These sensors will become increasingly sophisticated while needing to perform reliably in extreme temperatures and corrosive environments. SCHOTT’s HEATAN technology is able to withstand these operating conditions with superior robustness, while also offering increased competitiveness through reduced design complexity.
Sensors in automobiles are often placed in challenging environments, such as near the engine or facing exposure to exhaust gas. These types of sensors, including temperature, gas, PM/PN, NOx, and soot load sensors, need to offer long-term mechanical stability in corrosive, ultra-high temperature conditions. For example, in exhaust gas applications, sensors need to maintain good performance in temperature cycling conditions up to 950°C for at least 50,000 cycles. These challenging conditions necessitate robust harsh environment performance capabilities for the components integrated in the sensor system.
SCHOTT has developed HEATAN feedthroughs for heat-exposed automotive sensors. They are temperature- and corrosion- resistant and able to withstand conditions of 1000°C and above. They also offer reliable mechanical and temperature cycling stability for up to 300,000 kilometers.
What makes HEATAN feedthroughs unique, apart from their heat resistance, is that they enable sensor manufacturers to design high-temperature sensors that are much more simple. HEATAN feedthroughs are single-component solutions, which means they can be assembled by sensor manufacturers using a simple sealing process. In contrast, conventional sensor sealing assemblies rely on multi-component designs that require multiple manufacturing steps to achieve the necessary high temperature properties.
SCHOTT HEATAN feedthroughs are based on glass-ceramic technology, which was initially developed for high-temperature nuclear reactors and oil & gas applications.