Nyob rau hauv thaj teb ntawm High-ent manufacturing thiab cov ntaub ntawv siab,High-purity aluminayog cov khoom siv tseem ceeb. Nws txoj kev coj dawb huv feem ntau ncav cuag 99.99% (4n qib) lossis txawm tias 99.999% (5N qib) lossis siab dua. Nrog nws lub cev zoo thiab tshuaj lom neeg, nws yog dav siv nyob rau hauv semiconductor, lub zog tshiab, kev kho mob, kev kho mob thiab lwm yam kev lag luam.
Yog li, dab tsi raws nraim yog high-purity alumina hmoov? Dab tsi yog nws qhov muaj txiaj ntsig? Nws npaj li cas thiab thov? Niaj hnub no, cia peb mus saib cov khoom no.
1. Dab tsi yog qhov siab-dawb huv alumina hmoov?
Lub ntsiab tivthaiv ntawm high-purity alumina hmoov yog alumina, tab sis tsis zoo li cov ntsiab lus txawv txawv thiab tsis tshua muaj neeg nyob rau theem PPM). Raws li lub purity, nws tuaj yeem faib ua:
• Qib 4N (99.99%)
• 5N Qib (99.999%)
• 6N qib (99.999%)
Qhov siab dua cov kev coj dawb huv, qhov zoo dua cov kev ua tau zoo thiab qhov siab dua daim ntawv thov.
2. Cov khoom lag luam ntawm cov hmoov zoo alumina
(1) ultra-siab hardness
Lub mohs hardness ntawm alumina yog siab npaum li 9, thib ob tsuas yog pob zeb diamond thiab silicon carbide. Nws tuaj yeem siv rau precision polishing, hnav-resistant txheej, thiab lwm yam.
(2) Cov Kub Kub Kub Kuj
Lub ntsiab lus melting yog hais txog 2050 degree. Nws tuaj yeem nyob ruaj khov ib puag ncig kub thiab yog qhov tsim nyog rau cov ntaub ntawv refractory, ib qho kev sib xyaw ua ke, thiab lwm yam.
(3) rwb thaiv tsev zoo heev
Nws muaj cov khoom zoo resistivity thiab zoo dielectric cov khoom, ua rau nws cov khoom zoo rau hluav taws xob sib xyaw thiab kev sib xyaw ua ke.
(4) muaj zog tshuaj ruaj khov
Nws yog resistant rau kua qaub thiab alkali corrosion thiab tsis yooj yim rau decompose txawm nyob rau hauv muaj zog acid thiab alkali ib puag ncig. Nws yog qhov tsim nyog rau tshuaj, biomedical thiab lwm daim teb.
(5) cov khoom kho tshiab
Kev loj-purity alumina tuaj yeem ua rau pob tshab ceramics rau lasers, qhov rais infrared, coj substrates, thiab lwm yam.
3. Yuav ua li cas yog high-purity alumina hmoov npaj?
(1) Cawv ntsev Hydrolysis txoj kev (siab purity 5n qib lossis siab dua)
Siv high-purity aluminium alkoxide li cov khoom siv raw, hydrolysis tsim kom muaj ultra-nplua high-purity al2o3, uas yog haum rau semiconductor-cov ntawv thov.
(2) hloov cov txheej txheem Bayer (4N qib kawm tau)
Cov txheej txheem tsooses pas dej Bayer pas dej bauxite, thiab tom qab ntawd muab cov txheej txheem sib pauv, recrystallization thiab lwm cov txheej txheem los tshem tawm impurities. Nws muaj tus nqi qis thiab yog haum rau kev tsim khoom loj.
(3) ammonium sulfate txoj kev
Los ntawm cov tshuaj tiv thaiv ntawm ammonium sulfate thiab txhuas cov ntsev, ntau yam crystallization thiab pryification, nws yog qhov tsim nyog rau kev npaj ntawm high-purity ultra-nplua hmoov.
(4) lub txim taws ntshav plasma plasma plasma (nanoscale npaj)
Nws yog siv los tsim nano-siab-purity alumina, nrog finer particle loj thiab loj tshwj xeeb thaj chaw.
4. Daim ntawv thov teb ntawm cov hmoov ntau alumina
(1) LED thiab semiconductor kev lag luam
• Sapphire substrate (ib leeg siv lead ua al₂o₃) yog cov khoom tseem ceeb rau cov chips. Piv txwv li, Muaj siab purity alumina hmoov rau sapphire.
• Siv nyob rau hauv semiconductor ntim, muab cov khoom siv sib xyaw ua ke, thiab lwm yam.
(2) roj teeb hluav taws xob tshiab
• Lithium roj teeb txheej, txhim kho cov kub ua tsis kam thiab electrolyte wettability, thiab txhim kho kev nyab xeeb.
• Tshawb nrhiav cov khoom rau cov khoom siv hluav taws xob.
(3) Precision polishing (CMP)
• Ultra-precision polishing ntawm silicon wafers, kho qhov muag iav, thiab tawv disk platters.
(4) pob tshab ceramics
• Cov mob siab siab-siab
(5) biomedicine
• Qhov Ntau Lub Zog ntawm kev sib koom ua ke thiab kho hniav rov kho dua tshiab, nrog biocompatibility zoo.
(6) Lwm cov ntawv thov siab kawg
• Aerospace kub tiv thaiv cov txheej txheem kub, catalyst cov nqa khoom, cov ntaub ntawv siab refractory, thiab lwm yam.
Txawm yogHigh-purity aluminaHmoov tsis yog cov nrov xws li graphene thiab carbon nanotubes, nws plays ib tug irreplacable lub luag haujlwm hauv kev lag luam qib siab niaj hnub. Los ntawm sapphire iav hauv txawb xov tooj screens rau roj teeb separators hauv cov hluav taws xob hauv hluav taws xob rau kev sib koom ua ke ua ke, nws yog qhov txhia chaw. Yav tom ntej, nrog kev nce qib ntawm cov ntaub ntawv kev tshawb fawb, daim ntawv thov cov ciaj ntawm cov hmoov loj ntawm cov hmoov loj yuav txuas ntxiv mus nthuav dav.