yttriumstabilisierte

Yttriumstabilisierte is a term that refers to materials that have been stabilized by the addition of yttrium. This stabilization process is most commonly applied to ceramic materials, particularly zirconium dioxide (ZrO2), also known as zirconia. In its pure form, zirconia undergoes significant phase transformations upon heating and cooling, leading to cracking and instability. The addition of yttrium oxide (Y2O3) inhibits these undesirable phase changes, creating a much more robust and stable ceramic. This stabilized zirconia is often referred to as Yttria-Stabilized Zirconia (YSZ).

YSZ exhibits exceptional properties, including high strength, fracture toughness, hardness, and chemical inertness. It also possesses a low thermal conductivity and a high melting point, making it suitable for high-temperature applications. Due to these characteristics, YSZ finds widespread use in various fields. It is employed as a structural ceramic in applications such as cutting tools, dental implants, and components for gas turbines and diesel engines. Its electrical properties, specifically its ionic conductivity at elevated temperatures, also make it a crucial material in oxygen sensors for automotive exhaust systems and industrial combustion control. Furthermore, YSZ is utilized as a thermal barrier coating in aerospace engines to protect underlying metal components from extreme heat. The specific properties of YSZ can be tailored by varying the concentration of yttria.