1. Material Structure and Interfacial Engineering
1.1 Core-Shell Structure and Bonding System
(Copper-Coated Steel Fibers)
Copper-coated steel fibers (CCSF) are composite filaments consisting of a high-strength steel core enveloped by a conductive copper layer, forming a metallurgically bound core-shell design.
The steel core, generally low-carbon or stainless-steel, offers mechanical robustness with tensile strengths exceeding 2000 MPa, while the copper covering– usually 2– 10% of the total diameter– imparts exceptional electrical and thermal conductivity.
The interface between steel and copper is critical for efficiency; it is engineered through electroplating, electroless deposition, or cladding procedures to guarantee strong bond and minimal interdiffusion under operational anxieties.
Electroplating is the most common method, supplying precise thickness control and consistent coverage on continuous steel filaments drawn through copper sulfate bathrooms.
Proper surface area pretreatment of the steel, consisting of cleaning, pickling, and activation, makes certain ideal nucleation and bonding of copper crystals, preventing delamination during succeeding processing or service.
Over time and at raised temperatures, interdiffusion can form weak iron-copper intermetallic phases at the interface, which may jeopardize versatility and lasting dependability– a challenge reduced by diffusion obstacles or quick handling.
1.2 Physical and Functional Properties
CCSFs integrate the most effective attributes of both basic steels: the high flexible modulus and fatigue resistance of steel with the premium conductivity and oxidation resistance of copper.
Electrical conductivity typically ranges from 15% to 40% of International Annealed Copper Requirement (IACS), relying on layer density and purity, making CCSF substantially a lot 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 microsteel, 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