Sic Seal Material Property
As seguintes tabelas introduzem R-SiC e S-SiC.
properties
|
R-SiC
|
S-SiC
|
Porosity (%)
|
≤0.3
|
≤0.2
|
Density (g/cm3)
|
3.05
|
3.1~3.15
|
Hardness
|
110~125 (HS)
|
2800 (kg/mm2)
|
Elastic Modulus (Gpa)
|
≥400
|
≥410
|
SiC Content (%)
|
≥85%
|
≥99%
|
Si Content (%)
|
≤15%
|
0.10%
|
Bend Strength (Mpa)
|
≥350
|
450
|
Compressive Strength (kg/mm2)
|
≥2200
|
3900
|
Coefficient of heat expansion (1/℃)
|
4.5×10-6
|
4.3×10-6
|
Heat resistance (in the atmosphere) (℃)
|
1300
|
1600
|
Test Environment
|
Corrosive Weight Loss (mg/cm2yr)
|
Concentration Reagent (wt%)
|
Temperature
|
R-SIC
|
S-SIC
|
(℃)
|
98%H2S04
|
100
|
50
|
1.5
|
50% NaOH
|
100
|
1000
|
2.5
|
53% HF
|
100
|
7
|
0.2
|
85% H3P04
|
100
|
8
|
0.2
|
70% HNO3
|
100
|
0.5
|
0.2
|
45% KOH
|
100
|
1000
|
0.2
|
25% HCL
|
100
|
0.9
|
0.2
|
10% HF plus
|
25
|
1000
|
0.2
|
57% HNO3
|
Test Environment: 125-300 Horas de testes imersos, continuamente agitados