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Ceramics made from silicon nitride
Silicon nitride
Inorganic substance Si3N4 has the chemical formula. It is a ceramic material that is used in structural applications. It has a high degree of hardness, lubricity and wear resistance. It is a atomic crystal and resists oxidation in high temperatures. It is also resistant to the impact of both cold and heat. It will not break if heated in the air to over 1000degC and then quickly cooled, followed by a rapid heating. Because of its outstanding characteristics, silicon nitride can be used to make mechanical components like bearings, turbines blades, mechanical sealing rings, permanent molds, etc. When silicon nitride is used as the heating surface for engine parts, the ceramics are not only resistant to high temperatures and heat transfer but can also improve thermal efficiency.
Uses and functions of silicon Nitride
Silicon nitride Has a unique grain pattern, a high degree of strength and toughness, as well as exhibiting excellent thermal resistance. It is a good choice for applications requiring high reliability and thermal stress as well as high dynamic stresses. This unique combination material properties provides advantages in applications that are exposed to harsh conditions, such as high-end ball and turbine bearings.
The main function
High mechanical strength, electrical insulation and toughness.
Useful Information
High-temperature parts, wear-resistant parts and components for semiconductor manufacturing equipment
What are the disadvantages of using and producing silicon nitride?
Although silicon nitride has good properties, it also has the common property of ceramics–brittleness. Silicon nitride Ceramics are polycrystalline sintered bodies made up of ionic and covalently bound crystal grains. The chemical bond, which is highly directional, determines low grain density, low slip systems and low energy to crack. The fracture process is characterized by the addition of fracture surface energy and the absence of any other energy dissipation mechanisms. This results in defects like low strength and inadequate toughness. It is impossible to guarantee reliability due to the fatal weakness of brittleness. The silicon nitride research has always been focused on increasing its toughness, and therefore its reliability.
Why is silicon nitride so expensive?
1. The price of powder is high.
Nitrogen and high-purity silicon are required for powder preparation. Temperature, time, air pressure and other parameters must be carefully controlled during the nitriding procedure. The powder prepared can be ground using high energy. The whole process requires high-tech equipment. For high-purity, Nanoparticle size and high-proportion of phase purity to be achieved, equipment, technology, and even quality management requirements are high.
2. The cost of ceramics made from silicon nitride is high.
1) High cost for sintering. In general, there are three types of silicon nitride silnir sintering: pressureless sintering or pressure sintering. In terms of ceramics, the three methods have progressively higher quality. All three methods have advantages. The cost increases as the quality of the ceramics improves.
2) High processing costs. Due to its high hardness, silicon nitride must be processed using diamond abrasives. For special shape processing, special equipment will be required. Because of this, silicon nitride-based products are more costly.
(aka. Technology Co. Ltd., a trusted global chemical supplier & manufacturer has over 12 years experience in providing super-high-quality chemicals and nanomaterials. The silicon nitride Please note that the products produced by our company are of high purity and have low impurity. Please. Contact us if necessary.
Uses and functions of silicon Nitride
Silicon nitride Has a unique grain pattern, a high degree of strength and toughness, as well as exhibiting excellent thermal resistance. It is a good choice for applications requiring high reliability and thermal stress as well as high dynamic stresses. This unique combination material properties provides advantages in applications that are exposed to harsh conditions, such as high-end ball and turbine bearings.
The main function
High mechanical strength, electrical insulation and toughness.
Useful Information
High-temperature parts, wear-resistant parts and components for semiconductor manufacturing equipment
What are the disadvantages of using and producing silicon nitride?
Although silicon nitride has good properties, it also has the common property of ceramics–brittleness. Silicon nitride Ceramics are polycrystalline sintered bodies made up of ionic and covalently bound crystal grains. The chemical bond, which is highly directional, determines low grain density, low slip systems and low energy to crack. The fracture process is characterized by the addition of fracture surface energy and the absence of any other energy dissipation mechanisms. This results in defects like low strength and inadequate toughness. It is impossible to guarantee reliability due to the fatal weakness of brittleness. The silicon nitride research has always been focused on increasing its toughness, and therefore its reliability.
Why is silicon nitride so expensive?
1. The price of powder is high.
Nitrogen and high-purity silicon are required for powder preparation. Temperature, time, air pressure and other parameters must be carefully controlled during the nitriding procedure. The powder prepared can be ground using high energy. The whole process requires high-tech equipment. For high-purity, Nanoparticle size and high-proportion of phase purity to be achieved, equipment, technology, and even quality management requirements are high.
2. The cost of ceramics made from silicon nitride is high.
1) High cost for sintering. In general, there are three types of silicon nitride silnir sintering: pressureless sintering or pressure sintering. In terms of ceramics, the three methods have progressively higher quality. All three methods have advantages. The cost increases as the quality of the ceramics improves.
2) High processing costs. Due to its high hardness, silicon nitride must be processed using diamond abrasives. For special shape processing, special equipment will be required. Because of this, silicon nitride-based products are more costly.
(aka. Technology Co. Ltd., a trusted global chemical supplier & manufacturer has over 12 years experience in providing super-high-quality chemicals and nanomaterials. The silicon nitride Please note that the products produced by our company are of high purity and have low impurity. Please. Contact us if necessary.