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 HOME Technical Know-HowApplications of Precision ceramic materials property of matter comparative table of precision ceramic material |
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[property of matter comparative table of precision ceramic material]
| property of matter |
Unit |
Alumina(Al₂O₃) |
Zirconia
(PSZ) |
Silicon Nitride
(Si₃N₄) |
Silicon Carbide
(SiC) |
| 85% |
96% |
99.7% |
| Specific gravity |
|
3.4 |
3.7 |
3.9 |
6.0 |
3.2 |
3.2 |
| Bending strength |
Kgf/㎠ |
2,800 |
3,400 |
3,600 |
9,000 |
6,000 |
6,000 |
| Compressive strength |
Kgf/㎠ |
17,000 |
19,000 |
21,000 |
- |
25,000 |
25,000 |
Solidity
(Vickers) |
Kgf/㎟
(500gf) |
1,200 |
1,400 |
1,500 |
1,500 |
1,200 |
2,200 |
| 파괴인성 |
KIC |
3~4 |
7~8 |
6~8 |
4~7 |
| Coefficient of thermal expansion |
10-6/℃ |
7~8 |
9~11 |
2~4 |
4~5 |
| Maximum allow temperature |
℃ |
1,400 |
1,500 |
1,600 |
- |
1,200 |
1,600 |
[Wear resistance comparative table of precision ceramic material]
| material |
Alumina (Al₂O₃) |
Zirconia
(PSZ) |
Silicon Nitride
(Si₃N₄) |
(Hi-Cr) |
stainless steel
(SUS-304) |
| 85% |
96% |
| 마모양 |
1.1 |
0.5 |
0.6 |
6.5 |
9.5 |
 Abrasion test : Sandblast method(Abrasion depth per unit time)
Sandblast condition :
Pressure
- 3Kgf/㎠
샌샌드브라스트 조 건 : medium
- SiC #20 Powder
샌샌드브라스트 조 건 : dispersion range - 15mm
샌샌드브라스트 조건 : dispersion angle
- 90°
샌샌드브라스트 조건 : dispersion radius - 7mm
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