What are the properties of industrial aluminum and silicon?

The hot melting coefficient of aluminum is related to temperature. At low temperature (40k), it is directly proportional to the cubic temperature, and the range of 298k-900k conforms to the law C=a+b*T, tending to 25J/mol. C at high temperature. Please refer to the physical properties of inorganic materials for details.

Thermal conductivity of aluminum

Because aluminum is an inorganic substance, the thermal conductivity changes in a bell-shaped trend, the highest point is about 60 K, and when the temperature rises, it approaches a stable value. See Physical Properties of Inorganic Materials for details.

Metallic silicon, also known as crystalline silicon or industrial silicon, is mainly used as an additive for non-iron-based alloys. Metallic silicon is a product smelted with timely coke in an electric heating furnace. The main component silicon content is about 98% (in recent years, metallic silicon also contains 99.99% Si), and the rest impurities are iron, aluminum and calcium.

Silicon is widely used in smelting ferrosilicon alloy, as an alloying element in iron and steel industry and as a reducing agent in smelting many metals. Silicon is also a good component in aluminum alloys, and most cast aluminum alloys contain silicon. Silicon is the raw material of ultra-pure silicon in electronic industry. Electronic devices made of ultra-pure semiconductor monocrystalline silicon have the advantages of small volume, light weight, good reliability and long life. High-power transistors, rectifiers and solar cells made of silicon single crystal doped with specific trace impurities are better than those made of germanium single crystal.