Nickel is a versatile and widely used transition metal with excellent corrosion resistance, high strength, and good ductility. Its applications range from stainless steel and aerospace alloys to batteries and chemical equipment. Understanding nickel’s properties, types, and industrial uses is essential for materials science, engineering, and manufacturing industries.
Basic Information
What is Nickel?
Nickel (Ni) is a silvery-white transition metal, atomic number 28, located in Group 10 of the periodic table. It has excellent ductility, toughness, and corrosion resistance, making it an important industrial and chemical material.
Another term for Nickel
Sometimes referred to as Ni element or nickel metal.
Is Nickel a metal?
Yes, nickel is a typical metal with metallic luster, good electrical conductivity, and thermal conductivity.
Is Nickel a transition metal?
Yes, it belongs to the transition metals group, along with iron and cobalt, and readily forms various compounds.
History and Sources
History of Nickel
Nickel was first discovered in 1751 by Swedish chemist Axel Fredrik Cronstedt.
Initially used for coins due to its corrosion resistance and workability.
Nickel sources
Naturally occurs mainly in ores such as nickel arsenide (NiAs), nickel sulfide, and nickel-iron ores.
Small amounts of native nickel exist, but most industrial nickel is extracted from ores.
How is Nickel produced?
- Mining: Extracting nickel ores.
- Ore processing: Crushing, screening, and concentration.
- Smelting: High-temperature melting to extract nickel from ore.
- Refining: Electrolytic or chemical refining to obtain high-purity nickel.
- Forming: Producing rods, plates, tubes, powders, or alloys.
Appearance and Physical/Chemical Properties
Appearance
Silvery-white metal with metallic luster
Hard and ductile, can be forged into rods, plates, or tubes
Color
Silvery-white with metallic shine
Physical properties
| Property | Value |
| Density | 8.908 g/cm³ |
| Melting point | 1455 °C |
| Boiling point | 2913 °C |
| Ductility | Good; can be drawn and forged |
| Magnetism | Ferromagnetic at room temperature |
| Electrical conductivity | Moderate |
Chemical properties
- Stable in air due to protective oxide layer
- Reacts with acids to form soluble nickel salts
- Forms compounds with oxygen, sulfur, chlorine, etc.
- Can form alloys to enhance corrosion and high-temperature resistance
Types of Nickel
- Pure Nickel (Electrolytic Nickel)
- Nickel Alloys (e.g., Inconel, Monel, Hastelloy)
- Nickel powders and nickel coatings
Applications and Functions
Uses of Nickel
- Stainless steel and corrosion-resistant alloys (e.g., 304, 316L, 2205 duplex stainless steel)
- Chemical industry: Equipment and piping resistant to acids and alkalis
- Electronics and electrical: Batteries (NiMH, NiCd), electronic components
- Coins and decorative items
- Aerospace and energy: High-temperature alloy components
Common commercial forms
- Metal rods, plates, tubes, foils
- Nickel powders and granules
- Nickel alloy rods, plates, tubes, and flanges
Advantages and Disadvantages
Advantages
- Excellent corrosion and oxidation resistance
- Good mechanical strength and toughness
- High ductility and workability
- Forms strong alloys with other metals
- Can be used long-term in high-temperature environments
Disadvantages
- Relatively expensive
- Can cause allergic reactions in some individuals
- Still susceptible to corrosion in strong oxidizing acids
Is nickel rustproof?
Nickel is highly corrosion-resistant, but may oxidize in strong oxidizing or acidic environments.
Can nickel be welded?
Yes, using TIG or MIG welding; heat input should be controlled to prevent grain growth.
Comparison with Other Metals
Nickel vs Nickel Alloys
- Nickel: Single-element metal
- Nickel alloys: Nickel combined with copper, iron, chromium, molybdenum, etc., to improve corrosion, temperature, or wear resistance
Nickel vs Aluminum
| Property | Nickel | Aluminum |
| Density | High (8.9 g/cm³) | Low (2.7 g/cm³) |
| Melting point | High (1455 °C) | Low (660 °C) |
| Thermal/Electrical conductivity | Moderate | High |
| Corrosion resistance | Strong | Moderate; prone to oxidation |
| Cost | High | Low |
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