The characteristics of silicon nitride structural components are multiple holes and precise geometric shapes, which are used for fixation or as channels to allow fluids, gases, or wires to pass through, depending on their function in the system.
Brief
The characteristics of silicon nitride structural components are multiple holes and precise geometric shapes, which are used for fixation or as channels to allow fluids, gases, or wires to pass through, depending on their function in the system.
Details
1. High strength and fracture toughness at high temperatures
Silicon nitride exhibits high strength and excellent fracture toughness at high temperatures, making it an ideal choice for many high-temperature applications.
Automotive engine components: Silicon nitride is widely used in high-temperature structural components of automotive engines, such as piston rings, turbine blades, and fuel injectors. Its high strength and wear resistance enable these components to work stably in high temperature, high pressure, and harsh environments, improving the efficiency and reliability of the engine.
Gas turbine and combustion chamber components: Silicon nitride is also widely used as gas turbine and combustion chamber components, such as turbine bearings, combustion chamber liners, and nozzles. Its high temperature strength and corrosion resistance enable these components to operate stably for a long time in high-temperature and high-pressure environments, improving the performance and lifespan of the equipment.
2. Low thermal expansion coefficient and extremely high heat shock resistance
Silicon nitride has a low coefficient of thermal expansion and extremely high heat shock resistance, making it perform well in high-temperature environments.
Low thermal expansion coefficient: The low thermal expansion coefficient of silicon nitride means that its ability to deform at high temperatures is relatively small, making it particularly suitable for high-temperature applications that require stable size and shape, such as high-temperature furnaces and heat treatment equipment.
Extremely high heat shock resistance: Silicon nitride exhibits extremely high heat shock resistance, which means it can maintain its strength and integrity even under rapid temperature changes. This makes it very useful in applications that require frequent temperature cycling, such as thermocouples and spark plug insulators.
The structural features include multiple holes and precise geometric shapes, which can be used not only for fixation but also as channels to allow fluids, gases, or wires to pass through. This design ensures high precision and compatibility during assembly and operation, making it highly suitable for complex industrial applications.
The surface of the structural components is very smooth, which helps to reduce friction and wear, thereby improving wear resistance and extending service life. A smooth surface also helps to improve the overall efficiency and sealing performance of mechanical components.
The dark gray tone of silicon nitride not only demonstrates the high purity and uniformity of the material, but also reflects its enhanced physical properties through high-temperature sintering process. Silicon nitride materials are known for their high strength, high temperature resistance (up to 1200 ℃), wear resistance, and chemical corrosion resistance.
Parameter
| Item | gas pressure sintering | hot pressing sintering | reactive sintering | pressureless sintering |
| Rockwell hardness (HRA) | ≥75 | - | > 80 | 91-92 |
| volume density(g/cm3) | 3.25 | > 3.25 | 1.8-2.7 | 3.0-3.2 |
| Dielectric constant (εr20℃, 1MHz) | - | 8.0(1MHz) | - | - |
| electric volume resistivity(Ω.cm) | 10¹⁴ | 10⁸ | - | - |
| breaking tenacity (Mpa m1/2) | 6-9 | 6-8 | 2.8 | 5-6 |
| Elasticity modulus (GPa) | 300-320 | 300-320 | 160-200 | 290-320 |
| thermal expansivity (m/K *10⁻⁶/℃) | 3.1-3.3 | 3.4 | 2.53 | 600 |
| thermal conductivity (W/MK) | 15-20 | 34 | 15 | - |
| weibull modulus (m) | 12-15 | 15-20 | 15-20 | 10-18 |
Frosted Quartz Glass Flange for sealing or connecting components
Oil Paste Atomization Silicon Carbide Crucible Insulator SiC Ceramic Small Cup
CE RoHS Certificate air Treatment 220V 60g Quartz Tube Ozone Generator Module
Two Sides Clear 10mm Light Path Quartz Glass Cuvette
EN
