Udindo wa White Corundum Micropowder mu Zipangizo Zamagetsi Zopangira
Anzanu ogwira nawo ntchito, omwe amagwira ntchito mu zipangizo ndi ma CD amadziwa kuti ngakhale ma CD amagetsi akumveka bwino, kwenikweni zonse ndi zatsatanetsatane. Zili ngati kuyika suti yoteteza pa chip yamtengo wapatali. Suti iyi iyenera kupirira kugwedezeka (mphamvu ya makina), kuchotsera kutentha (kutentha), ndikupereka kukana kutentha ndi chinyezi. Zolakwika mu chilichonse mwa izi ndizofunikira. Lero, tiyang'ana kwambiri pa chinthu chomwe chimagwiritsidwa ntchito kwambiri, koma chovuta, - white corundum micropowder - kuti tifufuze momwe chosakaniza chaching'onochi chimagwirira ntchito yofunika kwambiri mu suti yoteteza iyi.
Ⅰ. Choyamba tiyeni tidziwe bwino munthu wodziwika bwino: "msilikali woyera" wa chiyero chapamwamba.
White corundumMwachidule, ndi aluminiyamu oxide yoyera kwambiri (Al₂O₃). Imagwirizana ndi corundum yofiirira yodziwika bwino, koma mzere wake ndi woyera kwambiri. Kuyera kwake kwapadera kumaupatsa mtundu woyera, kuuma kwambiri, kukana kutentha kwambiri, komanso mphamvu zokhazikika za mankhwala, zomwe zimapangitsa kuti isakhudzidwe ndi china chilichonse.
Kuipera kukhala ufa wosalala wa micron kapena nanometer-scale ndiko komwe timatchaufa woyera wa corundumMusanyoze ufa uwu. Mu zipangizo zamagetsi zopakira, makamaka epoxy molding compounds (EMC) kapena zipangizo zopakira za ceramic, si chinthu chowonjezera chabe; ndi chinthu chodzaza ndi pillar filler.
II. Kodi kwenikweni chimagwira ntchito bwanji mu phukusi?
Ganizirani za zinthu zopakira ngati chidutswa cha "simenti yopangidwa," pomwe utomoni umakhala "guluu" wofewa komanso womata womwe umagwirira chilichonse pamodzi. Koma guluu wokha sukwanira; ndi wofewa kwambiri, wofooka, ndipo umasweka ukatenthedwa. Apa ndi pomwe ufa woyera wa corundum umabwera. Uli ngati "miyala" ndi "mchenga" zomwe zawonjezeredwa ku simenti, zomwe zimakweza kwambiri magwiridwe antchito a "simenti" iyi kufika pamlingo watsopano.
Choyamba: "Njira yoyendetsera kutentha" yogwira ntchito bwino
Chip ili ngati ng'anjo yaying'ono. Ngati kutentha sikungathe kuzimitsidwa, kungayambitse kugwedezeka pafupipafupi komanso kuchedwa, kapena kutopa kwathunthu. Utomoni wokha ndi woyendetsa bwino kutentha, womwe umaletsa kutentha mkati—mkhalidwe wovuta kwambiri.
Ufa wa corundum woyeraIli ndi mphamvu yotenthetsera kutentha kwambiri kuposa utomoni. Pamene ufa wambiri wa micropowder umagawidwa mofanana mu utomoni, umapanga netiweki ya "misewu yotenthetsera" yambirimbiri. Kutentha komwe kumapangidwa ndi chip kumayendetsedwa mwachangu kuchokera mkati kupita pamwamba pa phukusi kudzera mu tinthu tating'onoting'ono ta corundum tomwe timapangidwa, kenako n’kufalikira mumlengalenga kapena m’chotenthetsera. Ufa wochuluka ukawonjezedwa komanso kukula kwa tinthu tating'onoting'ono kumafanana bwino, netiweki yotenthetsera imeneyi imakhala yolimba komanso yothina kwambiri, ndipo mphamvu yotenthetsera yonse (TC) ya zinthu zopakira imakhala yokwera. Zipangizo zapamwamba tsopano zikuyesetsa kuti pakhale mphamvu yotenthetsera yotentha kwambiri, ndipo ufa woyera wa corundum micropowder umachita gawo lotsogolera pa izi.
Luso Lapadera: "Wowongolera Kukula kwa Kutentha" Wolondola Kwambiri
Iyi ndi ntchito yofunika kwambiri! Chip (nthawi zambiri silicon), zinthu zopakira, ndi substrate (monga PCB) zonse zimakhala ndi ma coefficients osiyanasiyana a expansion ya kutentha (CTE). Mwachidule, zikatenthedwa, zimakula ndikuchepa mpaka madigiri osiyanasiyana. Ngati kuchuluka kwa zinthu zopakira kumasiyana kwambiri ndi kwa chip, kusinthasintha kwa kutentha, kutentha kozizira ndi kotentha, kumabweretsa kupsinjika kwakukulu kwamkati. Izi zili ngati anthu angapo akukoka chovala m'njira zosiyanasiyana. Pakapita nthawi, izi zingayambitse chip kusweka kapena kulephera kwa solder. Izi zimatchedwa "kulephera kwa thermomechanical."
Ufa woyera wa corundum Ili ndi mphamvu yotsika kwambiri yokulitsa kutentha ndipo ndi yokhazikika kwambiri. Kuiyika mu utomoni kumachepetsa mphamvu yokulitsa kutentha ya zinthu zonse zophatikizika, zomwe zimagwirizana kwambiri ndi silicon chip ndi substrate. Izi zimatsimikizira kuti zipangizozo zimakula ndikuchepa mogwirizana panthawi yosinthasintha kwa kutentha, kuchepetsa kwambiri kupsinjika kwamkati ndikuwonjezera kudalirika kwa chipangizocho komanso moyo wake. Izi zili ngati gulu: pokhapokha akagwira ntchito limodzi ndi pomwe angathe kuchitapo kanthu.
Maluso Oyambira: "Cholimbitsa Mafupa" Champhamvu
Pambuyo pouma, utomoni woyera umakhala ndi mphamvu ya makina, kuuma, komanso kukana kuwonongeka. Kuwonjezera ufa woyera wa corundum wouma komanso wamphamvu kwambiri kuli ngati kuyika mabiliyoni ambiri a "mafupa" olimba mu utomoni wofewa. Izi zimabweretsa zabwino zitatu zazikulu:
Kuwonjezeka kwa modulus: Zipangizozo zimakhala zolimba kwambiri ndipo sizimasinthasintha, zomwe zimateteza bwino mawaya amkati ndi agolide.
Mphamvu yowonjezereka: Mphamvu zopindika komanso zopondereza zimawonjezeka, zomwe zimapangitsa kuti zipirire kugwedezeka kwa makina ndi kupsinjika kwakunja.
Kukana Kutupa ndi Kukana Kutupa: Pamwamba pa paketiyo ndi polimba komanso potha kutopa. Kuphatikiza apo, kudzaza kokhuthala kumachepetsa njira yolowera chinyezi, zomwe zimapangitsa kuti chinyezi chisathe.
Ⅲ. Ingowonjezerani? Kulamulira khalidwe ndikofunikira!
Pakadali pano, mungaganize kuti n'zosavuta—ingowonjezerani ufa wochuluka momwe mungathere ku utomoni. Apa ndipomwe pali luso lenileni. Mtundu wa ufa wowonjezera ndi momwe ungawonjezerere ndizovuta kwambiri.
Chiyero ndiye mfundo yaikulu: Giredi yamagetsi ndi giredi wamba wothira ndi zinthu ziwiri zosiyana. Makamaka, kuchuluka kwa zinthu zosafunika zachitsulo monga potaziyamu (K) ndi sodium (Na) kuyenera kulamulidwa mpaka kufika pamlingo wotsika kwambiri wa ppm. Zonyansazi zimatha kusuntha m'magawo amagetsi ndi m'malo onyowa, zomwe zimapangitsa kuti kutayikira kwa ma circuit kapena ngakhale ma short circuit, zomwe zimawopseza kwambiri kudalirika. "Choyera" si mtundu wokha; chimayimira chiyero. Kukula kwa tinthu tating'onoting'ono ndi kugawa ndi njira yaukadaulo: Tangoganizirani ngati tinthu tating'onoting'ono tikanakhala ndi kukula kofanana, pakadakhala mipata pakati pawo. Tiyenera "kugawa" tinthu tating'onoting'ono ta kukula kosiyanasiyana kuti tinthu tating'onoting'ono tidzaze mipata pakati pa tinthu tating'onoting'ono, kuti tipeze kuchuluka kwakukulu kwa kulongedza. Kuchuluka kwa kulongedza kwakukulu kumapereka njira zambiri zoyendetsera kutentha komanso kuwongolera bwino kuchuluka kwa kutentha. Nthawi yomweyo, kukula kwa tinthu tating'onoting'ono sikuyenera kukhala kolimba kwambiri, komwe kungakhudze kusinthasintha kwa kukonza ndi kutha kwa pamwamba; komanso kosalala kwambiri, chifukwa izi zingapangitse malo akuluakulu ndikulola kuyamwa kwambiri kwa utomoni, kuchepetsa kuchuluka kwa kudzaza ndikuwonjezera ndalama. Kupanga kufalikira kwa tinthu tating'onoting'ono kumeneku ndi chimodzi mwa zinsinsi zazikulu za kapangidwe kalikonse.
Kapangidwe ka tinthu tating'onoting'ono ndi kasamalidwe ka pamwamba n'kofunika kwambiri: Mawonekedwe a tinthu tating'onoting'ono ayenera kukhala okhazikika, ofanana malo, okhala ndi ngodya zochepa zakuthwa. Izi zimatsimikizira kuti utomoni umayenda bwino ndipo zimachepetsa kupsinjika. Kukonza pamwamba n'kofunika kwambiri.White corundumNdi yokonda madzi, pomwe utomoni umadana ndi madzi, zomwe zimapangitsa kuti zisagwirizane. Chifukwa chake, pamwamba pa ufa wa micropowder uyenera kuphimbidwa ndi silane coupling agent, zomwe zimapangitsa kuti ukhale "wopangidwa ndi organic." Mwanjira imeneyi, ufawo ukhoza kuphatikizidwa bwino ndi utomoni, kupewa kuti mawonekedwe ake akhale ofooka omwe amachititsa ming'alu ikakumana ndi chinyezi kapena kupsinjika.