Cerium Oxide piv rau Aluminium Oxide Polishing Powder: Kev Tshawb Fawb Sib Piv Uas Muaj Peev Xwm
Hauv kev ua haujlwm precision hauv kev lag luam iav thiab optics, hmoov polishing yog cov khoom siv tseem ceeb uas txiav txim siab qhov zoo ntawm qhov chaw kawg, qhov ci ntsa iab, thiab qhov ceev ntawm qhov tsis xws luag.Cerium oxide (CeO₂)thiab txhuas oxide (Al₂O₃) yog ob yam khoom siv polishing uas siv ntau tshaj plaws, tab sis lawv txawv ntawm cov qauv khoom siv, cov txheej txheem polishing, qhov nyuaj, kev ua haujlwm zoo, thiab qhov cuam tshuam ntawm qhov chaw kawg. Yog li ntawd, kev xaiv cov hmoov polishing kom raug tsis tsuas yog cuam tshuam rau kev ua haujlwm zoo xwb tab sis kuj cuam tshuam ncaj qha rau qhov txiaj ntsig thiab tag nrho cov nqi ntawm cov khoom tiav. Cerium oxide, ua cov khoom siv av tsis tshua muaj, muaj lub xeev Ce³⁺ / Ce⁴⁺ reversible valence, ua rau nws tsim cov tshuaj lom neeg me ntsis thaum kov cov silicates hauv iav. Ib txheej txheej softening softening nyias heev tsim rau ntawm qhov chaw iav thaum lub sijhawm polishing, uas maj mam tshem tawm los ntawm kev ua ke ntawm lub polishing pad thiab kev txav mus los. Txoj kev tshem tawm "tshuaj lom neeg + tshuab" no hu ua CMP (Tshuaj lom neeg tshuab Polishing), uas yog qhov laj thawj tseem ceeb vim li cas cerium oxide polishing yog ceev, ua haujlwm zoo, thiab tsim cov qhov tsis zoo ntawm qhov chaw tsawg heev. Qhov sib piv, alumina yog cov khoom siv tshuab abrasive nrog Mohs hardness ntawm 9, thib ob tsuas yog corundum thiab pob zeb diamond. Cov txheej txheem polishing tsuas yog nyob ntawm cov npoo ntse, qhov tawv, thiab lub zog sab nraud ntawm cov khoom me me, uas sawv cev rau kev sib tsoo tshuab huv si yam tsis muaj txheej tshuaj mos. Yog li ntawd, cov txheej txheem tshem tawm yog ntxhib dua, yooj yim ua rau muaj qhov khawb tob dua, tshwj xeeb tshaj yog pom tseeb hauv kev polishing ntawm cov iav pob tshab.
Hais txog qhov nyuaj ntawm cov khoom siv, cerium oxide muaj Mohs hardness kwv yees li 6, ze rau ntawm iav, ua rau nws mos dua thaum kov cov khoom pob tshab thiab yuav luag tshem tawm cov khawb tob. Alumina, nrog rau qhov nyuaj ntawm 9, yog qhov tsim nyog rau cov khoom siv siab xws li hlau, ceramics, thiab kev txhuam thawj zaug ntawm sapphire. Txawm li cas los xij, thaum siv rau ntawm iav, qhov siab yuav tsum tau txo kom tsis txhob ua rau muaj qhov tiav matte, khawb, lossis txawm tias micro-cracks, ua rau qhov pom tseeb txo qis. Rau cov nto optical-grade, alumina tsis ruaj khov dua li cerium oxide. Hais txog qhov loj me ntawm cov khoom me me, ob qho tib si tuaj yeem ua tiav ntau yam ntawm 0.3–3 μm, tab sis cov khoom me me cerium oxide feem ntau yog puag ncig dua thiab muaj qhov faib me me ntawm cov khoom me me, ua rau lawv tsim nyog rau kev txhuam zoo; cov khoom me me alumina muaj cov npoo ntse dua, ua rau lawv tsim nyog rau kev txiav sai. Hais txog kev ncua,cerium oxide, tom qab hloov kho qhov chaw, tswj tau qhov zoo tshaj plaws hauv cov slurries polishing, tsis yooj yim rau agglomeration lossis sedimentation, thiab nws zoo heev rau kev ua haujlwm tas mus li ntev. Ntawm qhov tod tes, alumina muaj qhov ceev dua thiab settles sai dua, xav tau kev sib xyaw tas mus li, ua rau nws tsis haum rau cov kab ntau lawm.
Piv rau lawv cov kev ua haujlwm polishing, cerium oxide, vim muaj cov txheej tshuaj lom neeg, feem ntau ua tiav qhov siab dua ntawm kev tshem tawm cov khoom siv (MRR) thaum tswj hwm qhov zoo ntawm qhov chaw, qhia txog kev ruaj khov tshwj xeeb tshaj yog hauv kev ua cov iav loj, cov iav kho qhov muag, thiab cov phaj xov tooj ntawm tes. Txawm hais tias alumina muaj qhov nyuaj siab thiab qhov ceev tshem tawm sai, nws nyob ntawm lub zog sab nraud thiab lub kaum sab xis txiav, muaj lub qhov rais ua haujlwm nqaim, thiab yooj yim rau khawb txawm tias muaj siab me ntsis. Yog li ntawd, hauv kev tsim khoom loj, nws feem ntau tsis ruaj khov dua li cerium oxide, ua rau kev ua haujlwm qis dua. Qhov sib txawv ntawm qhov zoo ntawm qhov chaw yog qhov pom tseeb dua.Cerium oxidetuaj yeem ua tiav cov nto optical-grade nrog Ra < 1 nm, pob tshab siab, thiab yuav luag tsis muaj matte tiav, ua rau nws yog qhov kev xaiv zoo tshaj plaws rau cov lenses, laser optical Cheebtsam, sapphire qhov rais, thiab high-end iav. Alumina, vim yog kev sib tsoo tshuab ntshiab, feem ntau tsim ntau qib ntawm khawb, txheej kev ntxhov siab, thiab kev puas tsuaj hauv qab, ua rau muaj kev txo qis ntawm pob tshab. Rau cov txheej txheem xws li kev txhuam zaum kawg ntawm lub xov tooj ntawm tes iav, kev txhuam zoo ntawm lub koob yees duab, thiab kev txhuam ntawm semiconductor optical qhov rais, alumina tsis txaus thiab tsuas yog siv tau rau kev txhuam ntxhib thawj zaug.
Los ntawm qhov kev pom ntawm kev sib raug zoo ntawm cov txheej txheem, cerium oxide yooj yim hloov kho dua, tsis tshua muaj kev cuam tshuam rau cov yam ntxwv xws li pH, polishing pad, siab, thiab ceev, thiab yooj yim dua los kho. Ntawm qhov tod tes, alumina muaj kev cuam tshuam rau siab thiab kev sib hloov ceev; kev tswj tsis zoo me ntsis tuaj yeem ua rau khawb lossis tsis sib npaug ntawm cov nto, ua rau nws lub qhov rais ua haujlwm nqaim dua. Ntxiv mus, alumina daws sai sai, ua rau cov nqi kho dua siab dua thiab nyuaj dua hauv kev tswj hwm cov txheej txheem. Hais txog tus nqi, alumina pheej yig dua ib chav, thaum cerium oxide, ua cov khoom siv av tsis tshua muaj, kim dua me ntsis. Txawm li cas los xij, kev lag luam ua iav tsom mus rau tag nrho cov nqi ntawm kev muaj (TCO), piv txwv li, kev ua haujlwm zoo + cov txiaj ntsig + cov khoom siv + cov neeg ua haujlwm + kev poob haujlwm rov ua dua. Qhov xaus lus kawg feem ntau yog: thaum alumina pheej yig dua, nws cov nqi khawb thiab rov ua dua siab dua; thaum cerium oxide kim dua ib chav, nws muab kev ua haujlwm zoo dua, qhov tsis zoo qis dua, thiab cov txiaj ntsig siab dua, ua rau tag nrho cov nqi qis dua. Yog li ntawd, cov khoom siv optics, cov khoom siv hluav taws xob, thiab cov iav vaj tse feem ntau xaiv cerium oxide ua lawv cov hmoov txhuam hniav tseem ceeb.
Nyob rau hauv cov nqe lus ntawm daim ntawv thov scope,cerium oxideMuaj qhov zoo dua hauv yuav luag txhua qhov chaw uas xav tau kev pom tseeb, kev sib xws, thiab qhov kaj ntawm lub teeb, suav nrog lub xov tooj ntawm tes, lub koob yees duab, lub koob yees duab hauv tsheb, cov khoom siv laser, cov ntxaij vab tshaus microscope, iav quartz, qhov rais sapphire, thiab kev txhuam zoo ntawm cov iav vaj tse. Qhov sib txawv, alumina yog qhov tsim nyog rau cov hlau tsis pom kev, ceramics, hlau tsis xeb, pwm, iav hlau, thiab kev sib tsoo ntawm sapphire, qhov twg xav tau lub zog txiav siab. Hauv ntej: xaiv cerium oxide rau cov ntaub ntawv pob tshab, thiab alumina rau cov ntaub ntawv tawv; xaiv cerium oxide rau qhov zoo ntawm qhov chaw, thiab alumina rau kev txiav ceev.
Zuag qhia tag nrho, cerium oxide, nrog nws cov txheej txheem CMP tshwj xeeb, lub qhov rais ua haujlwm ruaj khov, kev ua haujlwm siab, thiab qhov chaw zoo, tau dhau los ua cov khoom siv polishing tsis tuaj yeem hloov pauv hauv kev lag luam iav thiab optics. Txawm hais tias alumina tsis kim thiab muaj zog heev, nws tsim nyog dua rau kev polishing cov khoom siv uas muaj zog heev, tsis pom tseeb xws li hlau thiab ceramics. Rau cov tuam txhab uas xav tau cov kab ntau lawm, ruaj khov thiab cov nqi qis, alumina tsis txaus rau qhov xav tau polishing kawg ntawm iav pob tshab, thaum cerium oxide yog qhov kev daws teeb meem zoo tshaj plaws rau kev ua tiav qhov chaw khoom kim heev.