The sunscreen mechanism of titanium dioxide

The sunscreen mechanism of titanium dioxide

According to the different wavelengths, ultraviolet rays are divided into short-wave regions 190-280nm, medium-wave regions 280-320nm, and long-wave regions 320-400nm. Ult...
Preparation and application of amorphous boron

Preparation and application of amorphous boron

Amorphous boron is a kind of dark brown powder chemical products, usually used in metallurgical and aerospace fields....
The Main Structure and Matching of Single Row Cylindrical Roller Bearings

The Main Structure and Matching of Single Row Cylindrical Roller Bearings

Single-row tapered roller bearings are mainly used to bear radial and axial combined loads mainly radial load, is a very common type of bearing. Many people are not very c...

Application of aluminium nitride refractories

Industry71Days Ago (05-11)
Aluminium nitride is a compound of nitrogen and aluminium, the chemical formula is AIN, hexagonal crystal system. The colour is light blue or green. Mohs hardness 5. The t...