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The performance sheet in thulium and ceramic material
Capacity
Sign
B4C
99Al2O3
ZTA-20%
ZrO2
Si3N4
SiC
Density
g/cm 3
2.4~2.51
3.7~3.99
5.5
6.0
3.2
3.2
HV Hardness
Kg/mm
2700~3200
2300~2700
1470~1500
1300~1500
1700 ~2700
2350~2450
Flexural Strength
MPa
350~400
300~400
700
1000~1500
900
450~800
Compressive strength
MPa
1800~2500
2800~3500
2000
2000
3500
2250~3000
Fracture Toughness
Mpa·m -3/2
6.0
2~4
5~6
11.0
7.0
4~5
Weibull modulus
GPa
> 7
> 10
> 15
> 15
> 6
Elastic modulus
GPa
407
260
210
320
410
Poisson's ratio
0.2
0.23
0.30
0.26
0.16
Thermal expansion coefficient
× 10 -6 / °C
4.5
6.5~8.6
9.4
10.5
3.2
4.3
Thermal shock
Δ T °C
200
470
250
500
350
Resistance
Ω /cm 2
0.3 ~ 0.8
> 1014 ~1016
> 10 10
> 10 10
> 10 14
100 ~2
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