I-Zirconium oxide (ZrO₂), eyaziwa nangokuthi i-zirconium dioxide, iyimpahla ebalulekile ye-ceramic esebenza kahle kakhulu. Impushana emhlophe noma ekhanyayo ephuzi enezakhiwo ezinhle kakhulu zomzimba namakhemikhali. I-Zirconia inezinga lokuncibilika elingaba ngu-2700 ° C, ukuqina okuphezulu, amandla aphezulu emishini, ukuqina okuhle kokushisa kanye nokuzinza kwamakhemikhali, futhi ingakwazi ukumelana nokugqwala kwe-asidi ne-alkali kanye nezimo zokushisa eziphezulu. Ngaphezu kwalokho, i-zirconium oxide inenkomba ephezulu ye-refractive kanye nezakhiwo ezinhle kakhulu ze-optical, ngakho-ke ibuye isetshenziswe kabanzi emkhakheni we-optical.
Ekusetshenzisweni okungokoqobo, okumsulwai-zirconium oxideinezinkinga zokushintsha kwesigaba (ukuguquka kusuka esigabeni se-monoclinic kuya esigabeni se-tetragonal kuzodala ukuguqulwa kwevolumu kanye nokuqhekeka kwempahla), ngakho-ke kuvame ukudingeka ukuthi kufakwe izinza ezifana ne-yttrium oxide (Y₂O₃), i-calcium oxide (CaO) noma i-magnesium oxide (MgO) ukwenza i-zirconium oxide ezinzile (i-zirconium eqinile ukumelana nezakhiwo zayo zokushaqeka okuthuthukisiwe). Ngokusebenzisa izinqubo ze-doping ezinengqondo kanye ne-sintering, izinto ze-zirconia azikwazi nje ukugcina izakhiwo ezinhle kakhulu zemishini, kodwa futhi zibonise ukuqhutshwa kwe-ionic okuhle, okwenza ukuthi isetshenziswe kabanzi kuma-ceramics esakhiwo, amangqamuzana kaphethiloli, izinzwa ze-oxygen, izimila zezokwelapha kanye neminye imikhakha.
Ngaphandle kwezicelo zendabuko zesakhiwo, i-zirconia nayo idlala indima ebaluleke kakhulu emkhakheni wokwelashwa kwe-ultra-precision surface, ikakhulukazi emkhakheni wezinto zokupholisha eziphezulu. Ngezakhiwo zayo ezihlukile zomzimba, i-zirconia isiphenduke into esemqoka ebalulekile yokupholisha ngokunemba.
Emkhakheni wokupholisha,i-zirconiaisetshenziswa kakhulu njengempushana yokupholisha esezingeni eliphezulu kanye nodaka lokupholisha. Ngenxa yokuqina kwayo okumaphakathi (ukuqina kwe-Mohs okungaba ngu-8.5), amandla okusebenza aphezulu kanye nokungangeni kahle kwamakhemikhali, i-zirconia ingafinyelela ubulukhuni obuphansi kakhulu bendawo ngenkathi iqinisekisa izinga lokupholisha eliphezulu, futhi ithole isiphetho sezinga lesibuko. Uma kuqhathaniswa nezinto zokupholisha zendabuko ezifana ne-aluminium oxide ne-cerium oxide, i-zirconia ingakwazi ukulinganisela kangcono izinga lokususwa kwezinto kanye nekhwalithi yendawo ngesikhathi senqubo yokupholisha, futhi iyindawo ebalulekile yokupholisha emkhakheni wokukhiqiza ukunemba okuphezulu.
I-Zirconia polishing powder ngokuvamile inosayizi wezinhlayiyana olawulwa phakathi kuka-0.05μm no-1μm, ofanele ukupholishwa kwendawo yezinto ezihlukahlukene ezinemba okuphezulu. Izindawo zayo eziyinhloko ezisetshenziswayo zihlanganisa: ingilazi yokubona, amalensi ekhamera, ingilazi yesikrini sefoni ephathekayo, ama-hard disk substrates, i-LED sapphire substrates, izinto zensimbi ezisezingeni eliphezulu (njenge-titanium alloys, insimbi engagqwali, ubucwebe bensimbi eyigugu) kanye namadivayisi e-ceramic athuthukisiwe (njenge-alumina ceramics, i-silicon nitride ceramics, njll.). Kulezi zicelo,i-zirconium oxideI-polish powder inganciphisa ngempumelelo amaphutha angaphezulu futhi ithuthukise ukusebenza kwe-optical kanye nokuzinza kwemishini yemikhiqizo.
Ukuze kuhlangatshezwane nezidingo zezinqubo ezahlukene zokupholisha,i-zirconium oxideingenziwa ibe yimpushana yokupholisha eyodwa, noma ingahlanganiswa nezinye izinto zokupholisha (njenge-cerium oxide, i-aluminium oxide) ukuze kwenziwe ukucwebezela okupholishayo ngokusebenza okungcono. Ngaphezu kwalokho, i-high-purity zirconium oxide polishing slurry ngokuvamile isebenzisa ubuchwepheshe be-nano-dispersion ukuze yenze izinhlayiya zihlakazeke kakhulu oketshezini ukuze zigweme ukuhlangana, ziqinisekise ukuzinza kwenqubo yokupholisha kanye nokufana kwendawo yokugcina.
Sekukonke, ngokuthuthuka okuqhubekayo kwezidingo zekhwalithi ephezulu kubuchwepheshe bolwazi lwe-elekthronikhi, ukukhiqizwa kwe-optical, i-aerospace kanye nezinkundla zezokwelapha ezisezingeni eliphezulu,i-zirconium oxide, njengohlobo olusha lwezinto zokupholisha ezisebenza kahle kakhulu, kunethuba elibanzi kakhulu lokufaka isicelo. Esikhathini esizayo, ngokuthuthukiswa okuqhubekayo kobuchwepheshe bemishini ye-ultra-precision, ukusetshenziswa kwezobuchwepheshe kwe-zirconium oxide emkhakheni wokupholisha kuzoqhubeka nokujula, kusize ukuhlangabezana nezidingo zokukhiqiza ezisezingeni eliphezulu.