Black Silicon Nitride Si3N4 Ceramic Pot High Temperature Resistant
Is silicon nitride a ceramic?
Silicon nitrides are a group of advanced engineering ceramics with high strength, fracture toughness, hardness, wear resistance and good chemical and thermal stability.
Silicon Nitride Ceramic:
Silicon nitride ceramic is an inorganic material ceramic that does not shrink when sintered. Silicon nitride is very strong,especially hot pressed silicon nitride, which is one of the hardest substances in the world.
Silicon Nitride Properties:
High hardness, high strength, wear resistance, corrosion resistance, high temperature(1200°), good thermal diffusivity, good thermal shock resistance(avoid the temperature changing rapidly), good insulativity, low density. The comprehensive properties are best in most of structure ceramic.
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Silicon nitride ceramic characteristics
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Property
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Item
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Data
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Unit
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Mechanical Characteristics
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color
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black/grey
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| density |
3.2
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g/cm3
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Bending Strength
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750
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MPa
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| Compressive Strength |
3800
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MPa
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| Elastic Modulus |
290
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GPa
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| Fracture Toughness |
7
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MPa m1/2
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| Weber Coefficient |
15
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m
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| Vickers Hardness |
1,700
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HV 0.5
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Thermal Characterics
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Coefficient of Line Thermal Expansion
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2
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10-6 K-1
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Thermal Conductivity
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20
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W/mK
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Thermal Shock Resistance (Put in Water)
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750
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ΔT °C
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Max Working Temperature(in air)
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1,300
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°C
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Electrical Characteristics
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Volume Resistance at 20°C
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>1014
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Ωcm
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Dielectric Strength
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10×106
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V/m
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Chemical Characteristics
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Nitric Acid (60%) 90°C
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1
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WT Loss mg/cm2/day
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Sulphuric Acid (95%) 95°C
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≒0.00
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Caustic Soda (30%) 80°C
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0.2
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