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Under high temperature and strong oxidizing conditions, pure nickel wire will undergo oxidation reactions. The specific oxidation reaction depends on the type of oxidant, temperature and the interaction between the oxidant and pure nickel.
Under common atmospheric conditions, pure nickel wire reacts with oxygen to form nickel oxide (NiO). This oxidation reaction usually occurs at high temperatures, especially to form an oxide layer on the surface of the nickel wire. The thin layer formed by nickel oxide can provide some corrosion resistance and oxidation protection, but under extreme conditions, such as high temperature and the presence of strong oxidants, the nickel oxide layer may thicken further.
When pure nickel wire is exposed to steam or the presence of water, a steam oxidation reaction occurs. This reaction results in the formation of a mixture of nickel hydroxide (Ni(OH)2) and nickel oxide (NiO) on the surface of the nickel wire. This oxide layer is usually gray or green in color and has better corrosion resistance.
In some special oxidizing environments, such as gases containing sulfide or chloride, pure nickel wire may undergo oxidation reactions of sulfide or chloride. These reactions lead to the formation of corresponding sulfide or chloride oxides on the surface of pure nickel wire.
It should be noted that oxidation reactions of pure nickel wire may negatively affect its performance and application. The formation of oxide layers can lead to increased resistance, reduced electrical conductivity, and changes in mechanical properties of the material. Therefore, the interaction of pure nickel wire with oxidants needs to be considered in specific applications, and appropriate protective measures or other materials must be selected to protect the pure nickel wire from the effects of oxidation.
The oxide layer of pure nickel wire will affect its conductive properties. Normally, pure nickel is a good electrical conductor, but when an oxide layer forms on the surface of pure nickel, the conductive performance may be affected, mainly in the following aspects:
Increased resistance: The formation of an oxide layer increases the resistance of pure nickel wire. The oxide layer itself is an insulator and has a lower electrical conductivity than pure nickel. Therefore, when an oxide layer is present, the flow of electrical current in a pure nickel wire is impeded, resulting in increased resistance.
Reduced conductive paths: The oxide layer will form an insulating layer on the surface of the pure nickel wire, which will reduce the effective conductive path between the pure nickel wire and other conductors. The reduction of the conductive path will cause the flow of electric current in the pure nickel wire to be restricted, thereby reducing the conductive performance.
Increased interface resistance: There is usually a certain contact resistance at the interface between the oxide layer and pure nickel. Contact impedance is the resistance encountered when current flows across an interface and can cause difficulties in current transmission. Therefore, the presence of the oxide layer will increase the contact resistance between pure nickel wire and other conductors, further affecting the conductive performance.
It should be noted that the degree of influence of the oxide layer on the conductive properties of pure nickel wire depends on the thickness and quality of the oxide layer. A thin, uniform oxide layer has relatively little impact on conductive properties, while a thicker or uneven oxide layer may cause a larger increase in resistance and a decrease in conductive properties.
| Specifications | Values |
|---|---|
| Product name | Pure Nickel Wire |
| Ni(min) | 99% |
| Grade | N4,N6,Ni200,Ni201 |
| Size | 0.025-10mm |
| Shape | Wire |
| Hardness | S,1/4H,1/2H,3/4H,H |
| Melting Point | 1435-1446°C |
| Elongation (≥ %) | 35% |
| Resistance (μΩ.m) | 15 |
| Application | Industry,Electronic |
Our Nickel Wire is packaged and shipped with utmost care to ensure its safe and secure delivery to our customers.
Packaging:
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At Nickel Wire, we strive to provide the best packaging and shipping services to ensure our customers receive their products in pristine condition and on time.
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What is the resistivity of pure nickel wire?
Pure nickel wire has a resistivity of approximately 6.84×10^-8 Ω·m and has good conductive properties in electronic and electrical applications.
How does pure nickel wire respond to temperature changes?
Pure nickel wire responds quickly to temperature changes and has a low temperature coefficient, making it suitable for applications requiring rapid heating or temperature control.
What is the surface finish of pure nickel wire?
Pure nickel wire is usually surface treated to have a high surface finish and smoothness.
