Brown aluminium oxide thiab silicon carbide yog ob cov ntaub ntawv muaj cov ntaub ntawv, siv nyob rau hauv abrasives, ripractories thiab lwm yam ntaub ntawv siab. Muaj ntau qhov sib txawv ntawm lawv cov muaj pes tsawg leeg, cov yam ntxwv thiab daim ntawv thov ntau. Cov hauv qab no yog cov ncauj lus qhia ntxaws ntxiv:
1. Muaj pes tsawg leeg
Xim av fused alumina:
Cov khoom tseem ceeb: alumina (al₂o₃), cov ntsiab lus yog li ntawm 94%. Cov khoom ntxiv ntxiv: muaj ib qho me me ntawm hlau oxide (Fe₂o₃) thiab silicon oxide (sitio₂). Cov khoom siv raw: bauxite thiab coke yog lub ntsiab raw cov ntaub ntawv, smelted nyob rau hauv ib lub cub hluav taws xob hauv hluav taws xob ntawm qhov kub thiab txias.
Silicon Carbide:
Cov khoom tseem ceeb: Silicon carbide (sic), lub purity tuaj yeem ncav cuag ntau dua li 98% nyob ntawm cov qhab nia. Cov khoom siv raw: Quartz xuab zeb thiab roj av (lossis anthracite) yog cov ntaub ntawv nyoos, smelted nyob rau hauv lub siab-kub tiv thaiv kub.
2. Kev sib piv ntawm lub cev thiab tshuaj lom neeg
|
Cov yam ntxwv |
Xim av Aluminium Oxide |
Silicon Carbide |
|
Kev nyuaj |
Siab dua (mohs hardness txog 9) |
Siab heev (mohs hardness 9. {5-10) |
|
Kev muaj zog |
Siab dua, kev cuam tshuam zoo tsis kam |
Nkig, kev cuam tshuam tsis zoo |
|
Cov Kub Kub Kuj |
siab dua, kev cuam tshuam zoo tsis kam |
Zoo heev (resistant rau ntau tshaj 2000 degree) |
|
Corrosion Kuj |
Feem ntau, rhiab rau acidic thiab alkaline tshuaj |
Zoo heev, tiv taus cov kua qaub, alkali thiab oxidative ib puag ncig |
|
Thermal conductivity |
Raws li ib txwm |
Zoo heev (siab thermal conductivity khoom) |
|
Cov Khoom Siv Ua Si |
Tsis-conductive |
Cov khoom siv semiconductor, uas coj hluav taws xob |
3. Kev sib piv ntawm cov ntawv thov
Cov ntawv thov tseem ceeb ntawm cov xim av txhuas oxide:
Kev lag luam abrasive: siv los tsim cov kev sib tsoo cov log, sib tsoo hau, Sandpaper, sib tsoo cov muab tshuaj txhuam, thiab lwm yam.
Refractory cov khoom siv: siv raws li kev sib sau los yog hmoov zoo hauv refractory cib thiab cas, haum rau nruab nrab thiab ib puag ncig tsawg.
Cov ntaub ntawv sau polishing: Siv rau hauv kev kho cov hlau ua ke, iav, thiab ceramics.
Sandblasting: Haum rau nto xeb tshem tawm, descaling, thiab saum npoo uas muaj rougening.
Cov ntawv thov MAIN ntawm Silicon Carbide:
Kev lag luam Abrasive: siv rau kev txiav cov ntaub ntawv nyuaj xws li pob zeb, iav, ceramics, thiab cemented carbide.
Refractory cov khoom siv: siv rau cov hluav taws xob hluav taws xob kub thiab regractory cib, haum rau qhov kub thiab txias thiab xeb ib puag ncig.
Thermal cov ntaub ntawv tshaj tawm: siv rau siab thermal condosite cov ntaub ntawv xws li tshav kub kub thiab cua sov kev tswj hwm ntawm cov khoom siv hluav taws xob.
Kev lag luam semiconductor: Kev tsim hluav taws xob hluav taws xob cov cuab yeej hluav taws xob xws li diodes, teej, thiab inverers rau hluav taws xob tsheb.
Tshuaj Kev Lag Luam: Siv ua ob lub vias rau cov khoom siv tshuaj lom neeg, tiv taus cov kua qaub thiab alkali corrosion.
4. Tus nqi thiab kev lag luam
Brown Aluminium oxide: Tus nqi qis, haum rau kev siv loj-teev, tshwj xeeb tshaj yog nyob rau hauv cov ntawv thov kev nruj thiab nruab nrab hardness. Silicon carbide: tus nqi siab, tshwj xeeb tshaj yog cov siab picicon carbide, siv hauv kev ua haujlwm siab thiab kub-teb.
5. Xaiv lub hauv paus
Yog tias yuav tsum muaj kev nyuaj thiab tus nqi qis yuav tsum tau: xaiv xim av fused alumina, xws li hlau polishing, dav dav cov ntaub ntawv thiab lwm yam kev siv. Yog tias muaj kev nyuaj siab, kub tsis kam, corrosion tsis xav tau: Xaiv cov khoom siv nyuaj, cov khoom siv cua sov kub.
Lub ntsiab
Xim av txhuas oxide thiab silicon carbide muaj lawv tus kheej zoo thiab qhov tsis zoo. Cov kev xaiv yuav tsum tau raws li cov ntaub ntawv thov muaj: xim av fused alumina yog qhov tsim nyog rau cov xwm txheej nrog kev siv nyiaj siab thiab pob peev nyiaj. Silicon carbide ua tau zoo dua nyob rau hauv ib puag ncig heev hauv ib puag ncig (xws li kub siab, corrosion, thiab siab thermal conductivity yuav tsum tau).
