A Solution for Severe Environments

It is our belief that SINTX’s Industrial Silicon Nitride has the best combination of mechanical, thermal, and electrical properties of any technical ceramic material. It is a high-performance technical ceramic with high strength, toughness, and hardness, and is extremely resistant to thermal shock and impact. It is also an electrically insulating ceramic material30,31. Typically, it is used in applications where high load-bearing capacity, thermal stability, and wear resistance are required.

Aerospace Materials

The aerospace industry is continually changing, causing materials and applications to change as well. Velocity requirements have increased from Mach 3 to Mach 5 and higher 32,33,34. The aerospace materials used need to match this requirement.

Industrial Silicon Nitride is incredibly light for the strength it provides. This makes it an enabling ceramic in aerospace and other applications where both weight and strength are critically important. It is also creep-resistant (as compared to metals), which improves the stability of structures at high temperatures. This material has a great combination of additional properties including hardness, electromagnetic properties, and thermal resistance required for extreme applications such as radome, missile fin, and engine components 35.

Automotive Ceramics

Owing to its excellent thermal shock resistance compared to other ceramics in the automotive industry 36, Industrial Silicon Nitride is a very useful material for the fabrication of high-performance all-ceramic or hybrid steel-ceramic rolling contact bearings37. The material’s extreme strength, toughness, and resistance to chemical and thermal factors offer significant benefits by extending contact fatigue life.

As a low-density material, silicon nitride can greatly reduce the dynamic loading during ball contacts in very high-speed applications such as those in gas turbine engines. The material also has notable applications in severe lubrication and wear conditions including extreme temperature, large temperature differential, and ultra-high vacuum, as well as in safety-critical applications.

Cutting Tools

Ceramics based on Industrial Silicon Nitride offer increased resistance to abrasion and thermal shock and have high fracture toughness39,40. These ceramic cutting tools have a needle-like structure that is embedded in a temperature-resistant grain-boundary. These structures enhance crack deflection, crack bridging, and pull-out effects, and lead to superior fracture toughness.

When used with powerful machine tools, silicon nitrides enable high cutting speeds (more than 800 in./min.) and feeds (0.2 to 0.3 in./min.) for rough boring cast iron38.

Energy

In energy conversion, ceramics are found in solar cells and solar collectors that transform solar energy into electricity. In fuel cells and batteries that change chemical to electrical energy, ceramics can withstand the corrosive nature and high temperatures required to operate2. In thermoelectric generators that convert heat to power and in gas turbines that produce mechanical energy from chemical energy, the strength, and toughness that silicon nitride ceramics provide allow these systems to operate at peak efficiency.

Automotive & Aerospace Brakes

With its superior thermal shock resistance, thermal conductivity, strength, toughness, and chemical inertness, Industrial Powder is the ideal material as an additive grain for braking systems in high-performance automobile and aerospace vehicles41. The addition of silicon nitride provides a quieter braking system under a wide range of temperatures and road conditions41.

Industrial Silicon Nitride is an ideal material for these applications due to its excellent thermal shock resistance, strength, toughness, and chemical inertness.
Back To Top