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Surface treatment technology for aluminum alloys using the steam process [Shibaura Institute of Technology]

Simultaneously imparting corrosion resistance and strength to aluminum alloys in a single process.

This technology is a groundbreaking surface treatment technique that simultaneously imparts corrosion resistance and strength to aluminum alloys in a single process. By performing steam treatment, the formation of a γ-AlO(OH) film on the surface of the aluminum alloy and the shaping of nanoclusters within the substrate due to heat progress, both corrosion resistance and strength enhancement are achieved simultaneously. Due to the vapor-phase treatment, it is optimal for processing components with large surface areas and complex shapes, and it is a technology that enables environmental load reduction and cost reduction without the use of chemical agents containing heavy metals. Features of the technology: - Coating properties: High corrosion resistance, excellent adhesion (evaluation results available) - Substrate properties: Improved strength, enhanced fatigue life (evaluation results available) - Low environmental load, simple process, and low cost without the use of chemical agents Expected application fields: - Surface treatment for heat exchangers, electronic devices, precision instruments, automotive materials, construction components, etc.