NR0220 Micro Silicon Nitride (α-Si3N4) Powder (CAS No. 12033-89-5)

Microsilicon Nitride (α-Si3N4) Powder Description

Microsilicon Nitride (α-Si3N4) (CAS: 12033-89-5) is a dense, high-strength and high-toughness ceramic material developed by scientists in the 1970s. Silicon nitride is utilised in various industrial applications, such as engine components, bearings and cutting tools. It demonstrates improved high-temperature performance compared to most metals, maintaining stable strength while resisting creep and oxidation. In addition, owing to its low coefficient of thermal expansion relative to most ceramic materials, it withstands cyclic thermal conditions.

Microsilicon Nitride (α-Si3N4) Powder Properties

Alpha (α-Si3N4) and Beta (β-Si3N4) silicon nitride represent two distinct crystal structures of silicon nitride.

α-Si3N4 is recognised for its resistance to thermal cycling and its electrical insulating properties.

1. Hexagonal crystal structure: α-Si3N4 possesses a hexagonal crystal structure, resulting in anisotropic properties. Consequently, its characteristics vary with the crystallographic direction.

2. Stable form at lower temperatures: This form of silicon nitride remains stable at lower temperatures, typically below 1 200 °C.

3. Thermal cycling resistance: α-Si3N4 develops a self-healing silicon dioxide layer when exposed to oxygen at high temperatures, thereby providing resistance to thermal cycling.

4. Electrical insulator: It functions as an electrical insulator.

Microsilicon Nitride (α-Si3N4) Powder Specifications

Microsilicon Nitride (α-Si3N4) Powder Applications

1. Cutting Tools: It is employed in the production of cutting tools because its wear resistance and high-temperature stability satisfy industrial requirements.
2. Bearings: It is used in high-performance bearings, particularly in high-speed and high-temperature environments.
3. Automotive Components: It is utilised in engine components, such as turbochargers and AGR systems, given its thermal stability and low mass.
4. Aerospace: It is applied in aerospace components that require high temperature resistance and light weight.
5. Electronic Components: It is incorporated as an insulator or substrate in high-performance electronic devices owing to its electrical insulation properties.

Microsilicon Nitride (α-Si3N4) Powder Packaging

Our Microsilicon Nitride (α-Si3N4) is carefully managed during storage and transport to maintain the product’s original quality.