What is the difference between brown aluminum oxide and white aluminum oxide?

First, the basic characteristics of different colors of aluminum oxide

Aluminum oxide (Al2O3) is a kind of inorganic compounds, according to the nature of the material and the application requirements, alumina can be prepared into different colors of alumina materials such as white, brown, blue and so on through different preparation methods. At the same time, different colors of aluminum oxide also have different physical and chemical properties, such as.

1. white aluminum oxide: white aluminum oxide is used in the manufacture of ceramics, enamel and glass, etc. It can improve the strength and hardness of these products, and the high temperature stability of white aluminum oxide also makes it very suitable for use as high temperature materials. The properties of white aluminum oxide mainly include high hardness, high melting point, high heat resistance and high corrosion resistance.
2. Brown aluminum oxide: Brown aluminum oxide is commonly used in industrial applications such as abrasives, grinding and polishing. Compared to other colors of alumina, Brown aluminum oxide has higher hardness and better grinding properties. In addition, brown aluminum oxide has good corrosion resistance, high strength and high thermal conductivity.

Second, the application scenarios of different colors of aluminum oxide

Different colors of alumina contribute to the development of various industrial and scientific fields due to their special physical and chemical properties. For example.

1. white aluminum oxide: white aluminum oxide is widely used in the manufacture of glass, enamel, ceramics and other products. In addition, white aluminum oxide with good high-temperature stability can also be used in high-temperature ceramics and refractory materials.
2. Brown aluminum oxide: Brown aluminum oxide is widely used in the manufacture of abrasives and abrasive sheets and other industries, and can also be applied to surface treatment and anti-corrosion field.

Third, the preparation method of different colors of aluminum oxide

Different colors of alumina can be obtained through different methods of preparation.

1. white aluminum oxide: white aluminum oxide is usually prepared by reducing alumina powder and aluminum powder at high temperatures, or by using high-purity alumina.
2. Brown aluminum oxide: Brown aluminum oxide is prepared by high temperature arc discharge method or perspex fusion method. Among them, high-temperature arc discharge method uses ceramic molds at room temperature to mix alumina and charcoal in a certain proportion, and then undergoes arc discharge heat treatment; persimmon melting method mixes alumina and dilute caustic soda, and then under high-temperature conditions for melting treatment.

In summary, different colors of alumina have different properties and application scenarios, and their colors come from the differences in their preparation methods and physicochemical properties. In the field of industry and science and technology, people can choose the most suitable alumina materials according to the application requirements to achieve the best results.

Which is more commonly used, brown aluminum oxide or white aluminum oxide?

White aluminum oxide is more commonly used. White Aluminum Oxide is a purer form of Aluminum Oxide that is widely used in industrial and everyday applications. The main component of white aluminum oxide is aluminum oxide with the chemical formula Al2O3, which is a white amorphous powder that is not easily soluble in water. In addition, white aluminum oxide is used in a number of applications, including as a component of red gemstones and sapphires, as a protective layer for metallic aluminum, and in a variety of applications in industrial production.