ʻO Cerium Oxide vs. Aluminum Oxide Polishing Powder: He Loiloi Hoʻohālikelike Piha
I ka mīkini ʻana i ka pololei i nā ʻoihana aniani a me ka optics, ʻo ka pauka wili kahi mea nui e hoʻoholo ai i ka maikaʻi o ka ʻili hope loa, ka ʻōlinolino, a me ka helu kīnā.ʻOkiuma Cerium (CeO₂)a me ka alumini oxide (Al₂O₃) nā mea hoʻopili ʻelua i hoʻohana nui ʻia, akā ʻokoʻa nui lākou i ke ʻano o ka mea, ke ʻano hoʻopili, ka paʻakikī, ka pono, a me ka hopena hope loa o ka ʻili. No laila, ʻo ke koho pololei ʻana o ka pauka hoʻopili ʻaʻole wale ia e pili ana i ka pono o ka hana ʻana akā pili pololei hoʻi i ka hua a me ke kumukūʻai holoʻokoʻa o ka huahana i hoʻopau ʻia. ʻO Cerium oxide, ma ke ʻano he mea honua kakaikahi, loaʻa iā ia kahi kūlana valence hoʻohuli Ce³⁺/Ce⁴⁺ kū hoʻokahi, e hiki ai iā ia ke hana i kahi hopena kemika liʻiliʻi ma ka hoʻopili ʻana me nā silicates i loko o ke aniani. Hoʻokumu ʻia kahi papa hana palupalu lahilahi loa ma luna o ka ʻili aniani i ka wā o ka hoʻopili ʻana, kahi i wehe mālie ʻia e ka hana hui pū ʻana o ka pad polishing a me ka neʻe mechanical. ʻIke ʻia kēia ʻano wehe hui "chemical + mechanical" ʻo CMP (Chemical Mechanical Polishing), ʻo ia ke kumu nui o ka wikiwiki, ka pono o ka hoʻopili ʻana o ka cerium oxide, a hana i nā hemahema ʻili haʻahaʻa loa. I ka hoʻohālikelike ʻana, ʻo ka alumina kahi abrasive mechanical kuʻuna me ka paʻakikī Mohs o 9, ʻo ka lua wale nō i ka corundum a me ke daimana. Hilinaʻi wale ke kaʻina hana hoʻopili ʻana i nā ʻaoʻao ʻoi, ka paʻakikī, a me ka ikaika o waho o nā ʻāpana, e hōʻike ana i ka wili mīkini maʻemaʻe maʻamau me ka ʻole o kahi papa palupalu kemika. No laila, ʻoi aku ka ʻoi o ke kaʻina hana wehe, e maʻalahi ai ke kumu o nā micro-scratches hohonu, ʻike nui ʻia i ka hoʻopili ʻana o ke aniani moakaka.
Ma ke ʻano o ka paʻakikī o nā mea, ʻo ka paʻakikī Mohs o ka cerium oxide ma kahi o 6, kokoke i ke aniani, e ʻoi aku ka mālie i ka wā e hoʻopili ai i nā mea aniani a kokoke e hoʻopau i nā ʻōpala hohonu. ʻO Alumina, me ka paʻakikī o 9, kūpono ia no nā mea paʻakikī kiʻekiʻe e like me nā metala, nā keramika, a me ka hoʻopili mua ʻana o ka sapphire. Eia nō naʻe, i ka wā e hoʻohana ʻia ai ma ke aniani, pono e hoʻemi ʻia ke kaomi e pale aku i ka hana ʻana i kahi matte finish, scratches, a i ʻole micro-cracks, e alakaʻi ana i ka emi ʻana o ka transparency. No nā ʻili optical-grade, ʻoi aku ka paʻa o ka alumina ma mua o ka cerium oxide. E pili ana i ka nui o ka ʻāpana, hiki i nā mea ʻelua ke hoʻokō i kahi laulā o 0.3-3 μm, akā ʻoi aku ka poepoe o nā ʻāpana cerium oxide a he ʻoi aku ka liʻiliʻi o ka hoʻolaha ʻana o ka nui o ka ʻāpana, e ʻoi aku ka kūpono no ka hoʻopili maikaʻi ʻana; ʻoi aku ka ʻoi o nā ʻāpana alumina, e ʻoi aku ka kūpono no ka ʻoki wikiwiki. Ma ke ʻano o ka hoʻokuʻu ʻana,ʻokikene cerium, ma hope o ka hoʻololi ʻana o ka ʻili, mālama i ka dispersibility maikaʻi loa i nā slurries polishing, ʻaʻole i maʻalahi i ka agglomeration a i ʻole sedimentation, a kūpono loa no ka hana hoʻomau lōʻihi. ʻO Alumina, ma ka ʻaoʻao ʻē aʻe, ʻoi aku ka nui o ka density a hoʻopaʻa wikiwiki, e koi ana i ka hoʻoulu mau ʻana, e lilo ia i mea kūpono ʻole no nā laina hana automated.
Ke hoʻohālikelike nei i kā lākou pono polishing, ʻo ka cerium oxide, ma muli o ke alo o kahi papa hopena kemika, hoʻokō pinepine i kahi helu wehe mea kiʻekiʻe (MRR) me ka mālama ʻana i ka maikaʻi o ka ʻili, e hōʻike ana i ke kūpaʻa ʻana ma ke kaʻina hana mau o ke aniani nui, nā aniani optical, a me nā papa uhi kelepona paʻalima. ʻOiai he paʻakikī kiʻekiʻe ka alumina a ma ke kumumanaʻo he wikiwiki ka wehe ʻana, hilinaʻi nui ia i ka ikaika o waho a me ke kihi ʻoki, he puka makani kaʻina hana haiki, a hiki ke ʻōpala ʻia me ke kaomi kiʻekiʻe iki. No laila, i ka hana nui maoli, ʻaʻole ia i paʻa ma mua o ka cerium oxide, e hopena ana i ka haʻahaʻa o ka pono. ʻOi aku ka ʻike ʻia o ka ʻokoʻa o ka maikaʻi o ka ʻili.ʻOkiuma seriumahiki ke hoʻokō i nā ʻili optical-grade me Ra < 1 nm, transparency kiʻekiʻe, a ʻaneʻane ʻaʻohe hopena matte, e lilo ia i koho makemake ʻia no nā aniani, nā ʻāpana optical laser, nā puka makani sapphire, a me ke aniani kiʻekiʻe. ʻO Alumina, ma muli o ka wili mechanical maʻemaʻe, hana pinepine ia i nā ʻano like ʻole o nā ʻōpala, nā papa stress, a me ka hōʻino ʻana o lalo o ka ʻili, e hopena ana i ka emi nui ʻana o ka transparency. No nā kaʻina hana e like me ka polishing hope o ke aniani kelepona paʻalima, ka polishing maikaʻi o nā kāmela, a me ka polishing o nā puka makani optical semiconductor, ʻaʻole lawa ka alumina a hiki ke hoʻohana wale ʻia no ka polishing rough mua.
Mai kahi hiʻohiʻona kūlike o ke kaʻina hana, ʻoi aku ka maʻalahi o ka cerium oxide, ʻaʻole i maʻalahi i nā palena e like me ka pH, ka polishing pad, ke kaomi, a me ka wikiwiki, a maʻalahi hoʻi e hoʻoponopono. ʻO Alumina, ma ka ʻaoʻao ʻē aʻe, he maʻalahi loa ia i ke kaomi a me ka wikiwiki o ka wili; hiki i ka hoʻokele hewa iki ke hopena i nā ʻōpala a i ʻole nā ʻili like ʻole, e hoʻohaiki ana i kona puka makani hana. Eia kekahi, hoʻopaʻa koke ka alumina, e alakaʻi ana i nā kumukūʻai mālama kiʻekiʻe a me ka paʻakikī nui i ka hoʻokele kaʻina hana. Ma ke ʻano o ke kumukūʻai, ʻoi aku ka liʻiliʻi o ka alumina ma kēlā me kēia ʻāpana, ʻoiai ʻo ka cerium oxide, ma ke ʻano he mea honua kakaikahi, ʻoi aku ke kumukūʻai. Eia naʻe, ʻoi aku ka nānā ʻana o ka ʻoihana hana aniani i ka huina kumukūʻai o ka loaʻa ʻana (TCO), ʻo ia hoʻi, ka pono + ka hua + nā mea hoʻopau + ka hana + nā pohō hana hou. ʻO ka hopena hope loa: ʻoiai ʻoi aku ka liʻiliʻi o ka alumina, ʻoi aku ka kiʻekiʻe o kāna mau helu ʻōpala a me ka hana hou; ʻoiai ʻoi aku ke kumukūʻai o ka cerium oxide ma kēlā me kēia ʻāpana, hāʻawi ia i ka pono kiʻekiʻe, nā hemahema haʻahaʻa, a me ka hua kiʻekiʻe, e hopena ana i ka huina kumukūʻai haʻahaʻa loa. No laila, ʻo nā ʻoihana optics, nā mea kūʻai aku, a me nā ʻoihana aniani hoʻolālā hale kokoke i nā wahi āpau e koho i ka cerium oxide ma ke ʻano he pauka polishing mua.
Ma ke ʻano o ka laulā o ka noi,ʻokikene ceriumLoaʻa iā ia kahi pono piha ma aneane nā kahua āpau e koi ana i ka transparency, ka like, a me ka ʻōlinolino optical-grade, me ke aniani uhi kelepona paʻalima, nā aniani kāmela, nā kāmela kaʻa, nā ʻāpana optical laser, nā paheʻe microscope, ke aniani quartz, nā puka makani sapphire, a me ka poli maikaʻi ʻana o ke aniani hoʻolālā. I ka hoʻohālikelike ʻana, kūpono ka alumina no nā metala opaque, nā keramika, ke kila kila, nā ʻōmole, nā aniani metala, a me ka wili ʻana o ka sapphire, kahi e pono ai nā ikaika ʻoki kiʻekiʻe. I ka pōkole: koho i ka cerium oxide no nā mea moakaka, a me ka alumina no nā mea paʻakikī; koho i ka cerium oxide no ka maikaʻi o ka ʻili, a me ka alumina no ka wikiwiki ʻoki.
Ma keʻano holoʻokoʻa, ʻo ka cerium oxide, me kāna ʻano hana CMP kū hoʻokahi, ka puka makani hana paʻa, ka pono kiʻekiʻe, a me ka ʻili kiʻekiʻe, ua lilo ia i mea hoʻopili pono ʻole i nā ʻoihana aniani a me nā optics. ʻOiai he haʻahaʻa ke kumukūʻai o ka alumina a he kiʻekiʻe ka paʻakikī, ʻoi aku ka kūpono no ka hoʻopili ʻana i nā mea paʻakikī kiʻekiʻe, ʻaʻole moakaka e like me nā metala a me nā keramika. No nā ʻoihana e koi ana i nā laina hana nui, paʻa a me nā helu hemahema haʻahaʻa, ʻaʻole lawa ka alumina no nā koi hoʻopili hope loa o ke aniani moakaka, ʻoiai ʻo ka cerium oxide ka hopena maikaʻi loa no ka hoʻopau ʻana i ka ʻili huahana kiʻekiʻe.