I-Cerium Oxide vs. I-Aluminium Oxide Polishing Powder: Ukuhlaziywa Okuqhathanisayo Okuphelele
Emishinini yokulungisa ngokunemba embonini yengilazi neyokukhanya, i-polish powder iyinto ebalulekile enquma ikhwalithi yokugcina yobuso, ukukhanya, kanye nezinga lokukhubazeka.I-Cerium oxide (CeO₂)kanye ne-aluminium oxide (Al₂O₃) yizinto ezimbili ezisetshenziswa kakhulu zokupholisha, kodwa zihluka kakhulu ngesakhiwo sezinto, indlela yokupholisha, ubulukhuni, ukusebenza kahle, kanye nomphumela wokugcina wobuso. Ngakho-ke, ukukhethwa okufanele kwempuphu yokupholisha akuthinti nje kuphela ukusebenza kahle kokucubungula kodwa futhi kuthinta ngqo isivuno kanye nezindleko eziphelele zomkhiqizo oqediwe. I-Cerium oxide, njengezinto zomhlaba ezingavamile, inesimo se-valence esiguquguqukayo se-Ce³⁺/Ce⁴⁺ esiyingqayizivele, esivumela ukuthi ikhiqize ukusabela okuncane kwamakhemikhali lapho ixhumana nama-silicates engilazini. Ungqimba lokusabela oluthambile kakhulu lwakha ebusweni bengilazi ngesikhathi sokupholisha, olususwa ngobumnene ngesenzo esihlangene sephedi yokupholisha kanye nokunyakaza komshini. Le ndlela yokususa inhlanganisela "yamakhemikhali + yomshini" yaziwa ngokuthi i-CMP (Chemical Mechanical Polishing), okuyisizathu esiyinhloko sokuthi ukupholisha kwe-cerium oxide kushesha, kusebenza kahle, futhi kukhiqiza amaphutha aphansi kakhulu ebusweni. Ngokuphambene nalokho, i-alumina iyi-abrasive yendabuko yomshini enobulukhuni be-Mohs obungu-9, okwesibili kuphela emva kwe-corundum nedayimane. Inqubo yokupholisha incike ngokuphelele emaphethelweni abukhali, ubulukhuni, kanye namandla angaphandle ezinhlayiya, okumelela ukugaya okuvamile okumsulwa komshini ngaphandle kwesendlalelo sokuthambisa ngamakhemikhali. Ngakho-ke, inqubo yokususa iyinkimbinkimbi, ibangela kalula ukuklwebheka okuncane okujulile, ikakhulukazi okubonakala ekupholiseni ingilazi esobala.
Ngokuphathelene nobunzima bezinto ezibonakalayo, i-cerium oxide inobunzima be-Mohs obungaba ngu-6, obufana nobengilazi, okwenza kube mnene uma uthinta izinto ezibonakalayo futhi cishe ususe imihuzuko ejulile. I-Alumina, enobunzima obungu-9, ifaneleka ezintweni ezinobunzima obukhulu njengezinsimbi, izinto zobumba, kanye nokupholisha kokuqala kwe-sapphire. Kodwa-ke, uma isetshenziswa engilazini, ingcindezi kumele incishiswe ukuze kugwenywe ukubangela ukuphela okungacwebezeli, imihuzuko, noma ngisho nemifantu emincane, okuholela ekunciphiseni ukucaca. Ezindaweni ezisezingeni lokukhanya, i-alumina ayizinzile kakhulu kune-cerium oxide. Ngokuphathelene nosayizi wezinhlayiya, zombili zingafinyelela ububanzi obungu-0.3–3 μm, kodwa izinhlayiya ze-cerium oxide zivame ukuba yindilinga futhi zinokusatshalaliswa kosayizi wezinhlayiya omncane, okwenza zifaneleke kakhulu ukupholisha kahle; izinhlayiya ze-alumina zinemiphetho ebukhali, okwenza zifaneleke kakhulu ukusika ngokushesha. Ngokuphathelene nokumiswa,i-cerium oxide, ngemva kokuguqulwa kwendawo, igcina ukuhlakazeka okuhle kakhulu kuma-slurries okupholisha, ayithambekeli ekuhlanganisweni noma ekuthuthweni, futhi ifaneleka kakhulu ekucutshungulweni okuqhubekayo kwesikhathi eside. I-Alumina, ngakolunye uhlangothi, inobuningi obukhulu futhi ihlala ngokushesha, idinga ukuxutshwa okuqhubekayo, okwenza ingafaneleki kakhulu emigqeni yokukhiqiza ezenzakalelayo.
Uma kuqhathaniswa ukusebenza kahle kwazo kokupholisha, i-cerium oxide, ngenxa yokuba khona kwesendlalelo sokusabela kwamakhemikhali, ivame ukufeza izinga eliphezulu lokususa izinto (MRR) ngenkathi igcina ikhwalithi engcono yobuso, ikhombisa ukuzinza ikakhulukazi ekucutshungulweni okuqhubekayo kwengilazi enkulu, amalensi okukhanya, kanye namapuleti okumboza ifoni ephathekayo. Ngenkathi i-alumina inobulukhuni obuphezulu futhi ngokwengqondo ishesha ukususwa, incike kakhulu emandleni angaphandle kanye ne-engeli yokusika, inefasitela lenqubo elincane, futhi isengozini yokuklwebheka ngisho noma ingcindezi iphakeme kancane. Ngakho-ke, ekukhiqizweni kwangempela kwesisindo, ivame ukungazinzile kune-cerium oxide, okuholela ekusebenzeni kahle okuphansi. Umehluko wekhwalithi yobuso ubonakala kakhulu.I-Cerium oxideingafinyelela izindawo ezisezingeni lokukhanya nge-Ra < 1 nm, ukukhanya okuphezulu, futhi cishe akukho ukuqedwa kwe-matte, okwenza kube ukukhetha okuthandwayo kwamalensi, izingxenye ze-laser optical, amafasitela e-sapphire, kanye nengilazi ephezulu. I-Alumina, ngenxa yokugaya okuhlanzekile ngomshini, ivame ukukhiqiza amazinga ahlukahlukene okuklwebheka, izendlalelo zokucindezeleka, kanye nomonakalo ongaphansi komhlaba, okuholela ekunciphiseni okukhulu kokukhanya. Ngezinqubo ezifana nokupholisha kokugcina kwengilazi yeselula, ukupholisha kahle amakhamera, kanye nokupholisha amafasitela e-semiconductor optical, i-alumina ayanele futhi ingasetshenziswa kuphela ekupholiseni kokuqala okuqinile.
Ngokombono wokuhambisana nenqubo, i-cerium oxide iyakwazi ukuzivumelanisa nezimo, ayizweli kakhulu kumapharamitha afana ne-pH, i-polishing pad, ingcindezi, kanye nesivinini, futhi kulula ukuyilungisa. Ngakolunye uhlangothi, i-Alumina izwa kakhulu ekucindezelweni kanye nesivinini sokujikeleza; ukungalawuleki okuncane kungabangela imihuzuko noma izindawo ezingalingani, okunciphisa ifasitela layo lokucubungula. Ngaphezu kwalokho, i-alumina ihlala ngokushesha, okuholela ezindleleni zokulungisa eziphakeme kanye nobunzima obukhulu ekuphathweni kwenqubo. Ngokuphathelene nezindleko, i-alumina ishibhile ngempela ngeyunithi ngayinye, kuyilapho i-cerium oxide, njengento engavamile yomhlaba, ibiza kancane. Kodwa-ke, imboni yokucubungula ingilazi igxila kakhulu ezindlekweni zobunikazi (TCO), okungukuthi, ukusebenza kahle + isivuno + izinto ezisetshenziswayo + ukulahlekelwa kwabasebenzi + umsebenzi kabusha. Isiphetho sokugcina sivame ukuba: ngenkathi i-alumina ishibhile, amazinga ayo okuklwebheka kanye nokulungiswa kabusha aphezulu; ngenkathi i-cerium oxide ibiza kakhulu ngeyunithi ngayinye, inikeza ukusebenza kahle okuphezulu, amaphutha aphansi, kanye nesivuno esiphezulu, okuholela ezindleleni eziphansi kakhulu. Ngakho-ke, ama-optics, ama-electronics abathengi, kanye nezimboni zengilazi zokwakha cishe yonke indawo zikhetha i-cerium oxide njengempuphu yazo eyinhloko yokupholisha.
Ngokuphathelene nobubanzi besicelo,i-cerium oxideInenzuzo enkulu cishe kuzo zonke izinkambu ezidinga ukucaca, ukufana, kanye nokukhanya kwe-optical-grade, okuhlanganisa ingilazi yesembozo sefoni ephathekayo, amalensi ekhamera, amakhamera ezimoto, izingxenye ze-laser optical, amaslayidi e-microscope, ingilazi ye-quartz, amafasitela e-sapphire, kanye nokupholishwa kahle kwengilazi yokwakha. Ngokuphambene nalokho, i-alumina ifanele izinsimbi ezingacacile, izinto zobumba, insimbi engagqwali, isikhunta, izibuko zensimbi, kanye nokugaya okungaqinile kwe-sapphire, lapho kudingeka khona amandla aphezulu okusika. Ngamafuphi: khetha i-cerium oxide yezinto ezibonakalayo, kanye ne-alumina yezinto eziqinile; khetha i-cerium oxide yekhwalithi ephezulu, kanye ne-alumina yesivinini sokusika.
Sekukonke, i-cerium oxide, enendlela yayo ehlukile ye-CMP, ifasitela lenqubo elizinzile, ukusebenza kahle okuphezulu, kanye nobuso obusezingeni eliphezulu, isibe yinto yokupholisha engenakufakwa esikhundleni embonini yengilazi neyokukhanya. Nakuba i-alumina ishibhile ngezindleko futhi ilukhuni kakhulu, ifaneleka kakhulu ekupholiseni izinto ezinobulukhuni obuphezulu, ezingabonakali njengezinsimbi kanye ne-ceramics. Ezinkampanini ezidinga imigqa yokukhiqiza emikhulu, ezinzile kanye namazinga aphansi okukhubazeka, i-alumina ayanele izidingo zokugcina zokupholisha zengilazi esobala, kuyilapho i-cerium oxide iyisisombululo esihle kakhulu sokuqedela ubuso bomkhiqizo obuphezulu.