Yttria stabilized zirconia Powder for Plasma spraying

Yttrium stabilized zirconia is an excellent inert material that exhibits good insulation and thermal insulation properties at high temperatures. Meanwhile, yttrium stabilized zirconia features with excellent high-temperature volume stability, corrosion resistance, and excellent thermal shock resistance under various extreme conditions. Therefore, it is often used to make thermal insulation coatings, electronic ceramic powders and spray powders, precision casting shell materials, etc.

Zirconia is a ceramic material with high strength, hardness, and heat resistance. However, pure zirconium oxide exhibits a monoclinic phase. Phase transition and volume expansion occurs at 1100 ° C with that phase, resulting in unstable physical properties. In order to improve the physical properties of zirconia, it is necessary to add rare earth elements or alkaline earth elements such as yttrium oxide, gadolinium oxide, magnesium oxide, and calcium oxide to maintain stable physical and chemical properties.

Yttrium oxide (Y2O3) is one of the most common stabilizers for stabilizing zirconia. By adding yttrium oxide, zirconia is transformed into a stable cubic zirconia structure. This increases its resistance to damage and bending strength at high temperatures.

Technical Index of Yttria stabilized zirconia:

Main Chemical	ZrO2:90-92% Y2O3:7-8%
CAS NO.	114168-16-0
Melting point	≥2600 °
molecular weight	349.03 g/mol
Color	White

Chemical composition:

Chemical item	Standard Value	Typical Value
ZrO2	≥90%	91.78%
Y2O3	7-8%%	7.96%
SiO2	≤0.3%	0.05%
Al2O3	≤0.2%	0.01%
Fe2O3	≤0.2%	0.04%
TiO2	≤0.2%	0.01%

Specifications:

Spec. No.	PYD-AQ	PYD-AP	PYD-HP
Manufacturing Process	Electro-fusing and crushing	Plasma spheroidization and sintering	Plasma granulation and sintering
Particle shape	granule	Microsphere	Microsphere
Particle size	15-45um, 22-63um, 10-90um, 11-125um	15-45um, 22-63um, 10-90um, 11-125um	15-45um, 45-75um, 22-63um, 10-90um, 11-125um
Feature	Low monoclinic phase, excellent fluidity, chemical homogeneity and structural integrity. Spayed coating has high porosity.	Spherical shape made from HOSP process. Low monoclinic phase, excellent chemical homogeneity and structural integrity.	Spherical shape, high purity, high monoclinic phase, but will stabilize again during the spraying process.
Applications	Especially suitable for long-term repeated thermal shock environments. Such as sintering plates, ladles, and high-end MLCC capacitor material sintering crucible coatings	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 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