Cerium Oxide vs. Aluminum Oxide Polishing Powder: Ongororo Yakakwana Yekuenzanisa
Mukugadzira machira nemazvo mumaindasitiri egirazi neoptics, upfu hwekupukuta chinhu chakakosha chinosarudza mhando yepamusoro, kupenya, uye chiyero chekukanganisa.Cerium oxide (CeO₂)uye aluminium oxide (Al₂O₃) ndidzo mbiri dzinonyanya kushandiswa pakupukuta, asi dzakasiyana zvakanyanya muchimiro chezvinhu, mashandiro ekupukuta, kuomarara, kushanda zvakanaka, uye mhedzisiro yekupedzisira pamusoro. Nokudaro, kusarudzwa kwakakodzera kwepolish powder hakungokanganisi chete kushanda zvakanaka kwekugadzirisa asiwo kunokanganisa zvakananga goho uye mutengo wese wechigadzirwa chapera. Cerium oxide, sechinhu chisingawanzo kuwanikwa, ine Ce³⁺/Ce⁴⁺ reversible valence state, zvichiita kuti ikwanise kugadzira makemikari mashoma kana yasangana ne silicates mugirazi. Layer yakatetepa kwazvo inoumbwa pamusoro pegirazi panguva yekupukuta, iyo inobviswa zvinyoro nyoro nekushanda kwakabatana kwepolish pad uye kufamba kwemechanical. Iyi nzira yekubvisa composite ye "chemical + mechanical" inozivikanwa seCMP (Chemical Mechanical Polishing), inova ndiyo chikonzero chikuru nei cerium oxide polishing ichikurumidza, inoshanda, uye ichiburitsa zvikanganiso zvishoma pamusoro. Kusiyana neizvi, alumina imhando yechinyakare yemechanical abrasive ine kuomarara kweMohs kwe9, yechipiri kune corundum nedhaimani. Maitiro ekupukuta anoenderana zvachose nemipendero yakapinza, kuomarara, uye simba rekunze rezvikamu, zvichimiririra kukuya kwakajairika kwemuchina pasina jira rinonyorovesa remakemikari. Nokudaro, maitiro ekubvisa acho akaomarara, zvichikonzera kukwenya kwakadzama, kunyanya kuoneka pakupukuta girazi rinoonekera.
Kana tichitaura nezvekuoma kwezvinhu, cerium oxide ine kuomarara kweMohs kweinenge 6, pedyo negirazi, zvichiita kuti ive nyoro kana ikabatana nezvinhu zvinopenya uye inenge ichibvisa kukwenya kwakadzika. Alumina, ine kuomarara kwe9, yakakodzera zvinhu zvinoomarara zvakanyanya zvakaita sesimbi, ceramics, uye kukwenya kwekutanga kwesafire. Zvisinei, kana ikashandiswa pagirazi, kumanikidzwa kunofanira kuderedzwa kudzivirira kukonzera matte finish, kukwenya, kana kutoita ma micro-cracks, zvichikonzera kudzikira kwekupenya. Kune nzvimbo dze optical-grade, alumina haina kugadzikana zvakanyanya kupfuura cerium oxide. Nezvehukuru hwe particles, ese anogona kusvika pa 0.3–3 μm, asi cerium oxide particles dzinowanzo tenderera uye dzine saizi yakatetepa ye particles, zvichiita kuti dzive dzakakodzera kukwenya zvakanaka; zvidimbu zve alumina zvine mipendero yakapinza, zvichiita kuti dzive dzakakodzera kucheka nekukurumidza. Kana tichitaura nezvekumisikidzwa,cerium oxideMushure mekugadzirisa pamusoro, inochengetedza kupararira kwakanaka mu slurry yekupukuta, haiwanzo sangana kana kudonha, uye yakakodzera kugadziriswa kwenguva refu. Kune rumwe rutivi, Alumina ine huwandu hwakanyanya uye inogara nekukurumidza, ichida kusanganiswa nguva dzose, zvichiita kuti isakodzere kugadzirwa otomatiki.
Kana tichienzanisa kushanda kwavo pakupukuta, cerium oxide, nekuda kwekuvapo kwechikamu chemakemikari, inowanzoita kuti zvinhu zvibviswe zvakanyanya (MRR) uku ichiramba iine hunhu huri nani pamusoro, ichiratidza kugadzikana kunyanya mukugadzirwa kwegirazi renzvimbo yakakura, magirazi emaziso, uye ma cover plates efoni. Kunyange zvazvo alumina ine kuomarara kwakanyanya uye inokurumidza kubviswa, inoenderana zvakanyanya nesimba rekunze uye kona yekucheka, ine hwindo rakamanikana rekuita, uye inogona kukwenywa kunyangwe paine kumanikidzwa kwakanyanya. Nokudaro, mukugadzirwa kwayo, inowanzova isina kugadzikana kupfuura cerium oxide, zvichikonzera kushanda kwakaderera. Musiyano wehunhu hwepamusoro unotonyanya kuoneka.Cerium oxideinogona kuwana nzvimbo dzine giredhi reoptical neRa < 1 nm, kupenya kwakanyanya, uye isina matte finish, zvichiita kuti ive sarudzo inofarirwa nemalenzi, laser optical components, mahwindo esapphire, uye magirazi emhando yepamusoro. Alumina, nekuda kwekukuya kwemuchina, inowanzo buritsa mavanga akasiyana-siyana, stress layers, uye kukuvara kwepasi pevhu, zvichikonzera kudzikira kukuru kwekupenya. Pamaitiro akadai sekupukuta kwekupedzisira kwegirazi refoni, kupukuta kwakanaka kwemakamera, uye kupukuta kwemahwindo e semiconductor optical, alumina haina kukwana uye inogona kungoshandiswa chete pakupukuta kwekutanga.
Kubva pakuona kwekuenderana kwemaitiro, cerium oxide inochinjika zviri nyore, hainyanyi kukanganiswa nematanho akadai se pH, polishing pad, pressure, uye kumhanya, uye iri nyore kugadzirisa. Kune rumwe rutivi, Alumina inonyanya kukanganiswa nekumanikidzwa uye kumhanya kwekutenderera; kusadzora kushoma kunogona kukonzera kukwenya kana nzvimbo dzisina kuenzana, zvichiita kuti hwindo rayo rekugadzirisa riite zvishoma. Uyezve, alumina inogadzikana nekukurumidza, zvichikonzera mari yakawanda yekugadzirisa uye kuoma kukuru mukutarisira maitiro. Panyaya yemutengo, alumina zvechokwadi yakachipa payuniti, nepo cerium oxide, sechinhu chisingawanzo kuwanikwa, ichidhura zvishoma. Zvisinei, indasitiri yekugadzira magirazi inotarisa zvakanyanya pamutengo wekuva muridzi (TCO), kureva, kushanda zvakanaka + goho + zvinodyiwa + kurasikirwa nebasa + kugadzirisa. Mhedziso yekupedzisira inowanzo kuve: nepo alumina yakachipa, mwero wayo wekukwenya uye kugadzirisa wakakwira; nepo cerium oxide ichidhura zvakanyanya payuniti, inopa kushanda kwakanyanya, zvikanganiso zvishoma, uye goho rakakwirira, zvichikonzera mutengo wakaderera zvakanyanya. Nokudaro, ma optics, consumer electronics, uye maindasitiri emagirazi ekuvaka anenge ese anosarudza cerium oxide sehupfu hwavo hwekupolisha hukuru.
Panyaya yekushandiswa,cerium oxideine mukana mukuru muzvinhu zvinenge zvese zvinoda kujeka, kufanana, uye kupenya kwemhando ye optical, kusanganisira girazi rekuvhara nharembozha, ma lenzi ekamera, makamera emotokari, zvikamu zve laser optical, masiraidhi e microscope, girazi re quartz, mahwindo esafire, uye kuporishwa kwakanaka kwegirazi rezvivakwa. Kusiyana neizvi, alumina yakakodzera simbi dzisingaonekwe, ceramics, simbi isingasvibi, molds, magirazi esimbi, uye kukuya kwesafire, uko kunodiwa simba rekucheka rakawanda. Muchidimbu: sarudza cerium oxide yezvinhu zvinoonekera, uye alumina yezvinhu zvakaoma; sarudza cerium oxide yemhando yepamusoro, uye alumina yekucheka nekukurumidza.
Kazhinji, cerium oxide, ine nzira yayo yeCMP yakasiyana, hwindo rekushanda rakagadzikana, kushanda zvakanaka, uye nzvimbo yepamusoro, yave chinhu chisingatsiviwi chekupukuta mumaindasitiri egirazi neoptics. Kunyange zvazvo alumina inodhura zvishoma uye yakaoma, yakakodzera kupukuta zvinhu zvakaoma, zvisingaonekwe zvakaita sesimbi neceramics. Kune makambani anoda mitsetse mikuru, yakagadzikana yekugadzira uye mwero wakaderera wekukuvara, alumina haina kukwana pakupukuta kwekupedzisira kwegirazi rinoonekera, nepo cerium oxide iri mhinduro yakanakisa yekupedzisa pamusoro pechigadzirwa chepamusoro.