Kukula mwachangu m'magawo a chidziwitso ndi ma optoelectronics kwalimbikitsa kusinthidwa kosalekeza kwa ukadaulo wa chemical mechanical polishing (CMP). Kuwonjezera pa zida ndi zinthu, kupeza malo olondola kwambiri kumadalira kwambiri kapangidwe ndi kupanga mafakitale a tinthu tating'onoting'ono tomwe timatha kugwira ntchito bwino, komanso kukonzekera slurry yofananira yopukuta. Ndipo chifukwa cha kusintha kosalekeza kwa kulondola kwa kukonza pamwamba ndi zofunikira pakugwira ntchito bwino, zofunikira pa zipangizo zopukuta bwino kwambiri zikukulirakulira. Cerium dioxide yagwiritsidwa ntchito kwambiri popanga zinthu zolondola pamwamba pa zipangizo zamagetsi ndi zigawo zolondola za kuwala.
Ufa wopukutira wa Cerium oxide polishing powder (VK-Ce01) uli ndi ubwino wodula bwino, kugwira ntchito bwino kwambiri, kupukuta molondola, kupukuta bwino, malo ogwirira ntchito oyera, kuipitsa pang'ono, nthawi yayitali yogwira ntchito, ndi zina zotero, ndipo umagwiritsidwa ntchito kwambiri pakupukuta kolondola kwa kuwala ndi CMP, ndi zina zotero.
Makhalidwe oyambira a cerium oxide:
Ceria, yomwe imadziwikanso kuti cerium oxide, ndi oxide wa cerium. Panthawiyi, valence ya cerium ndi +4, ndipo formula ya mankhwala ndi CeO2. Chopangidwacho ndi ufa woyera wolemera kapena cubic crystal, ndipo chopangidwacho chodetsedwa chimakhala chachikasu chopepuka kapena pinki mpaka bulauni (chifukwa chili ndi zochepa za lanthanum, praseodymium, ndi zina zotero). Pa kutentha kwa chipinda ndi kupanikizika, ceria ndi oxide wokhazikika wa cerium. Cerium imatha kupanganso +3 valence Ce2O3, yomwe ndi yosakhazikika ndipo imapanga CeO2 yokhazikika ndi O2. Cerium oxide imasungunuka pang'ono m'madzi, alkali ndi asidi. Kuchuluka kwake ndi 7.132 g/cm3, malo osungunuka ndi 2600℃, ndipo malo owira ndi 3500℃.
Njira yopukutira ya cerium oxide
Kuuma kwa tinthu ta CeO2 sikokwera. Monga momwe tawonetsera patebulo ili pansipa, kuuma kwa cerium oxide ndi kotsika kwambiri kuposa kwa diamondi ndi aluminiyamu oxide, komanso kotsika kuposa kwa zirconium oxide ndi silicon oxide, zomwe ndizofanana ndi ferric oxide. Chifukwa chake sizingatheke mwaukadaulo kuchotsa zinthu zopangidwa ndi silicon oxide, monga galasi la silicate, galasi la quartz, ndi zina zotero, ndi ceria yokhala ndi kuuma kochepa kuchokera ku malingaliro a makina okha. Komabe, cerium oxide pakadali pano ndiye ufa wopukutira womwe umakondedwa kwambiri popukutira zinthu zopangidwa ndi silicon oxide kapena ngakhale zinthu za silicon nitride. Zitha kuwoneka kuti kupukutira kwa cerium oxide kulinso ndi zotsatira zina kupatula zotsatira zamakina. Kuuma kwa diamondi, komwe kumagwiritsidwa ntchito kwambiri popukutira ndi kupukuta, nthawi zambiri kumakhala ndi malo opanda mpweya mu CeO2 lattice, zomwe zimasintha mawonekedwe ake akuthupi ndi a mankhwala ndipo zimakhudza kwambiri mawonekedwe a kupukuta. Ufa wopukutira wa cerium oxide womwe umagwiritsidwa ntchito nthawi zambiri umakhala ndi kuchuluka kwa ma oxide ena osowa a earth. Praseodymium oxide (Pr6O11) ilinso ndi mawonekedwe a cubic lattice okhala ndi nkhope, omwe ndi oyenera kupukuta, pomwe ma lanthanide rare earth oxide ena alibe mphamvu yopukuta. Popanda kusintha kapangidwe ka kristalo ka CeO2, imatha kupanga yankho lolimba nayo mkati mwa mtundu wina. Pa ufa wopukutira wa nano-cerium oxide woyera kwambiri (VK-Ce01), kuyera kwa cerium oxide (VK-Ce01) kumakhala kwakukulu, mphamvu yopukuta imakhala yayikulu komanso moyo wautali wautumiki, makamaka pa magalasi olimba ndi magalasi a quartz kwa nthawi yayitali. Mukapukuta mozungulira, ndibwino kugwiritsa ntchito ufa wopukutira wa cerium oxide woyera kwambiri (VK-Ce01).
Kugwiritsa ntchito ufa wopukuta wa cerium oxide:
Ufa wopukutira wa Cerium oxide (VK-Ce01), womwe umagwiritsidwa ntchito kwambiri popukutira zinthu zagalasi, umagwiritsidwa ntchito makamaka m'magawo otsatirawa:
1. Magalasi, kupukuta magalasi;
2. Lenzi yowala, galasi lowala, lenzi, ndi zina zotero;
3. Galasi lophimba foni yam'manja, malo owonera wotchi (chitseko cha wotchi), ndi zina zotero;
4. LCD monitor mitundu yonse ya LCD screen;
5. Ma Rhinestones, ma diamondi otentha (makadi, ma diamondi pa jinzi), mipira yowunikira (ma chandeliers apamwamba mu holo yayikulu);
6. Zaluso za kristalo;
7. Kupukuta pang'ono kwa jade
Zochokera ku cerium oxide polishing derivatives zomwe zilipo panopa:
Pamwamba pa cerium oxide pali aluminiyamu kuti iwonjezere kunyezimira kwa magalasi owunikira.
Dipatimenti Yofufuza ndi Kukonza Ukadaulo ya UrbanMines Tech. Limited, inanena kuti kuphatikiza ndi kusintha pamwamba pa tinthu tating'onoting'ono topukutira ndi njira zazikulu komanso njira zowongolera magwiridwe antchito ndi kulondola kwa kupukuta kwa CMP. Chifukwa makhalidwe a tinthu tating'onoting'ono amatha kusinthidwa mwa kuphatikiza zinthu zambiri, ndipo kukhazikika kwa kufalikira ndi kugwira ntchito bwino kwa slurry yopukutira kumatha kusinthidwa mwa kusintha pamwamba. Kukonzekera ndi kugwira ntchito bwino kwa ufa wa CeO2 wophatikizidwa ndi TiO2 kumatha kupititsa patsogolo kugwira ntchito bwino kwa kupukuta ndi oposa 50%, ndipo nthawi yomweyo, zolakwika za pamwamba zimachepetsedwanso ndi 80%. Mphamvu yogwirizanitsa kupukuta kwa CeO2 ZrO2 ndi SiO2 2CeO2 composite oxides; chifukwa chake, ukadaulo wokonzekera wa doped ceria micro-nano composite oxides ndi wofunikira kwambiri pakupanga zida zatsopano zopukutira ndi kukambirana za njira yopukutira. Kuphatikiza pa kuchuluka kwa doping, momwe dopant imagawidwira ndi momwe dopant imagawidwira m'tinthu tating'onoting'ono topukutira zimakhudziranso kwambiri mawonekedwe awo pamwamba ndi magwiridwe antchito a kupukuta.
Pakati pawo, kupanga tinthu tating'onoting'ono tomwe tili ndi kapangidwe ka cladding ndikokongola kwambiri. Chifukwa chake, kusankha njira ndi mikhalidwe yopangira ndikofunikira kwambiri, makamaka njira zosavuta komanso zotsika mtengo. Pogwiritsa ntchito hydrated cerium carbonate ngati zinthu zazikulu zopangira, tinthu tating'onoting'ono tomwe timapangidwa ndi aluminiyamu tinapangidwa ndi njira yonyowa ya solid-phase mechanochemical. Pogwiritsa ntchito mphamvu ya makina, tinthu tating'onoting'ono ta hydrated cerium carbonate tingagawidwe kukhala tinthu tating'onoting'ono, pomwe aluminium nitrate imagwira ntchito ndi madzi a ammonia kuti ipange tinthu tating'onoting'ono ta colloidal tomwe sitingasinthe. Tinthu ta colloidal timalumikizidwa mosavuta ndi tinthu ta cerium carbonate, ndipo pambuyo pouma ndi calcination, aluminium doping imatha kuchitika pamwamba pa cerium oxide. Njirayi idagwiritsidwa ntchito popanga tinthu ta cerium oxide tomwe tili ndi kuchuluka kosiyanasiyana kwa aluminium doping, ndipo magwiridwe antchito awo opukuta adadziwika. Pambuyo poti aluminiyamu yokwanira yawonjezedwa pamwamba pa tinthu ta cerium oxide, mtengo woyipa wa mphamvu ya pamwamba umawonjezeka, zomwe zimapangitsa kuti kusiyana pakati pa tinthu tating'onoting'ono tomwe timapanga. Pali mphamvu yamphamvu ya electrostatic repulsion, yomwe imalimbikitsa kusintha kwa kukhazikika kwa abrasive suspension. Nthawi yomweyo, kuyamwa kwa zinthu pakati pa tinthu tating'onoting'ono tomwe timayamwa ndi wosanjikiza wofewa womwe uli ndi mphamvu zabwino kudzera mu Coulomb kudzalimbikitsidwanso, zomwe zimathandiza kukhudzana kwa zinthu pakati pa wosanjikiza ndi wosanjikiza wofewa pamwamba pa galasi lopukutidwa, komanso kumalimbikitsa kukwera kwa kupukuta.