Chifukwa chiyani njira zotumizira gasi za UHP ndizofunika kwambiri?
Mu kupanga ma semiconductor—njira monga etching, CVD, ion implantation, ndi lithography—mpweya wa process uyenera kukhala woyera kwambiri, nthawi zambiri 99.9999% (6N) kapena 99.99999% (7N). Ngakhale zodetsa zochepa pamlingo wa ppb (zigawo pa biliyoni) kapena ppt (zigawo pa trilioni)—monga chinyezi kapena mpweya—zingayambitse zolakwika zakupha monga gate oxide thinning, metallic voids, kapena short circuits pa wafers, zomwe zingathe kuwononga malo onse.
Cholinga cha njira yoperekera mpweya ya UHP ndikunyamula mpweya kuchokera ku gwero kupita ku chida chogwirira ntchito popanda kuwonongeka kulikonse, kupewa kuipitsidwa ndi kutayikira kulikonse.
Nchifukwa chiyani EP Tubing Imakhala Msana wa Machitidwe a UHP?
Machubu a EP (electropolished) amapangidwa ndi chitsulo chosapanga dzimbiri chomwe chimapukutidwa ndi electrochemical, zomwe zimapangitsa kuti mkati mwake mukhale ngati galasi. Izi zimapangitsa kuti ikhale "mtsempha" wofunikira kwambiri pakugawa mpweya wa UHP.
Ukhondo Wapamwamba - Kupewa Komwe Kumachokera
Kukonza EP kumachepetsa kuuma kwa mkati mwa pamwamba (Ra) kufika pa 0.13 µm – 0.25 µm kapena kutsika. Kumaliza kosalala kwambiri kumeneku kumachotsa ming'alu yaying'ono ndi malo otsetsereka, osasiya malo oti tinthu tating'onoting'ono, ayoni achitsulo, kapena chinyezi zigwirizane.
Kulimbana ndi Dzimbiri Kwambiri - Kusunga Chiyero
Gawo loyeretsera magetsi limachotsa zonyansa pamwamba ndikupanga gawo lopanda mpweya wochuluka wa chrome-oxide, zomwe zimapangitsa kuti pakhale kukana kwa mpweya wowononga monga Cl₂, CF₄, ndi HCl. Izi zimaletsa dzimbiri la makoma a mapaipi lomwe lingapangitse tinthu tating'onoting'ono kapena kuipitsidwa ndi mpweya.
Kugwira Ntchito Bwino Kwambiri ndi Kuyeretsa Mwachangu
Khoma losalala lamkati limachepetsa kukana kwa madzi kuyenda ndipo limafulumizitsa kutsuka kwa makina ndi kusintha kwa mpweya. Mu njira zomwe zimafuna kusintha kwa mpweya mwachangu, izi zimafupikitsa nthawi yozungulira ndikuwonjezera mphamvu yogwira ntchito.
Zinthu Zapamwamba - Muyezo wa "Korona"
Machubu apamwamba a EP amapangidwa kuchokera ku chitsulo chosapanga dzimbiri cha 316L VIM-VAR (Vacuum Induction Melting + Vacuum Arc Remelting). Njira yosungunula kawiri iyi imatsimikizira kuyera kwakukulu kwa chitsulo choyambira, chomwe ndi chofunikira kwambiri kuti EP igwire bwino ntchito.
Zochitika Zofunikira Zogwiritsira Ntchito
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Njira Zapakati- Kutumiza mpweya woyeretsa kwambiri kuti ugwiritsidwe ntchito pochotsa ma ion, CVD, ndi lithography.
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Mpweya Wapadera– Kusamalira bwino mpweya woyaka, woopsa, kapena wowononga monga SiH₄, PH₃, Cl₂, ndi BCl₃. Pa mpweya woopsa kwambiri, nthawi zambiri pamagwiritsidwa ntchito mapaipi awiri a EP (chubu chamkati cha mpweya, jekete lakunja lochotsedwa kapena kutsukidwa ndi nayitrogeni kuti muwonetsetse kutuluka kwa madzi).
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Zipangizo Zofunika Kwambiri- Amagwiritsidwa ntchito m'magawo ogawa gasi (VMBs), makabati a gasi, ndi zida zolumikizira komwe malo amkati oyera kwambiri ndi ofunikira.
Kupitilira pa Tubing: Zina Zofunikira pa Dongosolo Lonse la UHP
Kuti zitsimikizidwe kuti zonse zili bwino, dongosololi liyeneranso kuphatikizapo:
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Kuwotcherera Kozungulira Kokha Kokha- Zimachitidwa mu ISO Class 5 (Class 100) kapena m'zipinda zoyera zabwino, zomwe zimachotsa kusiyana kwa kuwotcherera ndi manja komanso zoopsa zodetsa.
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Zovala Zosefera Pankhope Zachitsulo Zonse- Monga mitundu ya VCR® kapena W Seal, yomwe imadalira ma gasket achitsulo kuti isatuluke konse.
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Kuyeretsa ndi Kulongedza Zinthu Mwachangu– Machubu a EP nthawi zambiri amatsukidwa ndi madzi oyera kwambiri, amaumitsa, ndikutsukidwa ndi nayitrogeni asanaikidwe m'matumba awiri m'matumba oyera kuti asunge ukhondo wawo "womwe watumizidwa" mpaka atayikidwa.
Kuyika chubu cha EP si chitoliro chokha—ndi mzere woyamba woteteza pakutumiza mpweya wa semiconductor. Malo ake osalala kwambiri, kukana dzimbiri kwambiri, komanso kuyera kwa zinthu zapamwamba zimakhudza mwachindunji kukolola kwa wafer, kudalirika kwa chipangizo, komanso phindu lonse lapamwamba. M'dziko la ma node a sub‑5nm komanso bajeti yolimba ya zolakwika, kuyika chubu cha EP sikofunikira—ndi maziko.
Nthawi yotumizira: Ogasiti-05-2026