The industry trend of increasing fuel injection pressures and cylinder operating
pressures, and other component modifications designed to improve emissions and fuel
economy, will only exacerbate the warranty problems with metal components. Ceradyne’s
unique grade of silicon nitride offers engine designers a superior material that
is proven to solve these warranty problems.
Ceradyne has developed silicon nitride to a level where valve trains of heavy-duty
diesel and gasoline engines, high-pressure common rail fuel pumps, and unit fuel
injection systems can operate under conditions where conventional metal parts fail.
Ceradyne silicon nitride cam rollers operate at contact stresses of 1.0 to 2.4 GPa
(150,000 – 350,000 psi) with no measurable wear to the silicon nitride or the companion
aerospace applications challenge the performance limits of conventional materials.
Ceralloy® Silicon Nitride is an excellent material solution based on its high temperature
strength, excellent fracture toughness, high hardness and tribological properties.
Silicon nitride aerospace applications result in superior mechanical reliability
and wear resistance.
Automotive / Transportation elements include:
Ceradyne also supplies prototype engine components for various R&D programs that
further demonstrate the breadth of silicon nitride applications in the automotive
/ transportation industry.