Materi-Enabling the Future | Power Grid Innovator – High-Performance Aluminum-Based Electromagnetic Wire/Foil
Release time:
2025.03.20
Against the backdrop of the global response to climate change and the achievement of the “dual carbon” goals, the new power system—serving as the core platform for the energy revolution—is reshaping the operational logic and technological architecture of the power industry. The dawn of a new era in power generation brings with it challenges related to the demand for long-term energy-saving, green, and low-carbon innovative materials.
The China-Russia Joint Laboratory, as an explorer and pioneer in the field of advanced high-tech materials, takes “materials innovation driving the development of energy equipment” as its goal and adheres to the philosophy of “innovation for the people.” Focusing on TECO’s key core technologies, the laboratory performs surface functional ceramic treatment on electrical aluminum wires (as well as aluminum strips and aluminum foils), thereby developing a comprehensive system of electromagnetic wires and foils with outstanding overall performance—featuring ceramic insulation or composite insulation.
Right now, let’s quietly open the mysterious door to this issue’s exploration of new electrical materials and power equipment, savoring the unique charm and profound significance of “Materials Igniting the Future” and unlocking limitless possibilities for quality and tomorrow.
High-performance aluminum-based electromagnetic wire/foil
The unique Thermoelectrochemical Oxidation (TECO) technology developed by the China-Russia Joint Laboratory in situ generates a thin layer of Al₂O₃ ceramic on the surface of aluminum conductors. This ceramic layer boasts a high thermal conductivity, an enhanced temperature rating, and stronger molecular bond energy. By combining this TECO-treated aluminum conductor with domestically produced corona-resistant materials and adopting a ceramic-based composite insulation structure, we can significantly improve the corona resistance of domestically manufactured electromagnetic wires, greatly extend the corona-resistant lifespan of winding insulation, and reduce costs—thereby breaking the domestic reliance on foreign counterparts for corona-resistant electromagnetic wires.
The laboratory’s independently developed ceramic-insulated aluminum electromagnetic wire/foil includes flat aluminum wire, round aluminum wire, aluminum strip, and aluminum foil. These products feature high thermal conductivity, resistance to electromagnetic radiation, and mechanical flexibility. In addition, we offer polyimide-film-covered/polyimide and polyester enamel-composite insulated electromagnetic wires that meet over twenty national standards. These wires exhibit excellent properties such as corona resistance, resistance to refrigerants, oil resistance, radiation resistance, and extreme cold resistance, as well as resistance to partial discharge. Among them, the corona-resistant film-covered composite insulated electromagnetic wire stands out. It is also known as the “golden film” that benchmarks DuPont.
Ceramic-insulated flat aluminum wire
Ceramic-insulated round aluminum wire
Ceramic-insulated aluminum strip/foil
Composite Insulated Aluminum Electromagnetic Wire
The high-performance aluminum-based electromagnetic wires/foils mentioned above can be used in windings of motors, medium-frequency transformers, electromagnets, and other equipment operating under harsh conditions—such as high temperatures and large inrush currents—in specialized fields like aerospace and nuclear power.
Currently, the laboratory is equipped with a “roll-to-roll” continuous production line featuring an automated operating system and an intelligent quality control system. This automated production line is also the world’s only automated production line for aluminum conductor ceramic insulation.
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