A wear-resistant and corrosion-resistant ti-al-based high-entropy composite coating layer, a preparation method and application thereof
By preparing a TiAl-based high-entropy composite coating on a Ti-6Al-4V alloy substrate, introducing Cr, Ni, and Mn elements, and optimizing the laser cladding process to form a multiphase structure, the wear resistance and corrosion resistance of the Ti-6Al-4V alloy in a chloride-containing environment were solved, and the wear and corrosion resistance of the coating were synergistically improved under dynamic conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
- Filing Date
- 2026-03-26
- Publication Date
- 2026-07-17
AI Technical Summary
Ti-6Al-4V alloys exhibit insufficient wear resistance in chloride-containing environments, and the passivation film is easily damaged during friction, leading to synergistic failure of friction and corrosion. Existing TiAl-based coatings struggle to achieve a synergistic improvement in wear resistance and corrosion resistance under dynamic conditions.
By preparing a TiAl-based high-entropy composite coating on the surface of a Ti-6Al-4V alloy substrate, introducing Cr, Ni and Mn alloying elements, optimizing the laser cladding process, forming a multiphase structure, and dynamically forming a dense passivation film, the wear resistance and corrosion resistance of the coating are improved.
In a wide pH range containing Cl-, the coating exhibits high hardness, strong interfacial adhesion, dynamic repair of the passivation film, and effective resistance to friction-corrosion synergistic failure, making it suitable for harsh working conditions such as marine and chemical industries.
Smart Images
Figure CN122406210A_ABST