High Purity Nickel
Overview
High-purity nickel material is a refined metal with minimal impurities (typically ≤0.01%), making it ideal for precision applications. It is produced through electrolytic refining or carbonyl processes to achieve purity levels up to 99.999% (5N). Nickel's versatility stems from its balanced properties: resistance to oxidation, magnetic characteristics below 353°C, and compatibility with alloys. Industries value it for reproducibility in high-tech manufacturing, where trace contaminants could compromise performance.
Physical and Chemical Properties
High-purity nickel exhibits a face-centered cubic (FCC) crystalline structure, contributing to its ductility and machinability. Its electrical resistivity is 6.99 μΩ·cm at 20°C, lower than most transition metals. Chemically, it forms a passive oxide layer in air, enhancing corrosion resistance. However, it dissolves slowly in non-oxidizing acids like hydrochloric acid. Unlike standard nickel, high-grade variants show minimal sulfur or carbon content, reducing embrittlement risks.
Main Applications
In aerospace, high-purity nickel is used for turbine blades and exhaust systems due to its creep resistance at high temperatures. The electronics industry relies on it for sputtering targets, semiconductor contacts, and battery electrodes. Other applications include catalysts for hydrogenation reactions, electroplating for decorative finishes, and superconducting alloys. Recent trends highlight its role in lithium-ion batteries and fuel cells, where purity affects energy efficiency.
Safety and Storage
Solid nickel poses low toxicity, but powder forms are flammable and may cause respiratory irritation. Store away from acids, peroxides, and moisture to prevent unwanted reactions. Use inert gas storage for powders. Regulations like OSHA PEL (1 mg/m³ for nickel metal) apply. Suppliers must provide SDS documentation, especially for nano-nickel powders, which require additional handling precautions.
B2B Procurement Guide
When sourcing high-purity nickel, prioritize suppliers with ISO 9001 certification and batch-specific assay reports. Key specifications include ASTM B160 (rod/bar), B162 (plate), or B366 (fittings). For cost efficiency, consider form factors: foil commands premium pricing, while pellets are economical for bulk chemical processes. Lead times may vary; secure contracts with price adjustment clauses to hedge against LME nickel market volatility.
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