8 mol.% YSZ Yttria Stabilized zirconia Powder for TBC spray
8 mol.% YSZ Yttria Stabilized zirconia Powder for TBC spray, with its zirconia primarily in the tetragonal phase, exhibits stable high-temperature phase structure and excellent sintering resistance to aging, making it an ideal powder for high-temperature thermal barriers and insulating coatings. It possesses characteristics such as low thermal conductivity, high oxygen ion conductivity, and resistance to high-temperature erosion and thermal shock, making it suitable for processes like plasma spraying and significantly improving the service life and operational efficiency of high-temperature components.
8 mol.% YSZ Yttria Stabilized zirconia Powder for TBC spray Features：
- Stable Crystalline Phase. Low monoclinic phase content, no phase transformation, no volume expansion, and extremely stable structure at high temperatures.
- Excellent Thermal Insulation. Low thermal conductivity, outstanding thermal insulation effect. Thus, significantly reducing the substrate’s operating temperature.
- Resistant to Thermal Shock. Resistant to high-temperature impact and thermal fatigue, it does not crack or peel after prolonged thermal cycling.
- Resistant to High-Temperature Sintering. Does not easily sinter and shrink at high temperatures, densification is slow, and the coating’s pore structure and thermal insulation performance are well maintained.
- Strong Spraying Compatibility. Good fluidity and moderate melting point, suitable for plasma spraying, flame spraying, etc., resulting in strong coating adhesion and controllable density.
- Chemically Stable. Resistant to oxidation and gas corrosion, good compatibility with high-temperature alloy substrates, and long service life.
Chemical composition:
| SPEC. | ZrO2+HfO2 | SiO2 | Al2O3 | Fe2O3 | TiO2 | CaO | MgO | Y2O3 |
| 8YSZP | ≥90 | ≤0.20 | ≤0.05 | ≤0.05 | ≤0.05 | ≤0.05 | ≤0.05 | 7-8 |
| 8YSZ04 | ≥90 | ≤0.50 | ≤0.50 | ≤0.05 | ≤0.20 | ≤0.05 | ≤0.05 | 7-9 |
| 8YSZ05 | ≥90 | ≤0.50 | ≤0.20 | ≤0.05 | ≤0.40 | ≤0.20 | ≤0.05 | 7-8 |
| 8YSZH | ≥90 | ≤0.05 | ≤0.05 | ≤0.05 | ≤0.05 | ≤0.05 | ≤0.05 | 7-9 |
| 8YSZS | ≥90 | ≤0.20 | ≤0.05 | ≤0.05 | ≤0.05 | ≤0.05 | ≤0.05 | 7-8 |
Physical properties:
| SPEC. | Monoclinic phase ratio | Color | Bulk Density |
| 8YSZP | ≤10 | White | 1.8-2.2 g/cm3 |
| 8YSZ04 | ≤10 | Yellow | 1.8-2.2 g/cm3 |
| 8YSZ05 | ≤20 | Brown Yellow | 2.2-2.5 g/cm3 |
| 8YSZH | ≤20 | White | 1.8-2.4 g/cm3 |
| 8YSZS | ≤6 | White | 2.3-2.9 g/cm3 |
Product Features & applications:
| Spec. No. | 8YSZP | 8YSZ04 | 8YSZ05 | 8YSZH | 8YSZS |
| Particle shape | Microsphere | Microsphere | Microsphere | Microsphere | granule |
| Particle size | 15-45um, 22-63um, 10-90um, 11-125um | 15-45um, 22-63um, 10-90um, 11-125um 45-147um | 15-45um, 22-63um, 10-90um, 11-125um | 15-45um, 45-75um, 22-63um, 10-90um, 11-125um | 15-45um, 22-63um, 10-90um, 11-125um |
| Feature | Spherical shape made from HOSP process. Low monoclinic phase, excellent chemical homogeneity and structural integrity. Spherical shape made from HOSP process. Low monoclinic phase, excellent chemical homogeneity and structural integrity. | This powder is highly cost-effective and has a unique porous structure. It is easy to melt, has a very high powder application rate, and strong adhesion. | Spherical shape, high purity, high monoclinic phase, but will stabilize again during the spraying process. | Low monoclinic phase, excellent fluidity, chemical homogeneity and structural integrity. Spayed coating has high porosity. | |
| Applications | Particularly suitable for severe and prolonged thermal shock environments, with extremely long coating life. Mainly used for coating aviation turbine blades and heavy-duty gas turbine blades. Under thermal shock erosion in the core high-temperature zone (1200 ° C) of heavy-duty gas turbine blades, the lifespan exceeds – years.
| Suitable for use in the low-temperature zone of the outer edge of thermal protection coatings for hot or other components of high-porosity turbines, such as low-temperature zone coatings for the outer edge of gas turbine blades. | Suitable for thermal protection coatings of standard porosity (4-12 volume percent) turbine thermal components or other parts, with a maximum operating temperature of up to 1350 ° C | Especially suitable for long-term repeated thermal shock environments, such as sintering plates, ladles, and high-end MLCC capacitor material sintering crucible coatings | |
