Silicon Nitride - Reaction Bonded Silicon Nitride (RBSN)

Material: Silicon Nitride - Reaction Bonded Silicon Nitride (RBSN)
Composition: Si3N4
Property Minimum Value (S.I.) Maximum Value (S.I.) Units (S.I.) Minimum Value (Imp.) Maximum Value (Imp.) Units (Imp.)
Atomic Volume (average) 0.0058 0.006 m3/kmol 353.938 366.142 in3/kmol
Density 2.4 2.5 Mg/m3 149.827 156.07 lb/ft3
Energy Content 150 200 MJ/kg 16250.8 21667.7 kcal/lb
Bulk Modulus 121 156 GPa 17.5496 22.6259 106 psi
Compressive Strength 550 650 MPa 79.7708 94.2745 ksi
Ductility 0.00074 0.00081 0.00074 0.00081 NULL
Elastic Limit 140 160 MPa 20.3053 23.206 ksi
Endurance Limit 121.23 141.43 MPa 17.5829 20.5127 ksi
Fracture Toughness 1.8 2 MPa.m1/2 1.63808 1.82009 ksi.in1/2
Hardness 8000 10000 MPa 1160.3 1450.38 ksi
Loss Coefficient 2e-005 5e-005 2e-005 5e-005 NULL
Modulus of Rupture 200 350 MPa 29.0075 50.7632 ksi
Poisson's Ratio 0.26 0.27 0.26 0.27 NULL
Shear Modulus 67 87 GPa 9.71752 12.6183 106 psi
Tensile Strength 140 160 MPa 20.3053 23.206 ksi
Young's Modulus 170 220 GPa 24.6564 31.9083 106 psi
Glass Temperature K °F
Latent Heat of Fusion 1320 1490 kJ/kg 567.495 640.581 BTU/lb
Maximum Service Temperature 1473 1773 K 2191.73 2731.73 °F
Melting Point 2661 2769 K 4330.13 4524.53 °F
Minimum Service Temperature 0 0 K -459.67 -459.67 °F
Specific Heat 673 1100 J/kg.K 0.520807 0.851244 BTU/lb.F
Thermal Conductivity 10 15 W/m.K 18.7203 28.0805 BTU.ft/h.ft2.F
Thermal Expansion 1.4 3.3 10-6/K 2.52 5.94 10-6/°F
Breakdown Potential 15 20 MV/m 381 508 V/mil
Dielectric Constant 9.6 10.4 9.6 10.4 NULL
Resistivity 1e+013 1e+016 10-8 ohm.m 1e+013 1e+016 10-8 ohm.m
Environmental Properties
  Resistance Factors
1=Poor 5=Excellent
Flammability 5
Fresh Water 5
Organic Solvents 5
Oxidation at 500C 5
Sea Water 5
Strong Acid 4
Strong Alkalis 3
UV 5
Wear 5
Weak Acid 5
Weak Alkalis 5

This data is provided subject to AZoM.com's terms and conditions. Data reproduced with permission of Granta Design Limited www.grantadesign.com and Ceram Research Limited www.ceram.co.uk

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