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Contents of this article
- The role of zinc in zinc-copper primary batteries
- The interaction between manganese and zinc
- The effect of zinc on cars >
- The role of metallic zinc
- Uses of electrosprayed zinc
- Main uses of zinc metal
1. The role of zinc in zinc-copper primary batteries
1. When the copper and zinc electrodes are immersed in dilute H2SO4 together, since zinc is more active than copper, it is easy to lose electrons. , zinc is oxidized into Zn2+ and enters the solution. The electrons flow from the zinc sheet to the copper sheet through the wire. The H+ in the solution obtains electrons from the copper sheet and is reduced to hydrogen atoms. The hydrogen atoms combine into hydrogen molecules and are released from the copper sheet. The following reaction occurs at the two poles:
2. Positive electrode: 2H++2e=H2 (gas) (copper sulfate solution is the electrolyte solution
2. Interaction between manganese and zinc
In the metal activity sequence, Mn ranks second In front of Zn, the more negative Mn2++2?e?Mn(s)?1.185Zn2++2?e?Zn(s)?0.7618 is, the more active it is. When comparing metallicity, the first ionization energy of Zn is 906.4 kJ/mol, Mn is 717.3kJ/mol, indicating that the energy absorbed by ionized electrons Mn is lower than Zn, so metallic Mn is stronger than Zn. In summary, Mn is more active than Zn.
3. The role of zinc on automobiles
1. Galvanizing has excellent resistance to atmospheric corrosion. A protective film is easily formed on the surface at room temperature, so the biggest use of zinc is in the galvanizing industry. It is mainly used for surface coating of steel and steel structural parts, and is widely used in automobiles, construction, shipbuilding, light industry and other industries.
2. Zinc alloy is used in automobile manufacturing and machinery industry, mainly die castings, and is used in parts of automobiles, construction, some electrical equipment, household appliances, toys, etc. Production.
4. The role of metallic zinc
Galvanizing has excellent It is resistant to atmospheric corrosion and can easily form a protective film on the surface at room temperature. After the 21st century, the amount of hot-dip galvanizing of steel strips has increased significantly.
Electro-galvanizing is also used, but this method is generally used for thinner coatings and different surface finishes. The use of coatings containing zinc powder is another method of coating; for objects that are in continuous contact with water, such as large steel components used in ships, bridges and offshore oil and gas derricks, they only need to be connected to large zinc blocks. are protected, but the zinc blocks need to be replaced regularly.
Zinc has suitable mechanical properties. The strength and hardness of zinc itself are not high, but after adding aluminum, copper and other alloying elements, its strength and hardness are greatly improved.
Mainly die castings, used in the production of parts for automobiles, construction, some electrical equipment, household appliances, toys, etc. Many zinc alloys have excellent processing properties, and the pass processing rate can reach 60%-80%. It has excellent medium pressure performance, can be used for deep drawing, and has self-lubricating properties, extending the life of the mold.
Zinc, as the negative active material, also serves as the battery container and negative electrode conductor. It is the main material that determines the battery storage performance. Zinc-air battery, also known as zinc-oxygen battery, is a type of metal-air battery. The theoretical specific energy value of zinc-air batteries is 1350W·h/kg. The latest battery specific energy has reached 230Wh/kg, which is almost 8 times that of lead-acid batteries.
Zinc has good resistance to electromagnetic fields. The conductivity of zinc is 29% that of standard electrical copper, in the case of radio frequency interference.
5. Uses of electrosprayed zinc
1. Electrosprayed zinc It is a commonly used anti-corrosion coating material, mainly used for anti-corrosion protection of metal surfaces. It has excellent corrosion resistance and can effectively prevent metal materials from being affected by oxidation, corrosion and wear.
2. Electrosprayed zinc is widely used in construction, bridges, ships, oil and gas pipelines, power equipment and other fields, and can extend the length of metal materials.extend the service life of the material and improve its durability and reliability.
3. In addition, electrosprayed zinc can also be used to make decorations, furniture, auto parts, etc., giving them corrosion resistance and aesthetics. In short, electrosprayed zinc has broad application prospects in industry and daily life.
6. Main uses of zinc metal
Galvanizing has excellent Excellent atmospheric corrosion resistance, and a protective film is easily formed on the surface at room temperature. After the 21st century, the amount of hot-dip galvanizing of steel strips has increased significantly.
Electro-galvanizing is also used, but this method is generally used for thinner coatings and different surface finishes. The use of coatings containing zinc powder is another method of coating; for objects that are in continuous contact with water, such as large steel components used in ships, bridges and offshore oil and gas derricks, they only need to be connected to large zinc blocks. are protected, but the zinc blocks need to be replaced regularly.
Zinc has suitable mechanical properties. The strength and hardness of zinc itself are not high, but after adding aluminum, copper and other alloying elements, its strength and hardness are greatly improved.
Mainly die castings, used in the production of parts for automobiles, construction, some electrical equipment, household appliances, toys, etc. Many zinc alloys have excellent processing properties, and the pass processing rate can reach 60%-80%. It has excellent medium pressure performance, can be used for deep drawing, and has self-lubricating properties, extending the life of the mold.
Zinc, as the negative active material, also serves as the battery container and negative electrode conductor. It is the main material that determines the battery storage performance. Zinc-air battery, also known as zinc-oxygen battery, is a type of metal-air battery. The theoretical specific energy value of zinc-air batteries is 1350W·h/kg. The latest battery specific energy has reached 230Wh/kg, which is almost 8 times that of lead-acid batteries.
Zinc has good resistance to electromagnetic fields. The conductivity of zinc is 29% that of standard electrical copper, in the case of radio frequency interference.
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