Kev loj hlob sai hauv cov teb ntawm cov ntaub ntawv thiab optoelectronics tau txhawb nqa kev hloov kho tas mus li ntawm cov thev naus laus zis tshuaj lom neeg (CMP). Ntxiv rau cov khoom siv thiab cov ntaub ntawv, kev tau txais cov nplaim ultra-high-precision yog nyob ntawm kev tsim thiab kev tsim khoom lag luam ntawm cov khoom siv abrasive siab, nrog rau kev npaj cov polishing slurry sib xws. Thiab nrog rau kev txhim kho tas mus li ntawm kev ua tiav ntawm qhov tseeb thiab kev ua haujlwm zoo, cov kev xav tau rau cov ntaub ntawv polishing siab kuj tau nce siab thiab siab dua. Cerium dioxide tau siv dav hauv kev ua haujlwm nto ntawm cov khoom siv microelectronic thiab cov khoom siv optical precision.
Cov hmoov txhuam Cerium oxide (VK-Ce01) muaj qhov zoo ntawm kev muaj peev xwm txiav tau zoo, kev ua haujlwm txhuam zoo, kev ua haujlwm txhuam zoo, kev ua haujlwm huv, kev ua qias tuaj tsawg, lub neej ua haujlwm ntev, thiab lwm yam, thiab siv dav hauv kev txhuam kom raug thiab CMP, thiab lwm yam. Nws yog ib qho tseem ceeb heev.
Cov yam ntxwv tseem ceeb ntawm cerium oxide:
Ceria, tseem hu ua cerium oxide, yog ib qho oxide ntawm cerium. Lub sijhawm no, qhov valence ntawm cerium yog +4, thiab cov mis tshuaj yog CeO2. Cov khoom ntshiab yog hmoov dawb hnyav lossis cubic siv lead ua, thiab cov khoom tsis huv yog daj daj lossis txawm tias liab dawb mus rau xim av liab (vim nws muaj cov lanthanum, praseodymium, thiab lwm yam me me). Ntawm chav tsev kub thiab siab, ceria yog ib qho oxide ruaj khov ntawm cerium. Cerium kuj tseem tuaj yeem tsim +3 valence Ce2O3, uas tsis ruaj khov thiab yuav tsim CeO2 ruaj khov nrog O2. Cerium oxide yog me ntsis soluble hauv dej, alkali thiab acid. Qhov ceev yog 7.132 g / cm3, lub ntsiab lus yaj yog 2600 ℃, thiab lub ntsiab lus kub yog 3500 ℃.
Txoj kev txhuam hniav ntawm cerium oxide
Qhov nyuaj ntawm cov khoom me me CeO2 tsis siab. Raws li pom hauv lub rooj hauv qab no, qhov nyuaj ntawm cerium oxide qis dua li ntawm pob zeb diamond thiab txhuas oxide, thiab kuj qis dua li ntawm zirconium oxide thiab silicon oxide, uas sib npaug rau ferric oxide. Yog li ntawd, nws tsis yooj yim sua kom tshem tawm cov khoom siv silicon oxide, xws li iav silicate, iav quartz, thiab lwm yam, nrog ceria nrog qhov nyuaj tsawg los ntawm qhov pom ntawm lub tshuab xwb. Txawm li cas los xij, cerium oxide tam sim no yog cov hmoov polishing nyiam rau polishing cov khoom siv silicon oxide lossis txawm tias cov khoom siv silicon nitride. Nws tuaj yeem pom tias cerium oxide polishing kuj muaj lwm yam teebmeem ntxiv rau cov teebmeem tshuab. Qhov nyuaj ntawm pob zeb diamond, uas yog cov khoom siv sib tsoo thiab polishing feem ntau muaj cov pa oxygen hauv CeO2 lattice, uas hloov nws cov khoom siv lub cev thiab tshuaj lom neeg thiab muaj qee qhov cuam tshuam rau cov khoom polishing. Cov hmoov polishing cerium oxide feem ntau siv muaj qee qhov ntawm lwm cov oxides av tsawg. Praseodymium oxide (Pr6O11) kuj muaj lub ntsej muag-centered cubic lattice qauv, uas yog tsim rau polishing, thaum lwm cov lanthanide rare earth oxides tsis muaj peev xwm polishing. Tsis tas hloov cov qauv siv lead ua ntawm CeO2, nws tuaj yeem tsim cov tshuaj khov kho nrog nws hauv qee qhov ntau. Rau cov hmoov polishing nano-cerium oxide polishing uas muaj purity siab (VK-Ce01), qhov purity ntawm cerium oxide (VK-Ce01) siab dua, qhov muaj peev xwm polishing ntau dua thiab lub neej ua haujlwm ntev dua, tshwj xeeb tshaj yog rau cov iav tawv thiab cov iav quartz optical rau lub sijhawm ntev. Thaum polishing cyclic, nws raug nquahu kom siv cov hmoov polishing cerium oxide uas muaj purity siab (VK-Ce01).
Daim ntawv thov ntawm cerium oxide polishing hmoov:
Cerium oxide polishing hmoov (VK-Ce01), feem ntau yog siv rau kev txhuam cov khoom iav, nws yog siv rau hauv cov teb hauv qab no:
1. Cov tsom iav, iav lens polishing;
2. Lub lens kho qhov muag, iav kho qhov muag, lub lens, thiab lwm yam.;
3. Lub iav ntawm lub xov tooj ntawm tes, qhov chaw saib (qhov rooj saib), thiab lwm yam.;
4. LCD saib xyuas txhua yam ntawm LCD npo;
5. Rhinestones, pob zeb diamond kub (daim npav, pob zeb diamond ntawm ris tsho jeans), teeb pom kev zoo pob (chandeliers khoom kim heev hauv chav loj);
6. Cov khoom siv tes ua los ntawm siv lead ua;
7. Ib feem polishing ntawm jade
Cov khoom siv polishing cerium oxide tam sim no:
Qhov saum npoo ntawm cerium oxide yog doped nrog txhuas los txhim kho nws cov polishing ntawm optical iav.
Lub Chaw Tshawb Fawb thiab Kev Txhim Kho Tshuab ntawm UrbanMines Tech. Limited, tau hais tias kev sib xyaw thiab kev hloov kho ntawm cov khoom sib xyaw yog cov txheej txheem tseem ceeb thiab cov txheej txheem los txhim kho kev ua haujlwm zoo thiab qhov tseeb ntawm CMP polishing. Vim tias cov khoom sib xyaw tuaj yeem kho tau los ntawm kev sib xyaw ntawm ntau yam khoom, thiab kev ruaj khov ntawm kev sib kis thiab kev ua haujlwm ntawm polishing slurry tuaj yeem txhim kho los ntawm kev hloov kho ntawm qhov chaw. Kev npaj thiab kev ua haujlwm polishing ntawm CeO2 hmoov doped nrog TiO2 tuaj yeem txhim kho kev ua haujlwm polishing los ntawm ntau dua 50%, thiab tib lub sijhawm, qhov tsis zoo ntawm qhov chaw kuj raug txo los ntawm 80%. Cov nyhuv polishing synergistic ntawm CeO2 ZrO2 thiab SiO2 2CeO2 composite oxides; yog li ntawd, cov txheej txheem npaj ntawm doped ceria micro-nano composite oxides yog qhov tseem ceeb heev rau kev tsim cov ntaub ntawv polishing tshiab thiab kev sib tham txog kev sib xyaw. Ntxiv nrog rau qhov ntau ntawm doping, lub xeev thiab kev faib tawm ntawm dopant hauv cov khoom sib xyaw kuj cuam tshuam loj heev rau lawv cov khoom nto thiab kev ua haujlwm polishing.
Ntawm lawv, kev tsim cov khoom siv polishing nrog cov qauv cladding yog qhov zoo dua. Yog li ntawd, kev xaiv cov txheej txheem thiab cov xwm txheej tsim kuj tseem ceeb heev, tshwj xeeb tshaj yog cov txheej txheem uas yooj yim thiab pheej yig. Siv hydrated cerium carbonate ua cov khoom siv tseem ceeb, aluminium-doped cerium oxide polishing particles tau synthesized los ntawm cov txheej txheem ntub dej khov-theem mechanochemical. Nyob rau hauv qhov kev ua ntawm lub zog kho tshuab, cov khoom loj ntawm hydrated cerium carbonate tuaj yeem raug txiav ua cov khoom me me, thaum txhuas nitrate reacts nrog ammonia dej los tsim cov khoom amorphous colloidal. Cov khoom colloidal tau yooj yim txuas rau cov khoom cerium carbonate, thiab tom qab ziab thiab calcination, txhuas doping tuaj yeem ua tiav ntawm qhov chaw ntawm cerium oxide. Txoj kev no tau siv los tsim cov khoom cerium oxide nrog ntau yam ntawm txhuas doping, thiab lawv cov kev ua polishing tau piav qhia. Tom qab ntxiv cov txhuas kom tsim nyog rau ntawm qhov chaw ntawm cov khoom cerium oxide, tus nqi tsis zoo ntawm qhov muaj peev xwm ntawm qhov chaw yuav nce ntxiv, uas ua rau qhov sib txawv ntawm cov khoom abrasive. Muaj zog electrostatic repulsion, uas txhawb kev txhim kho ntawm kev ruaj khov ntawm abrasive suspension. Tib lub sijhawm, qhov kev sib nqus ntawm cov khoom sib xyaw thiab cov txheej mos mos uas muaj nqi zoo los ntawm Coulomb attraction kuj yuav muaj zog, uas yog qhov zoo rau kev sib cuag ntawm cov khoom sib xyaw thiab cov txheej mos mos ntawm qhov chaw ntawm cov iav ci, thiab txhawb kev txhim kho ntawm tus nqi polishing.