Silicon carbide (sic) ua yeeb yam hnav thiab corrosion tsis kam vim nws lub cev thiab tshuaj chemical.
Nyob rau hauv cov nqe lus ntawm kev hnav tsis kam, lub mohs hardness ntawm silicon carbide tuaj yeem ncav cuag 9.5, thib ob tsuas yog pob zeb diamond thiab boron nitride. Nws cov coj tsis kam yog sib npaug rau 266 zaug ntawm manganese steel thiab 1741 lub sij hawm uas ntawm siab chromium cam khwb cia hlau.
Nyob rau hauv cov nqe lus ntawm corrosion tsis kam, silicon carbide muaj cov tshuaj ruaj khov heev thiab ua kom pom tseeb zoo heev rau cov kua qaub muaj zog, thiab cov ntsev. Lub caij no, silicon carbide kuj muaj cov siab corrosion tau txais kev mob siab rau cov hlau thiab zinc, thiab cov pwm nyob hauv kev lag luam metallurgical.
Tam sim no, silicon carbide ua ke nrog superhard qauv thiab nws cov tshuaj lom neeg tau siv nyob rau hauv kev xaiv zoo nyob rau hauv cov kev ua haujlwm hnyav.
| khoom | Hnav Tsis kam | Corrosion Kuj | Kev ua haujlwm kub siab | Economic (ntev lub sij hawm) |
| Silicon Carbide | Tsis tshua muaj neeg | Tsis muaj zog heev | Zoo heev (<1600 ℃) | Siab |
| Alumina Ceramics | Siab | Muaj zog | Nruab nrab (<1200 ℃) | Nruab nrab |
| Hlau Alloy | Nruab nrab | Tsis muaj zog (xav tau txheej) | Tsis muaj zog (nquag ua rau oxidation) | Qaug |
Silicon Carbide Hnav-Resistant BlockPuas yog ib qho kev qhia tseem ceeb hauv Silicon Carbide cov khoom lag luam xws li cov khoom siv sib tsoo ntawm cov khoom sib tsoo los ntawm kev hnav sib tsoo thiab yog li rov ua cov nqi kho tshuab.
Cov hauv qab no yog kev sib piv ntawm silicon carbide hnav cov blocks thiab lwm yam kev tsoos cov khoom-resistant blocks:
| Hardness thiab hnav tsis kam | Silicon Carbide Hnav-Resistant Block | Tsoos cov ntaub ntawv |
| Hardness thiab hnav tsis kam | Mohs Hardness 9.5, Hnav Muaj Zog Hnav Tsis kam (Lub Neej nce los ntawm 5-10 zaug) | High Chromium Cam Khwb Xim Hlau Muaj tsawg Hardness (HRC 60 ~ 65), thiab Alumina Ceramics muaj kev sib tsoo |
| Corrosion Kuj | Tiv taus cov kua qaub muaj zog thiab alkalis | Cov hlau yuav nquag rau corrosion, thaum Alumina muaj qhov nruab nrab acid tsis kam |
| Kub Ceev | Kub tiv thaiv ntawm 1600 ℃, tsis oxidizing ntawm qhov kub | Hlau yog nquag rau deformation ntawm cov kub, thaum Alumina muaj qhov kub tsis kam ntawm 1200 ℃ |
| Thermal conductivity | 120 w / min k, tshav kub ceev tsis sib xws, thermal poob siab kuj | Hlau muaj zoo thermal conductivity tab sis ib txwm mus rau oxidation, thaum cov ceramics muaj cov thermal condition |
| Hais txog kev khwv nyiaj txiag | Ntev lifespan thiab tsawg tag nrho cov nqi | Cov hlau yuav tsum tau hloov ntau dua, ceramics yog cov nqi tsis yooj yim, thiab cov nqi ntev yog siab |
Lub sij hawm Post: Mar-18-2025