Main characteristics of metal silicon powder
Silicon has two allotropes, amorphous silicon, and crystalline silicon. Amorphous silicon is a gray-black powder that is a microcrystalline substance. Crystalline silicon has diamond's crystal structure and semiconductor properties, with a melting point of 1410 ℃, a boiling end of 2355 ℃, a density of 2.32 to 2.34 g/cm3, a Mohs hardness of 7, and brittle nature. Chemical silicon refers to metallic silicon used in producing organic silicon and polysilicon. Worldwide, the consumption of metallurgical silicon is greater than that of chemical silicon. However, with the continuous development of science and technology, the use of chemical silicon in producing organic silicon and semiconductors continues to expand. It is widely used in making organic silicon monomer and polymer silicone oil, silicone rubber, silicone resin building anti-corrosion, waterproof agents, and other unique properties, such as high-temperature resistance, electrical insulation, radiation resistance, and waterproof and used in electrical, aviation, mechanical, chemical, pharmaceutical, national defense, construction, and other departments. As the core of integrated circuits, more than 95% of electronic components are made of semiconductor silicon, the backbone of the current information industry. Amorphous silicon has active chemical properties and can burn violently in oxygen. It reacts with nonmetals such as halogen, nitrogen, and carbon at high temperatures and can also react with metals such as magnesium, calcium, and iron to form silicides. Amorphous silicon is almost insoluble in all inorganic and organic acids, including hydrofluoric acid, but it is soluble in mixed acids of nitric acid and hydrofluoric acid. A concentrated sodium hydroxide solution can dissolve amorphous silicon and release hydrogen. Crystalline silicon is relatively inert and does not combine with oxygen, even at high temperatures. It is also insoluble in any inorganic or organic acid but is soluble in mixed acids of nitric acid, hydrofluoric acid, and concentrated sodium hydroxide solutions. If you are looking for high quality, high purity and cost-effective Silicon, or if you require the latest price of Silicon, please feel free to email contact mis-asia.