4 mol % Yttria-stabilised Zirconia (4YSZ)
Innovnano manufactures 4 mol % yttria stabilised zirconia in the following powder forms:
- 60 µm (D50) spray-dried free flowing granules either with or without polymeric additives
- 500 nm (D50) powder dispersed in ethanol or as an aqueous suspension
These nanostructured powders are designed for the production of thermal barrier coatings (TBCs) via conventional air plasma spraying (APS) and the rapidly emerging suspension plasma spraying (SPS).
Our 4YSZ powder exhibits excellent dispersion properties, particularly in the ethanol suspension, where no dispersants or other additives are required - resulting in simpler chemistry.
4YSZ in suspension
Extensive independent testing of the 25% (weight) 4YSZ in suspension demonstrates its suitability for SPS applications. TBCs that exhibit a good morphology with strain relief structure show significantly lower thermal conductivity properties and good erosion and thermal cycling resistance.
Spray-dried 4YSZ granules
APS applications are well established and typically use larger 4YSZ granules to entrain into the plasma stream of conventional spray gun torches.
We can spray dry our 4YSZ powder to produce spherical micro-granules for easy handling and compatibility with your existing technology or manufacturing equipment. What differentiates us is the lower thermal conductivity TBCs that our powders have been shown to produce.
Industries and applications
Our 4YSZ for TBCs is ideal for improving the performance and life-time of turbine blades in the following advanced sectors: