99% ceramic circle
Category: 99% Alumina Ceramic  Publish Time: 2015-02-03 14:41 

99% ceramic circle
We produce a lot kinds of ceramic tubes by materials of alumina or zirconia.
 

We produce a lot kinds of ceramic tubes by materials of alumina or zirconia.

Isostatic pressing is our main process, dry press also being used.

We can provide samples for free, and make products according to your specific requirement.

Our company made ceramics  Since 2005, so we have much experience , could give you good advice.

 

Name

Unit

Alumina

Zirconia

Content

%

≥95

≥99

≥99.7

≥94

Density

g/cm3

3.60

3.90

3.90

6.00

Hardness (Hv0.5)

GPa

13.1

15.0

17.1

13.2

flexural strength

 

MPa≥

340

310

370

1000

Elasticity

  GPa

 300

 330

 350

 200

Poisson's ratio

 

 

 0.23

 0.23

 0.23

 0.30

Max Tem.

°C≥

1400

1750

1800

1050

Heat expansion

×10-6/°C(40-800°C)

7.8

8.0

8.0

11.0

Thermo conductivity

 

W/m·K(20°C)

22

28

31

2.6

Thermal Resistance

 °C

 200

 200

 230

 300

dielectric strength

 

 V/m

 15×106

 15×106

 15×106

 11×106

dielectric phase angle

 (1MHz)

 ×10-4

4

2

1

16

SIC(1MHz)

 

9.2

9.8

9.9

33

Nitric Acid

 (60%)90°C

WT Loss mg/cm2/day≤

0.12

0.10

0.05

  ≠0

Sodium hudroxide

 (30%)80°C

WT Loss mg/cm2/day≤

0.53

0.26

0.04

0.08

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ouo company:

 

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