Silicon carbide (SiC) muaj kev tiv thaiv kev hnav thiab kev xeb zoo heev vim nws cov khoom siv lub cev thiab tshuaj lom neeg tshwj xeeb.
Hais txog kev hnav tsis kam, Mohs hardness ntawm silicon carbide tuaj yeem ncav cuag 9.5, thib ob tsuas yog pob zeb diamond thiab boron nitride. Nws qhov kev hnav tsis kam yog sib npaug rau 266 npaug ntawm manganese hlau thiab 1741 npaug ntawm high chromium cast iron.
Hais txog kev tiv thaiv corrosion, silicon carbide muaj kev ruaj khov tshuaj lom neeg siab heev thiab ua pov thawj zoo heev rau cov kua qaub, alkalis, thiab cov tshuaj ntsev. Lub caij no, silicon carbide kuj muaj kev tiv thaiv corrosion siab rau cov hlau molten xws li txhuas thiab zinc, thiab feem ntau siv rau hauv crucibles thiab pwm hauv kev lag luam metallurgical.
Tam sim no, silicon carbide ua ke nrog cov qauv superhard thiab nws cov tshuaj inertness tau siv dav hauv kev lag luam xws li kev tsuas, hlau, thiab tshuaj lom neeg, ua qhov kev xaiv khoom zoo tshaj plaws hauv qab cov xwm txheej ua haujlwm hnyav.
| cov khoom siv | hnav tsis kam | kev tiv thaiv xeb | kev ua haujlwm kub siab | Kev Lag Luam (ntev ntev) |
| Silicon carbide | Siab heev | Muaj zog heev | Zoo heev (<1600 ℃) | Siab |
| Alumina ceramics | Siab | Muaj zog | Qhov nruab nrab (<1200 ℃) | Nruab Nrab |
| Cov hlau sib xyaw | Nruab Nrab | Tsis muaj zog (yuav tsum tau muaj txheej) | Tsis muaj zog (nyuaj rau oxidation) | Tsis muaj zog |
Silicon carbide hnav-resistant blockyog ib qho kev faib tawm tseem ceeb hauv cov khoom silicon carbide. Cov khoom siv tiv taus thiab tiv taus corrosion ntawm silicon carbide ua rau nws siv dav hauv cov khoom siv sib tsoo xws li cov crushers mine thiab cov mills pob, txo cov khoom siv hloov pauv ntau zaus los ntawm kev hnav thiab yog li txo cov nqi kho tshuab.
Cov hauv qab no yog kev sib piv ntawm silicon carbide hnav-resistant blocks thiab lwm yam khoom siv ib txwm hnav-resistant blocks:
| Kev Nyuaj Siab thiab Kev Hnav Tsis kam | Silicon carbide hnav-resistant block | Cov ntaub ntawv ib txwm muaj |
| Kev Nyuaj Siab thiab Kev Hnav Tsis kam | Mohs hardness 9.5, tsis tshua muaj zog hnav tsis kam (lub neej nce 5-10 zaug) | Cov hlau chromium siab muaj qhov nyuaj tsawg (HRC 60 ~ 65), thiab alumina ceramics feem ntau tawg yooj yim. |
| Kev tiv thaiv xeb | Tiv taus cov kua qaub thiab alkalis muaj zog | Cov hlau muaj feem yuav xeb, thaum alumina muaj qhov nruab nrab acid tsis kam |
| Kev ruaj khov kub siab | Kub tsis kam ntawm 1600 ℃, tsis oxidizing ntawm qhov kub siab | Hlau yog qhov yooj yim rau deformation ntawm qhov kub siab, thaum alumina muaj qhov kub tsis kam ntawm tsuas yog 1200 ℃ |
| Kev ua kom sov tau zoo | 120 W/m · K, cua sov sai sai, tiv taus kev poob siab thermal | Hlau muaj cov thermal conductivity zoo tab sis nws yooj yim rau oxidation, thaum cov ceramics ib txwm muaj cov thermal conductivity tsis zoo |
| Kev Lag Luam | Lub neej ntev thiab tus nqi qis tag nrho | Cov hlau yuav tsum tau hloov ntau zaus, cov khoom siv av nplaum tsis yooj yim puas, thiab cov nqi mus sij hawm ntev yog siab |
Lub sijhawm tshaj tawm: Lub Peb Hlis-18-2025