In the tide of modern industrial and technological development, there is a substance that seems ordinary but contains extraordinary energy – silicon metal powder. As an important basic material, it not only plays a key role in the semiconductor industry, but also shows its unique charm in many fields such as solar photovoltaic, metallurgy, and chemical industry.
Basic characteristics of silicon metal powder
Silicon metal powder has high purity and uniformity. Through high-temperature reduction of raw materials such as quartz sand, and a strict purification process, it can reach a purity of more than 99%. Its particle size distribution is uniform, which makes silicon metal powder highly adaptable and stable in subsequent processing.
Strong deoxidation performance: Silicon can react strongly with oxygen at high temperature and combine to form silicon dioxide (SiO₂). Taking advantage of this property, people often use Metallurgical grade silicon metal to reduce the oxygen content in molten steel. At the same time, silicon is a deoxidizer, which can not only deoxidize, but also improve the hardness and strength of steel. Silicon metal models used in the metallurgical field include silicon metal 553 and si metal 441, etc.
Good conductivity: Although silicon metal powder name contain “metal”, it is actually a non-metallic element. However, under certain conditions, especially by doping with other elements, silicon can show excellent semiconductor properties. This feature makes it a basic material for manufacturing electronic components, especially integrated circuits and semiconductor devices.
Heat and wear resistance: silicon metal powder has a high melting point and hardness, which enables it to maintain stable performance in extreme high temperature environments. Due to these excellent physical properties, it is quite useful in manufacturing structural parts or coatings in high temperature environments.
Chemical stability: metal silicon has strong resistance to most chemicals, especially in the face of strong acids, strong alkalis and fluorides. It shows extremely high chemical stability. This feature ensures that it can still function safely and for a long time in complex and harsh environments.
Production and application of silicon metal powder
The production of si metal powder usually includes industrial processing of si blocks to make different grades of silicon powder, such as coarse, fine-powder, microfine-powder, ultrafine-powder, etc. Common production methods include ball milling, roller milling and whirling. As the world’s leading producer of silicon metal powder, China has relatively large production capacity. Anyang Highrise Metal Material Co., Ltd. is located in Anyang, Henan, is a leading producer of 3N-6N Si-Powder. With advanced equipment, silicon powder with uniform particles can be produced without reducing the purity.
High-purity metallic silicon powder: the core of semiconductor and photovoltaic fields
Unlike ordinary metallurgical grade silicon, High Purity Silicon Metal Powder usually refers to those purity of more than 99.9%. It is made from polycrystallineor single crystal silicon by crushing and processing, and the purity can reach 3N-6N. That is 99.9%, 99.99% Si Powder, 99.999% or even higher. This high-purity silicon powder is the basic material for semiconductor manufacturing and integrated circuit production. Through petrochemical method or vapor deposition method, high-purity silicon powder can be converted into silicon single crystal. Further cut into wafers, and widely used in the manufacture of electronic components.
In addition to its key role in the semiconductor industry, high-purity silicon powder also plays an important role in the preparation of optoelectronic devices and solar cells. Its high purity and excellent electronic properties can effectively improve the efficiency and reliability of electronic devices. Besides, it can promote the continuous development of solar cells and photovoltaic technology.