English 
German 
French 
Spanish Silicon Nitride Structural Components
Silicon Nitride Structural Components
Purity: ≥99%
Silicon Nitride Structural Components are precision ceramic parts made from Si₃N₄, designed with complex shapes and multiple holes for mechanical integration or fluid/gas passage. These components offer exceptional thermal stability, high mechanical strength, and precise dimensional accuracy, making them ideal for high-temperature applications, semiconductor equipment, and fluid control systems. The design ensures excellent compatibility with other parts, ensuring reliable system performance. We can supply high-quality silicon nitride structural components with various specifications and competitive prices, offering customized solutions to meet specific requirements.
Or email us at sales@heegermaterials.com.Silicon Nitride Structural Components Data Sheet
| Reference Code: | HM2569 |
| Purity: | ≥99% |
| Color: | Black |
| Chemical Formula: | Si3N4 |
| Material Grades: | HMSN1000, HMSN2000, HMSN3000, HMSN4000 |
| Density: | 3.20 g/cm3 |
| Dimension: | customized |
Silicon Nitride Structural Components Description
Silicon Nitride Structural Components are precision-engineered ceramic parts made from high-quality Si₃N₄ material, known for its exceptional durability and heat resistance. These components are designed with precise geometric shapes and strategically placed holes, allowing for effective integration into complex systems. Their ability to withstand temperatures up to 1200°C makes them ideal for high-performance applications in industries like aerospace, semiconductor manufacturing, and automotive. The material’s high strength, wear resistance, and resistance to chemical corrosion ensure long-lasting performance in demanding environments. These structural components are perfect for applications that require reliable, heat-resistant, and mechanically robust solutions.
Silicon Nitride Structural Components Features
- High Strength and Durability: Silicon nitride structural components offer exceptional mechanical strength, making them suitable for applications requiring high load-bearing capabilities and resistance to impact.
- Excellent Thermal Stability: Silicon nitride structural components are capable of maintaining their properties in high-temperature environments, withstanding temperatures up to 1200°C, making them ideal for use in furnaces and aerospace systems.
- Wear and Abrasion Resistance: Silicon Nitride structural components are known for their high hardness, providing superior resistance to wear and abrasion, extending the life of the components even in tough, high-friction environments.
- Chemical Resistance: Highly resistant to corrosion, silicon nitride structural components can withstand exposure to a wide range of chemicals, including acids, alkalis, and other corrosive substances, ensuring long-term reliability.
- Low Thermal Expansion: Silicon Nitride has a low coefficient of thermal expansion, which helps minimize the risk of thermal shock, making it suitable for applications involving rapid temperature changes.
Silicon Nitride Structural Components Applications
- Aerospace Industry: Used in components that endure extreme heat and pressure, such as engine housings and thermal shielding systems, ensuring performance under harsh flight conditions.
- Automotive Engineering: Applied in engine mounts, exhaust systems, and EGR components to improve thermal efficiency and reduce emissions in high-performance vehicles.
- Electronics and Semiconductors: Serve as insulating mounts, circuit support structures, and heat dissipation elements where high precision and stability are crucial.
- Industrial Machinery: Used in equipment exposed to high wear and chemical exposure, such as pumps, bearings, and process equipment, enhancing operational reliability.
- Energy Sector: Found in high-temperature fuel cells and power generation systems, where long-term thermal and mechanical stability are essential.
Silicon Nitride Material Properties
Silicon Nitride Material Grades
HMSN1000 is produced through a gas over-pressure sintering technique, which is widely recognized for enabling the manufacture of high-strength silicon nitride parts with intricate shapes. The process starts with a silicon nitride powder blend that includes sintering additives—such as yttria, magnesium oxide, or alumina—to create a liquid phase during sintering, as well as binders to enhance the structural integrity of the pre-sintered form. After shaping the powder into the desired geometry and performing any necessary green machining, the components are densified in a nitrogen-pressurized furnace. This environment ensures proper consolidation while minimizing material loss due to evaporation or decomposition of silicon, nitrogen, and the additive elements.
Common Uses
- Components for aerospace systems
- Rolling and sliding elements in bearing units
- High-durability parts for internal combustion engines
- Tools and accessories for casting and metal processing
- Structural parts in mechanical assemblies
- Biocompatible elements for medical devices
HMSN2000 is manufactured using a hot pressing technique, where silicon nitride powder is compacted under high pressure and elevated temperature simultaneously. This method relies on specialized equipment, including precision dies and uniaxial presses. The result is a dense ceramic with outstanding strength and durability. However, the process is best suited for forming basic geometries due to the limitations of the equipment. Since components cannot be machined in the pre-sintered (green) state, all post-processing must be done through diamond grinding, which is both time-consuming and costly. As a result, this method is generally reserved for small-scale production of straightforward parts where premium material performance is required.
Common Uses
- Structural parts in aircraft and spacecraft systems
- Equipment and piping components in chemical processing industries
- Friction-resistant elements for engines
- Tools and wear parts used in metal casting environments
- Load-bearing and precision parts in industrial machinery
- Specialized pieces in medical and dental instruments
HMSN3000 utilizes the Hot Isostatic Pressing (HIP) process, where silicon nitride powder is compacted under both high pressure and high temperature. The material is placed in a chamber that is pressurized with inert gas, subjecting the component to uniform pressure from all sides at up to 2000 bar while it is simultaneously heated. This method helps to remove any residual porosity or defects during the sintering process, resulting in a material with a density close to its theoretical maximum. While HIP significantly improves the mechanical properties, durability, and overall reliability of the material, the high cost and complexity of the process limit its use to highly specialized applications.
Common Uses
- Components for aerospace and defense industries
- Precision bearing applications, especially in high-performance environments
- Equipment and components in chemical processing and industrial plants
- Engine parts subjected to extreme wear and thermal stress
- Foundry tools and wear-resistant components
- High-performance parts for mechanical engineering systems
- Medical components requiring high strength and biocompatibility
HMSN4000 is produced through an extruded gas over-pressure sintering process, where silicon nitride powder is blended with sintering additives, such as yttria, magnesium oxide, and/or alumina, to facilitate liquid-phase sintering. Additionally, binders are incorporated to enhance the mechanical properties of the green ceramic structure. The extrusion process helps form the material into the desired shape, and the parts are then subjected to gas over-pressure sintering in a controlled environment. This method ensures uniform density and superior mechanical performance, making it ideal for high-performance applications.
Common Uses
- Aerospace industry components
- Bearings used in high-performance machinery
- Equipment for chemical plants and industrial processing
- Wear-resistant parts for engines
- Components used in foundry operations
- Parts for mechanical engineering systems
- Medical-grade components for high-precision instruments
Silicon Nitride Ceramic Machining
Silicon nitride can be machined in green, biscuit, or fully sintered forms, each with different machining properties. In green or biscuit states, it is easier to shape into complex forms, but the material shrinks about 20% during sintering, affecting dimensional accuracy. For tight tolerances, fully sintered silicon nitride must be machined using diamond tools, a precise but costly process due to the material’s hardness and toughness.
Machining Methods and Considerations:
- Green or Biscuit Machining: Easier to machine into complex shapes but lacks final dimensional accuracy.
- Sintering Shrinkage: The material shrinks approximately 20% during the sintering process, affecting post-sintering dimensions.
- Tight Tolerances: For precise dimensions, post-sintered material must be machined using diamond tools.
- Diamond Grinding: This technique involves the use of diamond-coated tools or wheels to abrade the material and achieve the desired shape.
- Cost and Time: Machining fully dense silicon nitride is a slow, expensive process due to the hardness and toughness of the material.
Silicon Nitride Ceramic Packaging
Silicon nitride ceramic products are typically packaged in vacuum-sealed bags to prevent moisture or contamination and wrapped with foam to cushion vibrations and impacts during transport, ensuring the quality of products in their original condition.
Download
Get A Quote
We will check and get back to you in 24 hours.
