Silicon Nitride (Si₃N₄) Ceramics

1.Key Advantages

• High flexural strength and elastic modulus for load-bearing structural use

• Low thermal expansion coefficient (~2.6 × 10⁻⁶/°C), supporting dimensional stability under thermal cycling

• Strong thermal-shock resistance (rated to approximately 800 °C ΔT class performance)

• Near-zero water absorption and dense microstructure for reliable sealing and cleanliness

• Good fracture toughness relative to many technical ceramics, improving damage tolerance

• High volume resistivity and electrical insulation capability for process and packaging environments

• Chemical resistance to common acids and alkaline media under specified test conditions

2.Typical Applications

Silicon nitride components from VeTek are used across semiconductor, power-electronics, and industrial high-temperature systems:

• Semiconductor process equipment fixtures, supports, and chamber-related hardware

• High-reliability ceramic substrates and structural parts for power modules (including Si₃N₄ AMB platforms)

• Precision shafts, rollers, bearings, and wear-resistant mechanical elements

• Welding, brazing, and induction-heating fixtures and nozzles

• Thermocouple protection tubes, heating-element supports, and high-temperature insulation parts

• Engine and industrial components requiring strength at elevated temperature and thermal-shock durability

3.Key Technical Parameters (Si₃N₄)

Typical properties of VeTek Silicon Nitride ceramic material are summarized below:

* Hardness value shown as typical for sintered Si₃N₄ grade; exact HV depends on microstructure and test load. Other properties are representative and may be adjusted by grade and process.

4.Available Product Forms

• Plates, blocks, and substrate blanks

• Rods, tubes, and shafts

• Rings, nozzles, and precision machined fixtures

• Custom geometries based on customer drawings (CNC finishing available)

5.Why Choose VeTek Silicon Nitride Ceramics?

VeTek Semiconductor focuses on high-performance ceramics and process components for semiconductor and power-electronics customers. For Si₃N₄, this means:

• Material grades selected for strength, thermal-shock capability, and chemical durability

• Precision machining and finishing to meet tight geometric and surface requirements

• Support for both standard shapes and fully custom parts for tool and module integration

• A broader advanced-ceramics portfolio including AlN, Al₂O₃, porous SiC, and related materials

Whether the requirement is a structural fixture in a semiconductor chamber or a high-reliability ceramic substrate platform, VeTek Silicon Nitride ceramics provide a balanced combination of mechanical strength, thermal stability, and process compatibility.