Copper-Coated Steel Fibers: Hybrid Conductive Reinforcements for Advanced Composites concrete and steel
1. Product Composition and Interfacial Engineering
1.1 Core-Shell Framework and Bonding Mechanism
(Copper-Coated Steel Fibers)
Copper-coated steel fibers (CCSF) are composite filaments including a high-strength steel core enveloped by a conductive copper layer, creating a metallurgically bonded core-shell architecture.
The steel core, commonly low-carbon or stainless-steel, supplies mechanical robustness with tensile strengths exceeding 2000 MPa, while the copper covering– normally 2– 10% of the overall size– conveys outstanding electric and thermal conductivity.
The user interface in between steel and copper is critical for performance; it is engineered through electroplating, electroless deposition, or cladding processes to guarantee solid attachment and marginal interdiffusion under functional stress and anxieties.
Electroplating is one of the most common technique, providing specific thickness control and uniform insurance coverage on constant steel filaments drawn through copper sulfate baths.
Proper surface area pretreatment of the steel, including cleaning, pickling, and activation, ensures optimal nucleation and bonding of copper crystals, protecting against delamination during succeeding processing or solution.
Over time and at elevated temperatures, interdiffusion can develop brittle iron-copper intermetallic stages at the user interface, which may compromise adaptability and long-term reliability– a challenge minimized by diffusion obstacles or quick processing.
1.2 Physical and Practical Quality
CCSFs integrate the most effective characteristics of both constituent metals: the high flexible modulus and fatigue resistance of steel with the superior conductivity and oxidation resistance of copper.
Electrical conductivity commonly ranges from 15% to 40% of International Annealed Copper Standard (IACS), depending upon covering thickness and purity, making CCSF considerably more conductive than pure steel fibers (
Cabr-Concrete is a supplier under TRUNNANO of Calcium Aluminate Cement with over 12 years of experience in nano-building energy conservation and nanotechnology development. It accepts payment via Credit Card, T/T, West Union and Paypal. TRUNNANO will ship the goods to customers overseas through FedEx, DHL, by air, or by sea. If you are looking for concrete and steel, please feel free to contact us and send an inquiry.
Tags: micro steel fiber,steel fiber,steel fiber reinforced concrete
All articles and pictures are from the Internet. If there are any copyright issues, please contact us in time to delete.
Inquiry us
