Explanation
silicon nitride ceramics is an inorganic materials ceramics that does not shrink during sintering. silicon nitride has high strength, especially hot pressing silicon nitride, which is one of the hardest materials in the world. It has properties such as high strength, low density, and high temperature resistance. Si3N4 ceramics is a covalent bond compound. The basic structural unit is the [SiN4] tetrahedron. The silicon atom is located in the center of the tetrahedron, and there are four nitrogen atoms around it, respectively located at the four vertices of the tetrahedron. Then, in the form that every three tetrahedrons share one atom, a continuous and solid network structure is formed in the three-dimensional space.
Classification
Inorganic non-metallic materials -> Advanced ceramics -> Structural ceramics