Low-cost high-entropy alloy and coating preparation method for offshore engineering equipment
By preparing a FeCrNiCu0.5-yMoxSiy high-entropy alloy coating on marine engineering equipment, the corrosion and wear problems of the equipment in extreme environments were solved, achieving high-efficiency wear and corrosion resistance and extending the service life of the equipment.
Patent Information
- Application Number
- CN202410454771.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-16
- Publication Date
- 2026-06-26
- Estimated Expiration
- 2044-04-16
AI Technical Summary
Existing marine engineering equipment, such as offshore drilling platforms and bridges, suffer from both corrosion and wear in extreme environments, resulting in a shortened service life. Furthermore, existing high-entropy alloy coatings are prone to cracks and pores during laser cladding, and have low hardness and insufficient wear and corrosion resistance.
A high-entropy alloy coating of FeCrNiCu0.5-yMoxSiy is formed on the surface of Q235 steel substrate by laser cladding technology, consisting of FCC and BCC phases. Mo and Si elements are added to replace the precious metal Co to improve corrosion resistance. The powder is ball-milled and vacuum-dried to ensure uniform mixing.
The prepared high-entropy alloy coating exhibits excellent wear and corrosion resistance on marine engineering equipment, significantly reducing wear rate and corrosion current density, and forming a good metallurgical bond with the substrate, thereby extending the service life of the equipment.