Silicon nitride ndi silicon carbide ndi amphamvu kwambiri covalent bond mankhwala, ali ndi katundu ofanana thupi ndi mankhwala, silicon nitride pamodzi ndi silicon carbide mankhwala kukana kutentha, kukana dzimbiri, kukana kuvala, kukana kukokoloka, kukana makutidwe ndi okosijeni ndi mndandanda wa zinthu zabwino kwambiri. Silicon nitride ndi silicon carbide monga apamwamba kalasi zipangizo refractory mu atmospheres osiyanasiyana kutentha ntchito yachibadwa akhoza kufika 1500 ℃ kapena choncho, chimagwiritsidwa ntchito ziwiya zadothi, non-ferrous zitsulo, chitsulo ndi zitsulo zitsulo, ufa zitsulo, makampani mankhwala ndi mafakitale ena.
Silicon nitride ophatikizidwa ndi silicon carbide zakuthupi ndi zitsulo zopanda chitsulo sizimalowa, ndipo zimakhala ndi zinthu zabwino zotchinjiriza, motero zimagwiritsidwa ntchito kwambiri popanga zitsulo zopanda chitsulo monga aluminiyamu, mkuwa ndi nthaka, makamaka zinthu zabwino kwambiri kupanga ma electrolytic cell side lining njerwa.
| Kanthu | Firebrick index | Kufotokozera za Kiln | Mlozera wazinthu zowoneka bwino |
| Zowoneka porosity(%） | <16 | <16 | <14 |
| Kuchulukana kwakukulu(g/cm3） | 2 2.65 | 2 2.65 | 2 2.68 |
| Compressive mphamvu pa firiji(MPa） | 2 160 | 2 170 | 2 180 |
| Kupinda mphamvu firiji(1400X:） MPa | 2 40 | 2 45 | 2 45 |
| Kutentha kwakukulu kopindika mphamvu(1400r） MPa | 2 50 | 2 50 | 2 50 |
| Coefficient ya kukula kwa kutentha(Mtengo wa 110CTC）xioVC | <4.18 | <4.18 | <4.18 |
| Thermal conductivity(1100C） | 216 | 2 16 | 216 |
| Zotsutsa(°C ） | 1800 | 1800 | 1800 |
| 0.2 MPa Kufewetsa kutentha pansi pa katundu(X:） | 1600 | 1600 | > 1700 |
| Kutentha kwakukulu kwa ntchito(°C） | 1550 | 1550 | 1550 |
