Name

Zirconia fiber felt

ingredient

Yttria stabilized zirconia fiber

Advantages

With certain strength and hardness

Good heat preservation and insulating property

Low thermal conductivity

Ultra-high temperature stability

Can process and change its bulk density

Applications

Can use for thermal insulation materials of high -temperature industrial furnace,the liner of furnace for grown high temperature crystals, the protection of oxygen sensors or carbon sensors ,nuclear fusion test.

Ingredient

ZrO2+ HfO2

Y2O3

SiO2

Fe2O3

TiO2

Al2O3

CaO

MgO

Content(％)

85

15

0.06

0.02

0.01

0.01

0.02

0.01

Bulk density(g/cm3)

0.6

1.0

2.0

Porosity％

95

85

70

Fusing point℃

2690

2690

2690

Compressive strength(MPa)

(parallel to the direction of thickness)

4.52

9.52

19.52

Thermal expansivity

(room temperature 1180℃)

(perpendicular to the direction of thickness)

3.7×10-6

6.7×10-6

4.7×10-6

Linear shrinkage

(perpendicular to the direction of thickness)％

1650℃1h

0

0

0

1650℃24h

0.2

0.1

0.1

2000℃0.5h

2.0

2.0

1.0

Thermal conductivity

W/m.k

(parallel to the direction of thickness)

400℃

0.05

0.08

0.10

1000℃

0.08

0.12

0.12

1180℃

0.10

0.13

0.14

1450℃

0.12

0.15

0.17

1650℃

0.18

0.20

0.22