8% mol Yttrium Stabilized zirconia YSZ Powder
8% mol Yttrium Stabilized zirconia YSZ Powder, specifically designed for thermal barrier coating (TBC) spraying, features zirconia predominantly in the tetragonal phase. This tetragonal-dominant phase structure endows the powder with exceptional high-temperature phase stability and superior resistance to sintering aging, rendering it an optimal choice for fabricating high-temperature thermal barrier and insulating coatings.
Beyond its stable phase performance, this YSZ powder boasts a combination of outstanding properties, including low thermal conductivity, high oxygen ion conductivity, as well as remarkable resistance to high-temperature erosion and thermal shock. These inherent characteristics make it highly compatible with spraying processes such as plasma spraying, and when applied, it effectively enhances the service life and operational efficiency of high-temperature components in various industrial applications.
8% mol Yttrium Stabilized zirconia YSZ Powder 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 | |
