Silicon carbide ke mofuta oa carbide ea maiketsetso e nang le molek'hule ea SiC.Ha li na le matla, silica le carbon hangata li etsoa ka mocheso o phahameng ho feta 2000°C.Silicon carbide e na le tekano ea theoretical ea 3.18g/cm3, boima ba Mohs bo latelang taemane, le microhardness ea 3300kg/mm3 pakeng tsa 9.2 le 9.8.Ka lebaka la boima ba eona bo phahameng le khanyetso e phahameng ea ho apara, e na le litšoaneleho tsa ho hanyetsa mocheso o phahameng 'me e sebelisoa bakeng sa mefuta e sa tšoaneng ea likarolo tsa mechine e sa senyeheng, ea ho senya le e phahameng ea mocheso.Ke mofuta o mocha oa theknoloji ea ceramic e sa tsoeng.
1, Lintho tsa lik'hemik'hale.
(1) Khanyetso ea oxidation: Ha thepa ea silicon carbide e futhumatsoa ho 1300 ° C moeeng, lesela la tšireletso la silicon dioxide le qala ho hlahisoa holim'a kristale ea eona ea silicon carbide.Ka ho teteka ha lera le sireletsang, silicon carbide e ka hare e tsoela pele ho oxidize, e le hore silicon carbide e be le khanyetso e ntle ea oxidation.Ha mocheso o fihla ho feta 1900K(1627 ° C), filimi e sireletsang ea silicon dioxide e qala ho senyeha, 'me oxidation ea silicon carbide e matlafatsoa, ka hona 1900K ke mocheso o sebetsang oa silicon carbide sebakeng sa oxidizing.
(2) Acid le alkali resistance: ka lebaka la karolo ea silicon dioxide e sireletsang filimi, silicon carbide e na le thepa ea karolo ea silicon dioxide filimi e sireletsang.
2, Lintho tsa 'mele le tsa mochini.
(1) Boima: Boima ba likaroloana tsa likristale tse fapaneng tsa silicon carbide li haufi haholo, ka kakaretso li nkuoa e le 3.20g/mm3, 'me boima ba tlhaho ba silicon carbide abrasives bo pakeng tsa 1.2-1.6g/mm3, ho latela boholo ba karoloana. sebopeho sa boholo ba phatsa le sebopeho sa boholo ba phatsa.
(2) Hardness: The Mohs hardness ea silicon carbide ke 9.2, micro-density ea Wessler ke 3000-3300kg / mm2, boima ba Knopp ke 2670-2815kg / mm, abrasive e phahame ho feta corundum, haufi le daemane, cubic. boron nitride le boron carbide.
(3) Thermal conductivity: lihlahisoa tsa silicon carbide li na le conductivity e phahameng ea mocheso, coefficient e nyenyane ea ho atolosa mocheso, ho hanyetsa mocheso o phahameng oa mocheso, 'me ke lisebelisoa tsa boleng bo phahameng ba refractory.
3, thepa ea motlakase.
| Ntho | Yuniti | Lintlha | Lintlha | Lintlha | Lintlha | Lintlha |
| RBsic(sic) | NBSiC | SSiC | RSiC | OSiC | ||
| Likahare tsa SiC | % | 85 | 76 | 99 | ≥99 | ≥90 |
| Likahare tsa silicon mahala | % | 15 | 0 | 0 | 0 | 0 |
| Mocheso o moholo oa tšebeletso | ℃ | 1380 | 1450 | 1650 | 1620 | 1400 |
| Botenya | g/cm^3 | 3.02 | 2.75-2,85 | 3.08-3.16 | 2.65-2,75 | 2.75-2,85 |
| Porosity e bulehileng | % | 0 | 13-15 | 0 | 15-18 | 7-8 |
| Matla a ho koba 20 ℃ | Mpa | 250 | 160 | 380 | 100 | / |
| Matla a ho koba 1200 ℃ | Mpa | 280 | 180 | 400 | 120 | / |
| Modulus ea elasticity 20 ℃ | GPA | 330 | 580 | 420 | 240 | / |
| Modulus ea elasticity 1200 ℃ | GPA | 300 | / | / | 200 | / |
| Thermal conductivity 1200 ℃ | W/mk | 45 | 19.6 | 100-120 | 36.6 | / |
| Coefficient ea ho atolosa thermale | K^-lx10^-8 | 4.5 | 4.7 | 4.1 | 4.69 | / |
| HV | kg/m^m2 | 2115 | / | 2800 | / | / |
