How to pronounce the pinyin of nickel?

Nickel is a metallic element with symbol Ni and atomic number 28. It is a shiny silvery white metal with a density of 8.9g/cm3, a melting point of 1453℃ and a boiling point of 2732℃. Nickel has good ductility and magnetism. At room temperature, it can react with oxygen in the air to form an oxide film to prevent the internal nickel from being oxidized.

Nickel mainly exists in sulfide minerals in nature, such as nickel pyrite and silicon-magnesium-nickel ore. It is one of the most important non-ferrous metals, and is widely used in manufacturing various alloys, catalysts, electroplating, stainless steel, electronics industry, battery industry and other fields.

In industrial production, nickel is usually produced by reduction, electrolysis, carbonylation and other processes. Nickel is produced from sulfuric acid and iron by reduction method, metallic nickel is obtained from nickel salt by electrolytic reduction by electrolysis method, and nickel is synthesized from carbon monoxide and hydrogen by carbonylation method at high temperature and high pressure.

With the continuous progress of science and technology, the application field of nickel is also expanding. For example, in the field of new energy, nickel batteries have attracted much attention because of their high energy density and no memory effect. In addition, in the field of environmental protection, nickel catalyst is also used to treat harmful gases such as automobile exhaust.

The meaning of Chinese characters

1, Chinese characters are written symbols for recording Chinese. Chinese characters are the oldest symbol system still in use in the world.

2. Historically, Chinese characters have been borrowed by neighboring countries and nationalities to record different languages.

3. Chinese characters have played an extremely important historical role in safeguarding Chinese national unity, creating and prospering national economy and culture, consolidating and developing national unity and spreading Chinese traditional civilization to the outside world.