NF23 PTC Ni-Fe Alloy Wire for Precise Thermal Control and Regulation in Current-Limiting Devices

PTC Ni-Fe Alloy Wire NF23 for Different Electric Heaters, Resistance 0.23

PTC Ni-Fe alloy NF23 is a unique material known for its positive temperature coefficient (PTC) effect, which allows it to self-regulate heat output in response to temperature changes. This alloy is particularly effective in electrochemical applications, such as in the oxygen evolution reaction (OER), where it demonstrates impressive catalytic activity with an overpotential of 242 mV at 10 mA cm⁻² in 1.0 M KOH. Its high electrical resistivity and the ability to facilitate hydrogen evolution reactions (HER) make it a bifunctional catalyst for overall water splittin.

The alloy's resistance to corrosion and oxidation at elevated temperatures is another key feature, making it suitable for high-temperature applications in various industries, including chemical processing and marine engineering. NF23's thermal stability up to 1300°C is also noteworthy, which is crucial for its use in industrial furnaces and heating systems .

Mechanically, Ni-65 alloy exhibits good strength and hardness, which can be further enhanced through cold working and heat treatment processes. Its good electrical and thermal conductivity make it an ideal material for resistance heating components.

In terms of market applications, NF23 alloy is in high demand across the aerospace, gas & oil, and electrical & electronics sectors for its combination of properties like ductility, malleability, corrosion resistance, and strength. It also shows potential as a catalyst in fuel cells and other electrochemical devices due to its efficient catalytic performance .

In summary, PTC Ni-Fe alloy NF23 is a high-performance material with significant potential in catalytic, corrosion-resistant, and high-temperature applications, underpinning its importance in the modern industry .

Key features of the PTC Ni-Fe alloy NF23 include:

Applications:

• Proton Exchange Membrane Fuel Cells (PEMFCs):

NF23 alloy is used in PEMFCs as a catalyst material to enhance the efficiency and durability of the fuel cell, particularly in the cathodic oxygen reduction reaction (ORR) .​

• Catalysts in Electrochemical Reactions: 

The alloy's composition makes it suitable for use in electrocatalysts, where it can facilitate oxygen evolution reactions (OER) and hydrogen evolution reactions (HER) .

• Automotive and Aerospace Industry:

NF23 alloy can be employed in high-temperature applications within the automotive and aerospace industries, such as turbine discs, due to its high strength and resistance to corrosion at elevated temperatures .

• Corrosion-resistant Coatings:

Given its resistance to various corrosive environments, NF23 alloy can be used in protective coatings for components that are exposed to harsh conditions .

• Heat Treatment Equipment: 

The alloy's high-temperature stability and resistance to oxidation make it suitable for use in heat treatment furnaces and related equipment .

• Chemical Processing:

NF23 alloy can be utilized in chemical processing equipment, especially where there is exposure to aggressive chemicals and high temperatures .

• Marine Applications:

Due to its resistance to seawater corrosion, NF23 alloy is appropriate for marine hardware and equipment that operates in saline environments .

Resistance Values and Naming Conventions for PTC Ni-Fe Alloy Wires

Chemical Composition of Different Models of PTC Ni-Fe Alloy Wire

Temperature Coefficients of Different Models of PTC Ni-Fe Alloy Wire

Mechanical properties (tensile strength)

Size (diameter)

Support and Services:

1. Technical Consultation

2. Product Selection

3. Time Guarantee

4. Warranty and After-Sales Support

Q&A:

1. Can you provide free samples?

If the samples you need happen to be in stock, we can provide samples free of charge.

2. If we use custom products, will the price be higher?

Usually our prices are higher for special products, because it is related to production efficiency, but all prices depend on the quantity of the order.

3. What is the minimum quantity the customer can order?

If the stock of the required product is sufficient, we can provide a single copy as a sample, if the stock is insufficient, the minimum order quantity is 5kg.