Yttria stabilized zirconia YSZ powder advantage for TBC coating
Yttria Stabilized Zirconia (YSZ) powder is an zirconium oxide based ceramic material. Spherical YSZ powder is more suitable for thermal barrier coating (TBC) in aerospace, gas turbine, and other high-temperature applications.
Here are the main advantages of yttrium stabilized zirconium oxide powder:
1. Excellent thermal stability
High temperature stability.YSZ maintains structural stability at high temperatures (usually up to 1200 ° C) and is not prone to phase transition. This makes it very suitable for use in gas turbines and other equipment that requires operation in high-temperature environments.
Thermal expansion compatibility.Thermal expansion coefficient of YSZ powder matches many alloy matrix materials (such as nickel based high-temperature alloys). Thus, it reduces thermal stress and lowering the risk of coating cracking.
2. Low thermal conductivity
Thermal insulation performance.
YSZ has a low thermal conductivity. It can effectively reduce the surface temperature of the material and protect the substrate material from high temperature damage. This helps to improve the lifespan and efficiency of the equipment.
3. Good chemical stability
Oxidation resistance. Yttria stabilized zirconia powder has good oxidation resistance at high temperatures, is not easily reactive with oxygen, and maintains the integrity of the coating.
Corrosion resistance. YSZ has good resistance to various corrosive media (such as fuel combustion products) in high temperature environments.
4. Good mechanical performance
Resilience. YSZ has a certain degree of toughness, which can withstand a certain degree of mechanical stress and thermal impact, reducing the risk of coating peeling.
Anti crack propagation. YSZ’s coating has a certain ability to resist crack propagation, which helps to extend the service life of the coating.
5. Wide application
Aerospace field: YSZ is widely used in key components such as blades and combustion chambers in aviation engines and gas turbines to improve their high temperature resistance.
In the industrial field, YSZ is also widely used as a thermal barrier coating in equipment such as industrial furnaces and high-temperature pipelines to improve the durability and efficiency of the equipment.
Yttrium stabilized zirconia, as a thermal barrier coating, has become an indispensable key material in fields such as aerospace and gas turbines due to its excellent thermal stability, low thermal conductivity, chemical stability, and good mechanical properties.
