent years, high-temperature water–oxygen corrosion testing equipment has evolved toward multi-field coupling and automation. For instance, the patented “thermo-chemical coupling test apparatus” integrates thermal cycling, constant-temperature water–oxygen corrosion testing, and nondestructive evaluation modules, enabling service-performance assessment of materials at the component level5. Looking ahead, the integration of AI-based corrosion prediction models with real-time damage-monitoring technologies will further enhance testing efficiency and data interpretation capabilities.

(The above content has been collected, summarized, and generated by AI for reference only.)