The high focus on emission control of soot and NOx gasses from diesel engines has led to an increasing demand for ceramic filters. Such ceramic filters can trap more than 99% of the harmful soot particles.
Silicon Carbide’s ability to withstand high temperatures during regeneration of the filter and its low thermal expansion make SiC an excellent candidate for diesel particulate filters, especially for passenger cars, but also for retro fit of filters for busses, trucks and the off-road market.
Honeycomb ceramic filters made of silicon carbide are formed by extrusion and bonded either by recrystallization or reaction bonded to control the pore size and distribution.
Saint-Gobain is offering a variety of tailor made products for the production of diesel particulate filters.