Silver Coated Nickel Powder

Description

Silver-Coated Nickel Powder refers to a type of powder composed of nickel particles coated with a layer of silver. It combines the properties of both metals, offering a unique combination of conductivity, corrosion resistance, and thermal stability. The nickel core provides excellent electrical conductivity, while the silver coating enhances its corrosion resistance and solderability. Silver-Coated Nickel Powder is commonly used in various applications, including electronics, automotive, aerospace, and telecommunications, where it is utilized for conductive coatings, EMI shielding, soldering materials, and other high-performance applications that require reliable electrical conductivity and corrosion resistance.

Features

❶ Conductivity: Silver is an excellent conductor of electricity, while nickel also possesses good electrical conductivity. The combination of silver coating on nickel particles ensures high electrical conductivity, making it suitable for applications that require efficient current flow.

❷ Corrosion Resistance: The silver coating provides enhanced corrosion resistance, protecting the underlying nickel particles from oxidation and environmental degradation. This feature is particularly important in applications exposed to moisture, humidity, or corrosive environments.

❸ Solderability: The silver coating on the nickel particles improves the powder's solderability, allowing for easy and reliable soldering connections. This is beneficial in applications where joining or bonding with other components is required.

❹ Thermal Stability: Silver-Coated Nickel Powder exhibits good thermal stability, making it suitable for applications involving high temperatures. It can withstand elevated temperatures without significant degradation or loss of conductivity.
❺ Particle Size Control: The powder can be manufactured with controlled particle size distribution, enabling precise customization for specific applications. Different particle sizes can be selected to achieve desired conductivity, flowability, or surface coverage.
❻ Compatibility: Silver-Coated Nickel Powder can be compatible with different binder systems, allowing for easy integration into various formulations and manufacturing processes.

Applications

1. Conductive Coatings

The powder is used in the formulation of conductive coatings for electronic components, such as printed circuit boards (PCBs), connectors, and electrical contacts. The silver coating provides excellent electrical conductivity, while the nickel core offers enhanced mechanical strength and corrosion resistance.

2. EMI Shielding

The powder is utilized in electromagnetic interference (EMI) shielding applications. It is incorporated into paints, adhesives, or coatings to provide a conductive barrier that prevents the leakage of electromagnetic radiation from electronic devices, thus minimizing interference with nearby equipment.

3. Electrical Contacts

Silver-Coated Nickel Powder is employed in the manufacturing of electrical contacts, such as switches, relays, and connectors. The powder is mixed with a binder material to form a paste or a composite that can be applied to contact surfaces. The silver coating ensures low contact resistance and reliable electrical performance.

4. Thermal Management

In applications where efficient heat dissipation is crucial, such as LED lighting, power electronics, and heat sinks, Silver-Coated Nickel Powder can be utilized to enhance thermal conductivity. It helps in efficiently transferring heat away from heat-generating components, improving overall device performance and reliability.

5. Sensor Technology

The powder finds applications in sensor technologies, including gas sensors, humidity sensors, and temperature sensors. It can be incorporated into sensing elements or used as conductive inks for printed sensor circuits, enabling accurate and responsive sensor functionality.

6. Additive Manufacturing

Silver-Coated Nickel Powder is also utilized in additive manufacturing techniques, such as 3D printing. It can be used as a conductive ink or powder to produce complex conductive structures, circuits, or functional components directly.

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Specifications

Grade	Morphology	Silver content (wt %)	Apparent density (g/cm³)	100% mesh passing scree
Grade	Morphology	Silver content (wt %)	Apparent density (g/cm³)	100% mesh passing scree
SN-18-B-B	Near-Spherical	18	4.0-4.5	325
SN-20-S	Near-Spherical	20	3.5-4.2	450
SN-30-S	Near-Spherical	30	3.5-4.2	450
SN-40-S	Near-Spherical	40	4.0-4.5	450