Silicon nitride yog grey ceramic nrog lub siab tawg toughness, zoo heev thaum tshav kub kub poob tsis kam, thiab kuj impenetrable zog rau molten hlau.
Siv cov yam ntxwv no, nws yog siv rau hauv combustion engine qhov chaw xws li tsheb cav qhov chaw, vuam tshuab blowpipe nozzles, thiab lwm yam., tshwj xeeb tshaj yog qhov chaw uas yuav tsum tau siv nyob rau hauv hnyav ib puag ncig xws li overheating.
Nrog nws cov hnav tsis kam thiab siab txhua yam muaj zog, nws cov ntawv thov hauv cov kabmob cov menyuam qhov chaw, rotating ncej bearings thiab cov khoom siv semiconductor ntau lawm cov khoom seem txuas ntxiv.
| Lub cev muaj zog ntawm cov khoom siv silicon nitride | Silicon nitride (Sib) | |||
| Xim | Dub | |||
| Cov ntsiab lus tseem ceeb | - | |||
| Main feature | Lub teeb yuag, hnav tsis kam, kub tsis kam. | |||
| Kev siv tseem ceeb | Thaum tshav kub kub resistant qhov chaw, hnav resistant qhov chaw, corrosion resistant qhov chaw. | |||
| Qhov ntom | g/cc | 3.2 | ||
| Hydroscopicity | % | 0 | ||
| Mechanical yam ntxwv | Vickers hardness | GPa | 13.9 Nws | |
| Khoov zog | MPa | 500-700 | ||
| Compressive zog | MPa | 3500 | ||
| Young's modulus | GPA | 300 | ||
| Poisson tus piv | - | 0.25 | ||
| Fracture toughness | MPA · m 1/2 | 5-7 | ||
| Thermal yam ntxwv | Coefficient ntawm linear expansion | 40-400 ℃ | x10-6 ℃ | 2.6 |
| Thermal conductivity | 20 ° | W/(m·k) | 15-20 | |
| Tshwj xeeb kub | J/(kg·k)x103 |
| ||
| Hluav taws xob yam ntxwv | Volume resistivity | 20 ℃ | Ω·cm | > 1014 |
| Dielectric zog |
| KV/mm | 13 | |
| Dielectric tsis tu ncua |
| - |
| |
| Dielectric poob coefficient |
| x10-4 |
| |
| Cov yam ntxwv tshuaj | Nitric acid | 90 ℃ | Poob poob | <1.0<> |
| Vitriol | 95 ℃ | <0.4<> | ||
| Sodium hydroxide | 80 ℃ | <3.6<> | ||
