Dub Silicon Carbide Powder: Grit Qib, Khoom thiab Hlau Sawing
Tso lus
Dub Silicon Carbide yog dab tsi thiab nws ua li cas
Dub silicon carbide yog cov khoom siv hluavtaws uas tsim los ntawm kev sib tsoo ntawm cov xuab zeb quartz, roj av coke thiab silica nyob rau hauv lub qhov cub hluav taws xob. Lub cub tawg mus txog qhov kub thiab txias txaus los tsim alpha silicon carbide crystals, uas tom qab ntawd crushed, milled, purified thiab graded. Cov xim dub yog los ntawm cov seem uas tsis muaj cov pa roj carbon monoxide thiab hlau nyob hauv cov khoom siv lead ua, thiab nws txawv cov khoom siv los ntawm cov xim ntsuab, qib purity siab dua siv rau kev sib tsoo precision.
Daim ntawv hmoov yog tsim los ntawm milling cov crude ingot thiab faib cov resulting grain rau hauv nruj me ntsis tswj particle loj. Abrasive hmoov yog micron- cov khoom qib: qib kev faib tawm yog nruj, thiab cov khoom loj loj yuav tsum tsis txhob tshwm sim, vim hais tias ib qho ntxhib nplej tuaj yeem khawb ib lub semiconductor wafer lossis tau qhab nia ua tiav.
Qib thiab Grit Classification
Silicon carbide abrasive hmoov yog cais los ntawm kev lees paub ntawm cov qoob loo loj dua li ntawm chemistry ib leeg. Macrogrits thiab microgrits raug xaiv nyob rau hauv F series rau bonded abrasives thiab nyob rau hauv P series rau coated abrasives, thiab lub teb chaws cov qauv tsom rau tib qhov luaj li cas.
| Qhov system | Ntau yam | Kev siv tus qauv | Hom kev siv |
|---|---|---|---|
| F series macrogrits | F4 rau F220 | ISO 8486-1, GB/T 2481.1 | Bonded log, blasting, refractory grain |
| F series microgrits | F230 rau F1200 | ISO 8486-2 | Kev ua tiav zoo, lapping, polishing |
| P series | P12 rau P2500 | TS EN ISO 6344 Cov | Coated abrasives, ntawv thiab siv |
| Micron hmoov | Sub-micron rau kaum micrometers | Laser diffraction tswj | Hlau sawing slurry, precision lapping |
Qhov loj me me faib yog txheeb xyuas los ntawm sieving rau macrogrits thiab los ntawm laser diffraction rau microgrits, thiab qhov nruab nrab particle loj, los yog D50, yog qhia rau txhua batch. Particle zoo kuj tseem ceeb: blocky, equiaxed nplej txiav ntau uniformly tshaj elongated sawv daws yuav, thiab zoo sib xws yog dab tsi ua rau txiav efficiency thiab nto zoo ruaj khov los ntawm ib tug xa mus rau lwm.
Hom tshuaj thiab lub cev muaj zog
| Khoom | Yam nqi |
|---|---|
| Cov ntsiab lus ntawm Silicon carbide | 98.0 feem pua |
| Dawb carbon | 0.30% siab tshaj |
| Hlau oxide | 0.60% siab tshaj |
| Crystal qauv | Hexagonal alpha silicon carbide |
| Mohs hardness | 9.5 |
| Khob hardness | Txog 2500 kg ib square millimeter |
| Tshwj xeeb lub ntiajteb txawj nqus | 3.1-3.2g / cm3 |
| Qhov ntom ntom | Txog 1.2 txog 1.6 g / cm3 nyob ntawm qhov loj me |
| Thermal stability | Khaws hardness ntawm qhov kub thiab txias, dissociates saum 2700 degrees Celsius |
Silicon cov ntsiab lus nyob rau hauv cov nplej tswj lub hardness ntawm cov khoom, thiab cov ntsiab lus hlau yog khaws cia tsawg vim hais tias hlau raug tshem tawm los ntawm sib nqus sib cais thiab, rau cov qib zoo tshaj, los ntawm acid ntxuav. Cov hmoov xa tuaj qhuav thiab tsis ntws, ntim rau hauv cov dej noo- cov hnab thaiv thiab kaw kom khaws cov khoom faib loj.
Hlau Sawing ntawm Silicon thiab Compound Semiconductors
Ib qho ntawm kev siv loj tshaj plaws ntawm cov hmoov dub silicon carbide yog cov slicing ntawm brittle semiconductor khoom. Slurry raws hlau saws nqa cov abrasive rau hauv qhov txiav, qhov twg cov nplej ua cov txiav ua haujlwm thiab cov hlau tsuas yog thauj nws. Cov txheej txheem yog siv rau 3 nti mus rau 12 nti monocrystalline silicon, polysilicon, quartz siv lead ua thiab cov khoom siv semiconductor xws li gallium arsenide.
Txiav efficiency- nyuaj, zoo graded grain tshem tawm cov khoom sai dua thaum khaws cov hlau tsis pub dhau qhov txwv.
Nto zoo- nqaim particle loj faib txo subsurface puas, uas tseem ceeb rau cov polished wafers ua raws.
Kerf tswj- Cov qoob loo zoo ib yam thiab cov duab tuav lub kerf dav ruaj khov, tiv thaiv cov txiaj ntsig ntawm cov khoom siv kim kim.
Slurry stability- tswj qhov chaw chemistry khaws cov abrasive tshem tawm thiab tsis txhob nyob hauv lub tank slurry.
Tib qib hmoov pab lapping ntawm quartz, ceramics thiab sapphire, thiab sib tsoo ntawm cov alloys nyuaj uas cov cuab yeej pob zeb diamond yuav tsis muaj nyiaj txiag.
Abrasive, Refractory thiab Metallurgical Applications
Bonded thiab coated abrasives- sib tsoo log, ntu, siv, cov ntaub ntawv thiab discs rau cam khwb cia hlau, tsis yog -ferrous hlau, pob zeb, iav thiab ceramics.
Blasting thiab nto npaj- ntxhib blasting media rau descaling thiab etching.
Refractories- cov rooj tog zaum, saggers, crucibles thiab hnav- cov ntaub uas tiv taus uas yuav tsum tiv thaiv thermal shock.
metallurgy- deoxidising tus neeg sawv cev thiab alloy ntxiv rau hauv hlau thiab steelmaking, feem ntau muab los ua briquettes.
Ceramics thiab composites- cov khoom siv hauv tsheb, cov lim dej ceramic, thiab cov khoom siv ntxiv rau kev hnav -cov khoom siv tiv thaiv.
Electronics thiab photovoltaic- wafer slicing thiab lapping lub luag haujlwm tau piav qhia saum toj no.
Ordering thiab Quality Control
Ib qho kev txiav txim xav tau plaub daim ntaub ntawv kom raug nqi kom raug: lub grit lossis micron tsim, kom muaj nuj nqis, qhov kawg siv, thiab qhov yuav tsum tau muaj qhov siab tshaj plaws particle loj. Los ntawm qhov ntawd, tus neeg muag khoom kho cov qib, xaiv txoj kev faib tawm thiab lees paub cov batch los ntawm laser diffraction lossis sieve tsom. Cov kev tswj niaj hnub muaj xws li tshuaj ntsuam xyuas tshuaj rau silicon carbide, cov pa roj carbon monoxide dawb thiab hlau oxide, sib nqus sib nqus kom tshem tawm cov hlau tsis huv, tswj cov dej noo ua ntej ntim thiab khaws cov qauv ntawm txhua pawg. Standard packing yog 25 kilogram noo noo-barrier hnab nyob rau hauv ib tonne bulk hnab los yog nyob rau hauv pallets, uas ua rau cov qib zoo qhuav thiab tsis zoo los ntawm ntev hiav txwv freight.
Dub silicon carbide yog cov neeg ua haujlwm kev lag luam ntawm tsev neeg silicon carbide: qis purity dua li qib ntsuab tab sis tawv dua, thiab yog li nws nyiam qhov twg los xij ntawm kev txiav ntug ntev thiab cov khoom ntim siab ntau dua li qhov ua tau zoo tshaj plaws.
Cov lus nug nquag
Q: Qhov txawv ntawm dub thiab ntsuab silicon carbide yog dab tsi?
Dub silicon carbide muaj cov ntsiab lus ntawm silicon carbide qis, feem ntau yog 98 feem pua los yog ntau dua, thiab yog cov tawv thiab tsis muaj zog, thaum ntsuab silicon carbide yog ib qho purity dua, ntau friable grain nyiam rau precision sib tsoo ntawm cov ntaub ntawv nyuaj.
Q: Yuav ua li cas yog lub grit loj guaranteed?
Txhua batch tau muab faib ua tus qauv loj, tom qab ntawd txheeb xyuas los ntawm kev tshuaj xyuas sieve rau macrogrits lossis laser diffraction rau microgrits, nrog rau qhov loj me me qhia hauv cov ntaub ntawv tshuaj xyuas.
Q: Vim li cas cov duab particle tseem ceeb tshaj qhov loj ib leeg?
Blocky nplej txiav tusyees thiab tuav ib tug kerf uas yuav kwv yees tau, thaum elongated los yog flaky nplej ua rau tsis sib xws txiav, siab dua hlau hnav thiab tsis zoo nto tag.
Q: Puas yog dub silicon carbide haum rau hnub ci wafer hlais?
Yog lawm. Cov qib zoo yog siv rau hauv slurry hlau sawing ntawm monocrystalline thiab polycrystalline silicon nrog rau quartz thiab compound semiconductor crystals.
Q: Dab tsi hlau thiab cov pa roj carbon monoxide txwv tsis pub muaj?
Cov khoom siv qib abrasive yog ib txwm muab cov pa roj carbon dawb ntawm 0.30 feem pua siab tshaj plaws thiab cov hlau oxide ntawm 0.60 feem pua siab tshaj plaws, nrog sib nqus sib cais thiab cov kua qaub ntxuav siv kom ncav cuag cov qib.
Q: Cov hmoov ntim li cas rau kev xa tawm?
Cov hmoov yog qhuav, kaw rau hauv cov dej noo- cov hnab thaiv, thiab ntim rau hauv 25 kilogram units ntawm pallets lossis hauv ib lub hnab ntim loj kom cov khoom sib cais nyob twj ywm.
