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0306
HaoRui
custom
Silicon nitride is considered a very important engineering ceramic due to its adaptability to many different forms, with each form having distinctive properties. At high temperature, silicon nitride shows excellent mechanical properties including low density, high bending strength, high elastic modulus and fracture toughness, and high abrasion wear, as well as solid particle erosion resistance. In other words, this material is extremely strong and extremely tough. The material also shows excellent thermal properties, with minimal expansion and contraction due to temperature and the ability to withstand thermal shock (fast, significant changes in temperature). Finally, silicon nitride possesses exceptional chemical properties including stability against most acids and bases, corrosive gases and liquid metals.
Silicon nitride is highly versatile and can be effectively utilized in some of the most demanding work environments worldwide, thanks to its unique combination of chemical and thermodynamic properties. When silicon nitride is hot pressed, it demonstrates exceptional performance at high temperatures, making it an ideal choice for seal face components that face challenging conditions. These conditions include pumps in boiler water reactors, pumps in pressurized water reactors, corrosive borated water service, and rotating bearings. Furthermore, pump components made of silicon nitride are extensively used in the oil and gas industry, as well as in the petrochemical sector as a whole. The chemical stability of Si3N4 makes it suitable for surfaces within pumps, such as impellers, shafts, and seals, that regularly come into contact with abrasive slurries and corrosive fluids.
| 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℃ | >10⒕ | 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 |
This data is the result of laboratory testing. Customers need to judge whether it can be used according to the specific environment.
For more customization details, Please contact us.
Silicon nitride is considered a very important engineering ceramic due to its adaptability to many different forms, with each form having distinctive properties. At high temperature, silicon nitride shows excellent mechanical properties including low density, high bending strength, high elastic modulus and fracture toughness, and high abrasion wear, as well as solid particle erosion resistance. In other words, this material is extremely strong and extremely tough. The material also shows excellent thermal properties, with minimal expansion and contraction due to temperature and the ability to withstand thermal shock (fast, significant changes in temperature). Finally, silicon nitride possesses exceptional chemical properties including stability against most acids and bases, corrosive gases and liquid metals.
Silicon nitride is highly versatile and can be effectively utilized in some of the most demanding work environments worldwide, thanks to its unique combination of chemical and thermodynamic properties. When silicon nitride is hot pressed, it demonstrates exceptional performance at high temperatures, making it an ideal choice for seal face components that face challenging conditions. These conditions include pumps in boiler water reactors, pumps in pressurized water reactors, corrosive borated water service, and rotating bearings. Furthermore, pump components made of silicon nitride are extensively used in the oil and gas industry, as well as in the petrochemical sector as a whole. The chemical stability of Si3N4 makes it suitable for surfaces within pumps, such as impellers, shafts, and seals, that regularly come into contact with abrasive slurries and corrosive fluids.
| 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℃ | >10⒕ | 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 |
This data is the result of laboratory testing. Customers need to judge whether it can be used according to the specific environment.
For more customization details, Please contact us.
