Hollow zirconium oxide microspheres (HZM)

Properties of HZM

Main material: zirconium oxide stabilized with 8% yttrium oxide;
Spherical shape
Developed microsphere surface, cm²/cm³;
Microsphere size: 5-100 μm;
Bulk density: 2.5-2.7 g/cm³;
plasma and detonation spraying of thermal barrier and wear-resistant coatings;
Refractory materials;
fillers for refractory castables and coatings;
filler for coatings and paints.

Microstructure of the cross-section of a zirconium dioxide coating formed from a powder mixture (ZrO2 + 8% Y2O3) of hollow microspheres
Columnar structure of a zirconium dioxide coating formed from a powder mixture (ZrO2 + 8% Y2O3) of hollow microspheres (X20,000)

Types of hollow zirconium oxide microspheres stabilized with 8% yttrium oxide (HZM-8Y)

Size	5-100	5-40	5-70
Appearance	loose powder
Color	white
Bulk density, g/cm³	2,5-2,7
Specific weight, g/cm³t	6,0
Hardness, Mohs scale	Over 8,5
LOI*, no more than %	LOI*, no more than %
Chemical composition, %	ZrO2	Over 90,0
	Y2O3	8,0-8,6
	Al2O3	Less than 1,5
	Fe2O3	Less than 0,07
	SiO2	Less than 0,5

LOI*, % - is relative mass change when baking.