Silicon nitride
silicon nitride
CAS: 12033-60-2
Molecular Formula: NSi
Silicon nitride - Names and Identifiers
| Name | silicon nitride |
| Synonyms | 12033-60-2 silicon nitride Silicon mononitride |
| CAS | 12033-60-2 |
| EINECS | 234-787-9 |
Silicon nitride - Physico-chemical Properties
| Molecular Formula | NSi |
| Molar Mass | 42.09 |
Silicon nitride - Introduction
silicon nitride is a compound of silicon and nitrogen with the formula Si3N4. It has the following properties:
1. Physical properties: silicon nitride is usually gray or dark brown crystals, with high hardness and density. It has high resistance to thermal and mechanical stress, good wear resistance and corrosion resistance.
2. Thermal properties: silicon nitride has high thermal conductivity and thermal stability, and can withstand high temperature environments, so it is widely used in the manufacture of high-temperature materials and devices.
3. Electrical properties: silicon nitride is a good insulator with high breakdown voltage and dielectric constant, so it can be used as an insulating layer or insulating substrate in electronic devices.
The main uses of the silica nitride are as follows:
1. Semiconductor materials: silicon nitride is widely used in the manufacture of high-performance semiconductor devices, such as high-power and high-frequency electronic devices.
2. Ceramic material: Because silicon nitride has excellent wear resistance and corrosion resistance, it can be used to manufacture ceramic parts and coating materials. It can also be used for components of high temperature stoves and industrial furnaces.
3. Biomedical Applications: silicon nitride has good biocompatibility and biodegradability, and can be used in the manufacture of medical instruments and biomedical materials.
The methods for preparing silicon nitride include thermal decomposition, thermal nitriding and chemical vapor deposition. Among them, chemical vapor deposition is a commonly used preparation method, which uses silicon source and nitrogen source to generate silicon nitride at high temperature through chemical reaction.
About the safety information of silicon nitride, it is stable and non-toxic at room temperature, but may produce harmful gases such as ammonia at high temperatures. Therefore, in the preparation of silica nitride and the use of silica nitride products, appropriate safety measures, including ventilation and the use of protective equipment, should be taken to protect the safety of operators.
1. Physical properties: silicon nitride is usually gray or dark brown crystals, with high hardness and density. It has high resistance to thermal and mechanical stress, good wear resistance and corrosion resistance.
2. Thermal properties: silicon nitride has high thermal conductivity and thermal stability, and can withstand high temperature environments, so it is widely used in the manufacture of high-temperature materials and devices.
3. Electrical properties: silicon nitride is a good insulator with high breakdown voltage and dielectric constant, so it can be used as an insulating layer or insulating substrate in electronic devices.
The main uses of the silica nitride are as follows:
1. Semiconductor materials: silicon nitride is widely used in the manufacture of high-performance semiconductor devices, such as high-power and high-frequency electronic devices.
2. Ceramic material: Because silicon nitride has excellent wear resistance and corrosion resistance, it can be used to manufacture ceramic parts and coating materials. It can also be used for components of high temperature stoves and industrial furnaces.
3. Biomedical Applications: silicon nitride has good biocompatibility and biodegradability, and can be used in the manufacture of medical instruments and biomedical materials.
The methods for preparing silicon nitride include thermal decomposition, thermal nitriding and chemical vapor deposition. Among them, chemical vapor deposition is a commonly used preparation method, which uses silicon source and nitrogen source to generate silicon nitride at high temperature through chemical reaction.
About the safety information of silicon nitride, it is stable and non-toxic at room temperature, but may produce harmful gases such as ammonia at high temperatures. Therefore, in the preparation of silica nitride and the use of silica nitride products, appropriate safety measures, including ventilation and the use of protective equipment, should be taken to protect the safety of operators.
Last Update：2024-04-10 22:29:15
