Technical Ceramics. Cemented Carbides. Composite Materials

Structural ceramics based on silicon nitride

Description

Due to the combination of high strength, hardness and fracture toughness parameters, the silicon nitride-based ceramic IFCIs demonstrate stable and reliable performance in severe roughing operations when high depth of cut and feed rates are used.

Applications

H Hardened, tool steels

H Chilled cast iron

S Refractory alloys

К Grey, malleable, high-strength cast iron grades

Physical and mechanical parameters

Parameter Material on the basis of silicon nitride
with an oxide additives with titanium nitride with titanium carbide
Density, g/cm³ 3,24 - 3,26 3,75 - 3,77 3,35 - 3,37
Microstructure

Копия Нитрид кремния с оксидными добавками.JPG

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Копия На основе нитрида кремния с нитридом титана.JPG

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Копия На основе нитрида кремния и карбида титана.JPG

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Transverse rupture strength, MPa 850 - 1050
560 - 630
550 - 670
Young modulus, GPa 310 - 320
310 - 320
310 - 330
Vickers’ hardness, GPa 16.0 - 17.5
15.5 - 16.2
19.0 - 19.5
Impact toughness, kJ•mˆ(-2) 6.0 - 7.0
5.5 - 6.0
6.0 - 6.5
Thermal conductivity, W mˆ(-1) x Кˆ(-1) 25 - 30
25 - 30
25 - 30
Coefficient of thermal expansion (CTE), 10ˆ(-6) x Кˆ(-1) 3.0 - 3.2
3.2 - 3.4
3.2 - 3.4