Super High Temperature Resistance Material

Performance and its index of zirconia fibers

① The super-high service temperature: Maximum use temperature of zirconia fibers is up to 2200℃(3992℉), even as high as 2500℃(4532℉), zirconia fibers can remain normal shape.

② The best thermal insulating property: The coefficient of thermal conductivity of zirconia is the lowest among all metal oxides.

③ The best corrosion resistance performance: The resistant ability against acid corrosion and alkaline corrosion of zirconia is remarkably superior to alumina and silica.

④ The lowest volatilization and non-pollution properties at high temperatures: The high-

temperature saturated vapor pressure of zirconia is the smallest among all metal

oxides, which makes zirconia fibers uneasily volatilize and have non-pollution at high

temperatures.

Index				YLZFB-1		YLZFB-2		YLZFB-3
Bulk Density (Kg/m³)				500~1000		1000~1500		1500~2000
Maximum Working Temperature (℃)				1800		2000		2200
Fracture Toughness (MPa) (5% Compressed)				≥0.5		≥1.5		≥3.0
Chemical Compositions	ZrO₂ +Y₂O₃			≥99.7%
	SiO₂+Fe₂O₃+Na₂O+Al₂O₃			≤0.3%
	Organics Addition			0
Phase Compositions				Cubic ZrO₂
Appearance				White
Average diameter				3-6 microns
Thermal Expansion Coefficient（10^-6 K^-1）				~10.5
Linear Shrinkage			1600℃/2h	≤0.5%	≤0.2%		≤0.1%
Thermal Conductivity （W/m×K）			350℃	≤0.06	≤0.08		≤0.10
			1000℃	≤0.09	≤0.12		≤0.15
			1500℃	≤0.15	≤0.18		≤0.21
Standard Size of Boards (mm) Length×Width×Thickness				100×100×20; 200×300×40; 600×400×50
Note:		Special shape/size products can be customized. Please send your requirements to us.

Apllication Fields

① Zirconia fibers can be used as super-high temperature refractory

materials for single crystal growth furnaces, 1800℃(3272℉) furnaces, gas burning or oil burning furnaces and other high-temperature apparatus, finding their applications in single crystal growth, ceramic sintering, metal smelting, petroleum cracking, materials heat treatment and scientific research fields. Not only have excellent thermal insulating properties, but also meet the requirement for rapid temperature increase and rapid temperature decrease.

② Zirconia fibers can be used as super-high temperature insulating materials, fence materials, ablation materials and satellite battery separation materials, finding their applications in spaceflight, military and nuclear power fields.

③ Zirconia fibers can be used as reinforcement materials for metal-matrix and ceramic-matrix composite materials, finding their applications in aviation and spaceflight fields. Especially when used for ablative and insulating functional composite materials, they will exert their unique advantages.

④ Zirconia fibers also can be used as high-temperature filtration materials and high-temperature reaction catalyst carriers, and so on.

ZrO2 thermal insulating barrier for crystal growth furnace

Zirconia fiber's special advantages for crystal growth furnaces

As substitute of molybdenum, ZrO2 fiber applied as thermal insulation material in crystal growth furnace, features as below: