What role does nanomagnesium oxide play in the ceramic field?

Nano magnesium oxide is a fairly common alkaline oxide. Due to its high melting point of 2800 ℃ and some special and excellent properties, magnesium oxide can enter the field of electronic ceramics. In terms of application

Nano magnesium oxide is a fairly common alkaline oxide. Due to its high melting point of 2800 ℃ and some special and excellent properties, magnesium oxide can enter the field of electronic ceramics. In terms of application, it can be divided into two ways: directly sintering into ceramics and using it as a sintering aid for other ceramics. Next, the editor from magnesium oxide manufacturers will introduce it to you.

1、 Directly sintered into ceramics

Nano magnesium oxide is an excellent ceramic raw material. Due to its good heat resistance and strong corrosion resistance to alkaline metal solutions, magnesium oxide ceramics are often suitable for high-temperature environments. It can be used as a crucible for smelting metals, and is also suitable for smelting high-purity uranium and thorium in the atomic energy industry. It can also be used as a thermocouple protective sleeve. Because it has the property of allowing electromagnetic waves to pass through, it can be used as a radar cover and a projection window material for infrared radiation. At the same time, it is also a raw material for piezoelectric and superconducting materials, and is environmentally friendly with good lead corrosion resistance. It can also be used as a ceramic sintering carrier, especially for β- Sintering protection of ceramic products with corrosive and volatile substances such as Al2O3 at high temperatures.

2、 Used as sintering aids for other ceramics

In addition, nano magnesium oxide can also be added in the preparation process of other ceramics, which has a good effect on reducing the glass transition temperature, lowering the sintering temperature, and improving the optical and mechanical properties of ceramics, thereby helping us obtain higher quality ceramic materials.

For example, silicon nitride ceramics have become one of the most promising high-temperature structural materials due to their excellent high-temperature strength, thermal shock resistance, and chemical stability. However, their strong covalent bonds and low diffusion coefficient make it difficult to sinter and densify. However, the addition of magnesium oxide can react with the silica on the surface of silicon nitride powder during the sintering process to form a silicate liquid phase, which can effectively promote the sintering of silicon nitride ceramics. At present, MgO-Y2O3 composite sintering aids are generally used to achieve atmospheric pressure sintering of silicon nitride ceramics.

In summary, nano magnesium oxide plays a crucial role in the field of ceramics. It can be used as a basic material and additive to improve the performance and function of ceramics, thereby promoting the progress and development of the ceramic industry.