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Silicon nitride ceramic is an advanced material known for its exceptional properties and wide range of applications. It is a type of ceramic composed primarily of silicon nitride (Si3N4), a compound of silicon and nitrogen.
High Strength: Silicon nitride ceramic exhibits remarkable strength and hardness, making it highly resistant to wear and tear. It is often used in demanding applications where durability is crucial.
High-Temperature Resistance: Silicon nitride ceramic possesses excellent thermal stability and can withstand extremely high temperatures, up to 1,400 degrees Celsius (2,552 degrees Fahrenheit) in certain grades. This property makes it suitable for high-temperature environments and applications.
Low Thermal Expansion: Silicon nitride ceramic has a low coefficient of thermal expansion, meaning it undergoes minimal dimensional changes with temperature fluctuations. This characteristic is crucial in applications requiring precise dimensional stability.
Corrosion Resistance: Silicon nitride ceramic is highly resistant to corrosion, making it suitable for use in harsh environments and exposure to chemicals.
Biocompatibility: Certain grades of silicon nitride ceramic are biocompatible, meaning they are safe for use in medical applications, such as surgical tools and implants.
Automotive: Silicon nitride ceramic is used in automotive components like turbochargers, engine parts, and brake discs due to its high-temperature resistance and wear resistance.
Aerospace: In the aerospace industry, silicon nitride ceramic is employed in components such as jet engine parts, heat shields, and structural components due to its high-temperature capabilities and strength.
Medical: Biocompatible grades of silicon nitride ceramic are used in medical devices, implants, and surgical instruments due to their biocompatibility and resistance to corrosion.
Electronics: Silicon nitride ceramic is utilized in electronic substrates, packaging, and high-frequency components due to its low thermal expansion and electrical insulation properties.
Industrial Machinery: Silicon nitride ceramic is used in various industrial machinery components, such as bearings, seals, and cutting tools, due to its wear resistance and high-temperature capabilities.
Properties Of Silicon Nitride
| Property | Item | Data | Unit |
Mechanical Characteristics | Color | Black/Grey | - |
| Density | 3.2 | g/cm3 | |
| Bending Strength | 750 | MPa | |
| Compressive Strength | 3800 | MPa | |
| Elastic Modulus | 290 | GPa | |
| Fracture Toughness | 7 | MPa m1/2 | |
| Weber Coefficient | 15 | m | |
| Vickers Hardness | 1700 | HV 0.5 | |
Thermal Characteristics | Coefficient of Line Thermal Expansion | 2 | 10-6 K-1 |
Thermal Conductivity | 20 | W/mK | |
Thermal Shock Resistance (Put in Water) | 750 | ΔT℃ | |
Max Working Temperature | 1300 | ℃ | |
Electrical Characteristics | Volume Resistance at 20℃ | >1014 | Ωcm |
Dielectric Strength | 10×106 | V/m | |
Dielectric Constant | - | εr | |
One MHZ Dielectric Loss Angle at 20℃ | - | tanδ | |
Chemical Characteristics | Nitric Acid(60%)90℃ | 1 | WT Loss mg/cm2/day |
Sulphuric Acid(95%)95℃ | ≒0.00 | ||
| Caustic Soda(30%)80℃ | 0.2 |
Silicon nitride ceramic is an advanced material known for its exceptional properties and wide range of applications. It is a type of ceramic composed primarily of silicon nitride (Si3N4), a compound of silicon and nitrogen.
High Strength: Silicon nitride ceramic exhibits remarkable strength and hardness, making it highly resistant to wear and tear. It is often used in demanding applications where durability is crucial.
High-Temperature Resistance: Silicon nitride ceramic possesses excellent thermal stability and can withstand extremely high temperatures, up to 1,400 degrees Celsius (2,552 degrees Fahrenheit) in certain grades. This property makes it suitable for high-temperature environments and applications.
Low Thermal Expansion: Silicon nitride ceramic has a low coefficient of thermal expansion, meaning it undergoes minimal dimensional changes with temperature fluctuations. This characteristic is crucial in applications requiring precise dimensional stability.
Corrosion Resistance: Silicon nitride ceramic is highly resistant to corrosion, making it suitable for use in harsh environments and exposure to chemicals.
Biocompatibility: Certain grades of silicon nitride ceramic are biocompatible, meaning they are safe for use in medical applications, such as surgical tools and implants.
Automotive: Silicon nitride ceramic is used in automotive components like turbochargers, engine parts, and brake discs due to its high-temperature resistance and wear resistance.
Aerospace: In the aerospace industry, silicon nitride ceramic is employed in components such as jet engine parts, heat shields, and structural components due to its high-temperature capabilities and strength.
Medical: Biocompatible grades of silicon nitride ceramic are used in medical devices, implants, and surgical instruments due to their biocompatibility and resistance to corrosion.
Electronics: Silicon nitride ceramic is utilized in electronic substrates, packaging, and high-frequency components due to its low thermal expansion and electrical insulation properties.
Industrial Machinery: Silicon nitride ceramic is used in various industrial machinery components, such as bearings, seals, and cutting tools, due to its wear resistance and high-temperature capabilities.
Properties Of Silicon Nitride
| Property | Item | Data | Unit |
Mechanical Characteristics | Color | Black/Grey | - |
| Density | 3.2 | g/cm3 | |
| Bending Strength | 750 | MPa | |
| Compressive Strength | 3800 | MPa | |
| Elastic Modulus | 290 | GPa | |
| Fracture Toughness | 7 | MPa m1/2 | |
| Weber Coefficient | 15 | m | |
| Vickers Hardness | 1700 | HV 0.5 | |
Thermal Characteristics | Coefficient of Line Thermal Expansion | 2 | 10-6 K-1 |
Thermal Conductivity | 20 | W/mK | |
Thermal Shock Resistance (Put in Water) | 750 | ΔT℃ | |
Max Working Temperature | 1300 | ℃ | |
Electrical Characteristics | Volume Resistance at 20℃ | >1014 | Ωcm |
Dielectric Strength | 10×106 | V/m | |
Dielectric Constant | - | εr | |
One MHZ Dielectric Loss Angle at 20℃ | - | tanδ | |
Chemical Characteristics | Nitric Acid(60%)90℃ | 1 | WT Loss mg/cm2/day |
Sulphuric Acid(95%)95℃ | ≒0.00 | ||
| Caustic Soda(30%)80℃ | 0.2 |
