1. Determine the Thermal Shock Parameter for Silicon Nitride and Silicon Carbide: Modulus of Elasticity (psi) Fracture Stress (psi) CTE (cm/cmK) Thermal Cond. (cal/cm s K) 3.3 x 10-6 Material Silicon Nitride Silicon Carbide 45 x 106 60 x 106 80,000 25,000 4.3 x 10-6 0.035 0.21 Which is more resistant to thermal shock if quenched under identical conditions? WHY?

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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1. Determine the Thermal Shock Parameter for Silicon Nitride and Silicon Carbide:
Material
Silicon
Nitride
Silicon
Carbide
Modulus of
Elasticity (psi)
45 x 106
60 x 106
Fracture
Stress (psi)
80,000
25,000
CTE
(cm/cmK)
3.3 x 10-6
4.3 x 10-6
Thermal Cond.
(cal/cm s K)
0.035
0.21
Which is more resistant to thermal shock if quenched under identical conditions?
WHY?
Transcribed Image Text:1. Determine the Thermal Shock Parameter for Silicon Nitride and Silicon Carbide: Material Silicon Nitride Silicon Carbide Modulus of Elasticity (psi) 45 x 106 60 x 106 Fracture Stress (psi) 80,000 25,000 CTE (cm/cmK) 3.3 x 10-6 4.3 x 10-6 Thermal Cond. (cal/cm s K) 0.035 0.21 Which is more resistant to thermal shock if quenched under identical conditions? WHY?
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