Te Paura Whakakanapa o te Cerium Oxide me te Paura Whakakanapa o te Konumohe Oxide: He Tātaritanga Whakatairite Whānui
I roto i te miihini tika i roto i ngā ahumahi karāhe me te whatu tirohanga, ko te paura oro te rauemi matua e whakatau ana i te kounga o te mata whakamutunga, te kanapa, me te tere o te hapa.Te waikura cerium (CeO₂)Ko te waikura konumohe (Al₂O₃) ngā rauemi whakakanapa e rua e whakamahia whānuitia ana, engari he rerekē rawa te hanganga rauemi, te tikanga whakakanapa, te pakeke, te whai huatanga, me te pānga o te mata whakamutunga. Nō reira, ko te whiriwhiri tika i te paura whakakanapa kāore e pā noa ki te whai huatanga tukatuka engari ka pā tika hoki ki te hua me te utu katoa o te hua kua oti. Ko te waikura cerium, hei rauemi whenua onge, he āhua motuhake o te Ce³⁺/Ce⁴⁺ ka taea te huri, ka taea ai e ia te whakaputa i tētahi tauhohenga matū iti ina pā ki ngā silicates i roto i te karāhe. Ka puta he paparanga tauhohenga whakangawari tino angiangi ki runga i te mata karāhe i te wā e whakakanapahia ana, ka tangohia mārire mā te mahi tahi o te papa whakakanapa me te nekehanga miihini. Ko tēnei tikanga tango hiato "matū + miihini" e mōhiotia ana ko te CMP (Chemical Mechanical Polishing), koinei te take matua he tere, he whai hua te whakakanapa waikura cerium, ā, he iti rawa ngā hapa o te mata. He rerekē, ko te alumina he mea whakakanapa miihini tuku iho me te pakeke Mohs o te 9, tuarua ki te corundum me te taimana. Ko te tukanga whakakanapa e whakawhirinaki katoa ana ki ngā taha koi, te pakeke, me te kaha o waho o ngā matūriki, e tohu ana i te huri ā-ringa parakore noa iho, kāore he paparanga whakangawari matū. Nō reira, he pakari ake te tukanga tango, ā, he ngāwari ki te whakaputa i ngā karawarawa hohonu ake, inā koa ka kitea i roto i te whakakanapa o te karāhe mārama.
Mō te pakeke o te rauemi, ko te pakeke o te cerium oxide he tata ki te 6, he tata ki te karāhe, ā, he ngawari ake ina pā ki ngā rauemi mārama, ā, tata kore rawa ngā karawarawa hohonu. Ko te Alumina, he pakeke 9, he pai mō ngā rauemi pakeke-teitei pērā i ngā konganuku, ngā uku, me te whakakanapa tuatahi o te hapaira. Heoi, ina whakamahia ki te karāhe, me whakaiti te pēhanga kia kore ai e puta he mutunga matte, he karawarawa, he kapiti moroiti rānei, ka heke te mārama. Mō ngā mata whatu-ā-kanohi, he iti ake te pumau o te alumina i te cerium oxide. Mō te rahi o te matūriki, ka taea e ngā mea e rua te whakatutuki i te whānuitanga o te 0.3–3 μm, engari ko ngā matūriki cerium oxide he porowhita ake, ā, he whaiti ake te tohatoha rahi o te matūriki, ā, he pai ake mō te whakakanapa pai; he koi ake ngā taha o ngā matūriki alumina, ā, he pai ake mō te tapahi tere. Mō te whakatārewatanga,waikura cerium, i muri i te whakarerekētanga o te mata, ka mau tonu te tino marara i roto i ngā paru whakakanapa, kāore e ngāwari ki te kohikohi, ki te whakatō rānei, ā, he tino pai mō te tukatuka tonu mō te wā roa. Ko te Alumina ia, he nui ake te mātotoru, ā, ka tere ake te taunga, me whakaoho tonu, ā, kāore i te tino pai mō ngā raina whakaputa aunoa.
Ki te whakataurite i te pai o te whakakanapa, nā te mea he paparanga tauhohenga matū te cerium oxide, ka nui ake te tere tango rauemi (MRR) me te pupuri tonu i te kounga o te mata, e whakaatu ana i te pumau, inā koa i roto i te tukatuka tonu o te karāhe whānui, ngā karāhe whatu, me ngā pereti uhi waea pūkoro. Ahakoa he pakeke te alumina, ā, he tere te tango i te ariā, he tino whakawhirinaki ki te kaha o waho me te koki tapahi, he whaiti te matapihi tukanga, ā, he ngawari ki te karawarawa ahakoa he pēhanga teitei ake. Nō reira, i roto i te hanga papatipu tuturu, he iti ake te pumau i te cerium oxide, ka iti ake te pai. He nui ake te kitea o te rerekētanga o te kounga o te mata.Waikura ceriumka taea te whakatutuki i ngā mata kounga-whatu me te Ra < 1 nm, te mārama teitei, me te kore rawa o te mutunga matte, ka waiho hei whiringa pai mō ngā arotahi, ngā wāhanga whatu taiaho, ngā matapihi hapaira, me te karāhe kounga teitei. Nā te huri ā-mīhini parakore, ka puta he maha ngā taumata o ngā karawarawa, ngā paparanga ahotea, me ngā kino o raro i te mata o te Alumina, ka hua ake he hekenga nui o te mārama. Mō ngā tukanga pēnei i te oro whakamutunga o te karāhe waea pūkoro, te oro pai o ngā kāmera, me te oro o ngā matapihi whatu haurua-ira, kāore i te rawaka te alumina, ā, ka taea anake te whakamahi mō te oro matapōkere tuatahi.
Mai i te tirohanga hototahi tukanga, he ngāwari ake te urutau o te waikura cerium, he iti ake te aro ki ngā tawhā pēnei i te pH, te papa whakakanapa, te pēhanga, me te tere, ā, he ngāwari ake te whakarite. I tetahi atu taha, he tino aro te Alumina ki te pēhanga me te tere hurihuri; ka taea e te whakahaere hē te hua ake he rakuraku, he mata koretake rānei, ka whakawhāiti i tōna matapihi tukatuka. Hei tāpiri, ka tere te tau o te alumina, ka nui ake ngā utu tiaki me te uaua ake o te whakahaere tukanga. Mō te utu, he iti ake te utu o te alumina mō ia waeine, engari he iti ake te utu o te waikura cerium, hei rauemi whenua onge. Heoi, ko te ahumahi tukatuka karāhe e aro nui ana ki te utu katoa o te mana (TCO), arā, te whai hua + te hua + ngā mea pau + te mahi + ngā ngaronga mahi anō. Ko te whakatau whakamutunga ko: ahakoa he iti ake te utu o te alumina, he teitei ake ōna tere rakuraku me te mahi anō; ahakoa he nui ake te utu o te waikura cerium mō ia waeine, he nui ake te whai hua, he iti ake ngā hapa, me te hua nui ake, ka hua ake he iti ake te utu katoa. Nō reira, ko te nuinga o ngā ahumahi karāhe whatu, hikohiko kaihoko, me te hoahoanga e whiriwhiri ana i te waikura cerium hei paura whakakanapa matua.
Mō te whānuitanga o te tono,waikura ceriumHe tino painga tēnei mō te nuinga o ngā mara e hiahia ana ki te mārama, te ōrite, me te kanapa o te karaehe whatu, tae atu ki te karāhe uhi waea pūkoro, ngā arotahi kāmera, ngā kāmera motuka, ngā wāhanga whatu taiaho, ngā kiriata karu hiko, te karāhe kuata, ngā matapihi hapaira, me te whakakanapa pai o te karāhe hoahoanga. He rerekē, he pai te alumina mō ngā konganuku matapōkere, ngā uku, te maitai kore waikura, ngā pokepokea, ngā whakaata whakarewa, me te huri taratara o te hapaira, ina hiahiatia he kaha tapahi teitei. Hei whakarāpopototanga: whiriwhiria te waikura cerium mō ngā rauemi mārama, me te alumina mō ngā rauemi mārō; whiriwhiria te waikura cerium mō te kounga o te mata, me te alumina mō te tere tapahi.
I te nuinga o te wā, ko te cerium oxide, me tana tikanga CMP ahurei, te matapihi tukanga pumau, te whai huatanga teitei, me te mata kounga teitei, kua waiho hei rauemi whakakanapa nui i roto i ngā ahumahi karāhe me ngā ahumahi whatu. Ahakoa he iti te utu o te alumina, he nui hoki te pakeke, he pai ake mō te whakakanapa i ngā rauemi pakari teitei, kāore i te mārama pērā i ngā konganuku me ngā uku. Mō ngā kamupene e hiahia ana ki ngā raina whakaputa nui, pumau me ngā reiti hapa iti, kāore i te rawaka te alumina mō ngā whakaritenga whakakanapa whakamutunga o te karāhe mārama, ko te cerium oxide te otinga pai rawa atu mō te whakaotinga mata hua kounga teitei.