Kukula kwachangu pazambiri komanso ma optoelectronics kwalimbikitsa kukonzanso kopitilira muyeso kwaukadaulo waukadaulo wa Chemical mechanical polishing (CMP).Kuwonjezera zipangizo ndi zipangizo, kupeza kopitilira muyeso-mkulu-mwatsatanetsatane pamwamba zimadalira kamangidwe ndi mafakitale kupanga mkulu-mwachangu abrasive particles, komanso kukonzekera lolingana kupukuta slurry.Ndipo ndi kuwongolera kosalekeza kwa kulondola kwapang'onopang'ono komanso zofunikira pakuchita bwino, zofunikira pazida zopukutira zapamwamba zikukweranso.Cerium dioxide yakhala ikugwiritsidwa ntchito kwambiri pamakina olondola apamwamba a zida za microelectronic ndi zida zowoneka bwino.
Cerium oxide polishing powder (VK-Ce01) ufa wonyezimira uli ndi ubwino wa luso lolimba lodula, kupukuta kwakukulu, kupukuta bwino, kupukuta bwino, kupukuta bwino, malo ogwirira ntchito oyera, kuipitsidwa kochepa, moyo wautali wautumiki, etc., ndipo amagwiritsidwa ntchito kwambiri kuwala mwatsatanetsatane kupukuta ndi CMP, etc. munda ali ndi udindo wofunika kwambiri.
Zofunikira za cerium oxide:
Ceria, yemwenso amadziwika kuti cerium oxide, ndi okusayidi wa cerium.Panthawiyi, valence ya cerium ndi +4, ndipo mankhwala ndi CeO2.Choyeracho ndi ufa woyera wolemera kapena cubic crystal, ndipo zonyansazo zimakhala zachikasu kapena pinki mpaka zofiira zofiira (chifukwa zimakhala ndi lanthanum, praseodymium, etc.).Pa kutentha ndi kupanikizika, ceria ndi oxide yokhazikika ya cerium.Cerium imathanso kupanga +3 valence Ce2O3, yomwe ndi yosakhazikika ndipo ipanga CeO2 yokhazikika ndi O2.Cerium oxide imasungunuka pang'ono m'madzi, alkali ndi asidi.Kachulukidwe ndi 7.132 g/cm3, malo osungunuka ndi 2600 ℃, ndipo malo owira ndi 3500 ℃.
Njira yopukutira ya cerium oxide
Kuuma kwa tinthu ta CeO2 sikokwezeka.Monga momwe tawonetsera mu tebulo ili m'munsimu, kuuma kwa cerium oxide ndi kochepa kwambiri kusiyana ndi diamondi ndi aluminium oxide, komanso kutsika kuposa zirconium oxide ndi silicon oxide, yomwe ili yofanana ndi ferric oxide.Chifukwa chake sikutheka mwaukadaulo kuwononga zinthu zopangidwa ndi silicon oxide, monga galasi la silicate, galasi la quartz, ndi zina zotero, ndi ceria yokhala ndi kuuma kochepa kuchokera kumakina okha.Komabe, cerium oxide pakali pano ndi ufa wopendekera womwe umakonda kupukuta zida zopangidwa ndi silicon oxide kapena zida za silicon nitride.Zitha kuwoneka kuti kupukuta kwa cerium oxide kumakhalanso ndi zotsatira zina pambali pamakina.Kulimba kwa diamondi, komwe ndi chinthu chomwe chimagwiritsidwa ntchito kwambiri popera ndi kupukuta, nthawi zambiri chimakhala ndi malo a oxygen mu lattice ya CeO2, yomwe imasintha mawonekedwe ake akuthupi ndi mankhwala ndipo imakhala ndi mphamvu yopukutira.Mafuta opukuta a cerium oxide omwe amagwiritsidwa ntchito kwambiri amakhala ndi ma oxide ena osowa padziko lapansi.Praseodymium oxide (Pr6O11) ilinso ndi mawonekedwe amtundu wa cubic latice, omwe ndi oyenera kupukuta, pomwe ma oxide ena amtundu wa lanthanide osowa padziko lapansi alibe luso lopukuta.Popanda kusintha mawonekedwe a kristalo a CeO2, amatha kupanga yankho lolimba nalo mkati mwamitundu ina.Kwa ufa wonyezimira kwambiri wa nano-cerium oxide polishing (VK-Ce01), kukwezeka kwa cerium oxide (VK-Ce01), kumapangitsanso luso lopukuta komanso moyo wautali wautumiki, makamaka magalasi olimba ndi magalasi a quartz nthawi yayitali.Pamene kupukuta kwa cyclic, ndi bwino kugwiritsa ntchito ufa wopukuta wa cerium oxide (VK-Ce01).
Kugwiritsa ntchito cerium oxide kupukuta ufa:
Cerium oxide kupukuta ufa (VK-Ce01), makamaka ntchito kupukuta galasi mankhwala, izo makamaka ntchito m'madera otsatirawa:
1. Magalasi, kupukuta magalasi agalasi;
2. Magalasi a kuwala, galasi la kuwala, lens, ndi zina zotero;
3. Galasi yowonetsera foni yam'manja, malo owonera (chitseko choyang'ana), etc.;
4. LCD kuwunika mitundu yonse ya LCD chophimba;
5. Ma Rhinestones, ma diamondi otentha (makadi, diamondi pa jeans), mipira yowunikira (miyendo yapamwamba muholo yaikulu);
6. Zojambula za kristalo;
7. Kupukuta pang'ono kwa yade
Zotuluka pakali pano za cerium oxide polishing:
Pamwamba pa cerium oxide amapangidwa ndi aluminiyamu kuti apititse patsogolo kupukuta kwake kwagalasi lowala.
Dipatimenti ya Technology Research and Development ya UrbanMines Tech.Limited, ananena kuti kuphatikizika ndi pamwamba kusinthidwa kwa particles kupukuta ndi njira zazikulu ndi njira kusintha dzuwa ndi kulondola kwa CMP kupukuta.Chifukwa tinthu tating'onoting'ono titha kusinthidwa ndi kuphatikizika kwa zinthu zamitundu yambiri, komanso kukhazikika kwa kubalalitsidwa ndi kupukutidwa bwino kwa kupukuta slurry kumatha kusinthidwa ndikusinthidwa padziko lapansi.Kukonzekera ndi kupukuta kwa CeO2 ufa wopangidwa ndi TiO2 kungathe kupititsa patsogolo kupukuta ndi kupitirira 50%, ndipo nthawi yomweyo, zolakwika zapamtunda zimachepetsedwa ndi 80%.The synergistic kupukuta zotsatira za CeO2 ZrO2 ndi SiO2 2CeO2 gulu oxides;Choncho, luso kukonzekera doped ceria yaying'ono-nano composite oxides ndi yofunika kwambiri kwa chitukuko cha zipangizo zatsopano kupukuta ndi kukambirana limagwirira kupukuta.Kuphatikiza pa kuchuluka kwa doping, boma ndi kugawa kwa dopant mu tinthu tating'onoting'ono kumakhudzanso kwambiri katundu wawo komanso kupukuta.
Pakati pawo, kaphatikizidwe ka tinthu tating'onoting'ono tomwe timakhala ndi ma cladding ndi okongola kwambiri.Choncho, kusankha njira zopangira ndi zinthu ndizofunikira kwambiri, makamaka njira zomwe zimakhala zosavuta komanso zotsika mtengo.Pogwiritsa ntchito hydrated cerium carbonate monga zopangira zazikulu, aluminiyamu-doped cerium oxide polishing particles anapangidwa ndi chonyowa olimba-gawo mechanochemical njira.Pansi pa mphamvu yamakina, tinthu tating'ono ta hydrated cerium carbonate titha kung'ambika kukhala tinthu tating'onoting'ono, pomwe aluminium nitrate imakhudzidwa ndi madzi ammonia kupanga tinthu tating'onoting'ono ta amorphous colloidal.The colloidal particles mosavuta Ufumuyo cerium carbonate particles, ndipo pambuyo kuyanika ndi calcination, zotayidwa doping chingapezeke padziko cerium okusayidi.Njirayi idagwiritsidwa ntchito popanga tinthu tating'ono ta cerium oxide ndi kuchuluka kosiyanasiyana kwa aluminiyamu doping, ndipo kupukuta kwawo kumadziwika.Pambuyo pa mlingo woyenera wa aluminiyumu anawonjezeredwa pamwamba pa cerium okusayidi particles, phindu loipa la pamwamba likhoza kuwonjezeka, zomwe zinapangitsa kusiyana pakati pa abrasive particles.Pali mphamvu ya electrostatic repulsion, yomwe imalimbikitsa kukhazikika kwa kuyimitsidwa kwa abrasive.Panthawi imodzimodziyo, kugwirizanitsa pakati pa abrasive particles ndi mpweya wabwino wofewa wofewa kupyolera mu Coulomb kukopa kudzalimbikitsidwanso, zomwe zimapindulitsa kuyanjana pakati pa abrasive ndi wosanjikiza wofewa pamwamba pa galasi lopukutidwa, ndikulimbikitsana. kukhathamiritsa kwa liwiro la kupukuta.