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Properties of Fine Ceramics

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Ceramics

Mechanical Properties

Hardness (Vickers Hardness)

Used to evaluate the wear resistance of fine ceramics.
The higher the value, the more resistant it is to wear.

Highlow Value(GPa) Material Name Details
28 SiC Details
28 High Purity SiC Details
15.7 High Purity Alumina Details
14.7 Alumina Details
14 Alumina Sheets & Plates Details
11.8 Zirconia Details
10.6 Black Alumina Details
10 Conductive Corseed Details
6.5 Heat-Insulative Alsima L Details

Stiffness (Young's Modulus)

Used to evaluate the bending properties of fine ceramics.
The higher the value, the harder the material is to bend or deform.

Highlow Value(GPa) Material Name Details
446 High Purity SiC Details
430 SiC Details
390 Alumina Details
363 Black Alumina Details
360 High Purity Alumina Details
340 Alumina Sheets & Plates Details
288 Conductive Corseed Details
210 Zirconia Details
115 Heat-Insulative Alsima L Details

Fracture Toughness

Used to evaluate how easily fine ceramics can be broken by cracks, the higher the value, the harder it is to break.
Fracture toughness is the degree of how much ceramics can sustain their integrity when pressure is applied to a cracks or defective area.

Highlow Value(MPa・m^1/2) Material Name Details
7 Zirconia Details
4 Alumina Details
4 High Purity Alumina Details
3.2 Black Alumina Details
3 Alumina Sheets & Plates Details
3 Conductive Corseed Details
2〜3 SiC Details
2〜3 High Purity SiC Details
14 Heat-Insulative Alsima L Details

Bending Strength

Used to evaluate fine ceramics' resistance to bending stress, the higher the value, the harder it is to bend.

Highlow Value(MPa) Material Name Details
980 Zirconia Details
450 High Purity SiC Details
410 SiC Details
370 Alumina Details
370 Alumina Sheets & Plates Details
370 Black Alumina Details
330 High Purity Alumina Details
310 Conductive Corseed Details
146 Heat-Insulative Alsima L Details

Specific Gravity (Density)

Used to evaluate the weight of fine ceramics, the higher the value, the heavier the unit volume is.

Highlow Value(g/cm^3) Material Name Details
6 Zirconia Details
4.24 Conductive Corseed Details
3.94 Alumina Details
3.94 High Purity Alumina Details
3.75 Alumina Sheets & Plates Details
3.75 Black Alumina Details
3.19 High Purity SiC Details
3.14 SiC Details
2.41 Heat-Insulative Alsima L Details

Thermal Properties

Thermal Expansion (Linear Expansion Coefficient)

Used to evaluate the degree of fine ceramics' expansion by heat, the higher the value, the more it will expand or shrink due to temperature differences.

Highlow Value(X10-6) Material Name Details
10.0 Zirconia Details
8.8 Conductive Corseed Details
8.1 Black Alumina Details
7.7 Alumina Details
7.7 Alumina Sheets & Plates Details
7.7 High Purity Alumina Details
4.1 SiC Details
4.1 High Purity SiC Details
2.1 Heat-Insulative Alsima L Details

Thermal Conductivity

Used to evaluate the fine ceramics' ability to transfer heat, the higher the number, the more heat is transferred.

Highlow Value
(W/(m・K) )
Material Name Details
170.0 SiC Details
140.0 High Purity SiC Details
32.0 Alumina Details
31.2 Black Alumina Details
31.0 High Purity Alumina Details
23.0 Alumina Sheets & Plates Details
5.5 Conductive Corseed Details
4.0 Zirconia Details
2.9 Heat-Insulative Alsima L Details

Electric Properties

Semi-Insulative / Semi-Conductive

It is used to evaluate the difficulty of fine ceramics passing through electricity.
The higher the value, the more difficult it is to pass electricity.

Volume
resistivity
Highlow
Value(Ω・cm ) Material Name Details
>1015 Alumina Details
>1015 Alumina Sheets & Plates Details
>1015 High Purity Alumina Details
>1014 Heat-Insulative Alsima L Details
>1014 Black Alumina Details
>1012 Zirconia Details
×108 High Purity SiC Details
×106 SiC Details
1 Conductive Corseed Details

Porous Ceramics

Mechanical Properties

Bending Strength

Used to evaluate fine ceramics' resistance to bending stress, the higher the value, the harder it is to bend.

Highlow Value(MPa) Material Name Details
91 AZP-50 Details
90 AZPS-40 Details
76 AZPW-40 Details
69 AZP-60 Details
22 AZPWB40 Details
17 AZPW-45 Details

Specific Gravity (Density)

Used to evaluate the weight of fine ceramics, the higher the value, the heavier the unit volume is.

Highlow Value(g/cm^3) Material Name Details
2.56 AZPW-40 Details
2.48 AZPWB40 Details
2.4 AZPW-45 Details
1.9 AZPS-40 Details
1.82 AZP-50 Details
1.57 AZP-60 Details

Thermal Properties

Thermal Expansion (Linear Expansion Coefficient)

Used to evaluate the degree of fine ceramics' expansion by heat, the higher the value, the more it will expand or shrink due to temperature differences.

Highlow Value(X10-6) Material Name Details
7.8 AZP-60 Details
7.7 AZP-50 Details
7.6 AZPW-40 Details
7.6 AZPWB40 Details
3.3 AZPS-40 Details

Thermal Conductivity

Used to evaluate the fine ceramics' ability to transfer heat, the higher the number, the more heat is transferred.

Highlow Value
(W/(m•K) )
Material Name Details
70 AZPS-40 Details
8 AZP-50 Details
6 AZP-60 Details
3 AZPW-40 Details


ASUZAC conducted an acid corrosion resistance test for the following ceramics: Alumina (AR), Silicon Carbide (ASiC), Corseed (ACTR), Alsima L (ARSM-L) and Porous Alumina (AZP-50).
A piece of these ceramics was immersed into sulfuric acid, nitric acid, hydrochloric acid, phosphoric acid, hydrofluoric acid, and sodium hydroxide.

Experimental conditions:
Melting temperature 100℃
Immersion time 24 hours
Specimen size 3 × 4 × 39mm
Solution concentration: 3 mol / l , sulfuric acid 3 mol / l , nitric acid 3 mol / l, hydrochloric acid 3 mol / l , phosphoric acid 3 mol / l , hydrofluoric acid 6 mol / l

(Click each material name to jump to the details page.)
Materials Hydrochloric acid Sulfuric acid Nitric acid Phosphoric acid Hydrofluoric acid Hydroxylation sodium
Almina (AR) -0.120 -0.121 -0.034 -0.191 -0.466 -0.068
SiC (ASiC) -0.070 0.000 0.000 0.000 -0.295 0.000
Corseed (ACTR) -0.052 -0.138 -8.029 0.000 -0.587 -0.121
Alsima L (ARSM-L) -1.846 -1.272 -1.199 -1.312 -16.243 -4.903
Porous Alumina (AZP-50) -5.093 -4.244 -6.005 -3.459 -7.344 -3.385


Acid Corrosion Resistance Comparison among Ceramics
Unit: mg/cm2

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