(Metallized CeramicZopangidwa ndiWintrusetk)
Ceramic metallizationndi njira yokhazikitsira zitsulo zomatira kwambiri pamiyala ya ceramic. Ichi ndi sitepe yofunika kwambiri chifukwa zitsulo zadothi sizimatenthedwa kuti zisagulitsidwe. Zosanjikiza zitsulo zimawapangitsa kuti azigulitsa, kupereka maziko ofunikira kuti apange kulumikizana kolimba kwa ceramic-to-metal.
Pansipa pali chithunzithunzi cha njira zinayi zoyambirira zomwe zimagwiritsidwa ntchito pamakampani masiku ano.
1. Molybdenum-Manganese (Mo-Mn)Njira: Industrial Standard
TheMo-MnNjira ndiyo ukadaulo wogwiritsidwa ntchito kwambiri komanso wokhazikika bwino wa ceramic metallization. Kuyambira pakati pa zaka za m'ma 2000, yakhala njira yokhazikika yopangira zisindikizo zodalirika kwambiri mumagetsi opukutira komanso kugwiritsa ntchito ndege.
Mfundo Yoyendetsera Ntchito:Kukonzekera slurry wa ufa wa refractory molybdenum, ufa wa manganese, ndi zoyambitsa (monga Al2O3, SiO2, ndi CaO) mu binder organic. Dothi lotereli limagwiritsidwa ntchito pamtunda wa ceramic ndikuwotcha kutentha kwambiri (1300-1600 ° C) m'malo otsekemera a haidrojeni (mame = +30 ° C).
Ubwino: Amapereka mphamvu yosindikizira kwambiri (kufikira 60.2±7.7 MPa ndi njira yotsegulira) komanso kutsekeka kwa vacuum kwabwino kwambiri (ndi kutayikira kotsika ngati 2.3×10⁻¹¹ Pa·m³/s). Njirayi imalola kukonzanso kangapo ndikupindula kuchokera pawindo lalikulu, lokhululukira.
Zolepheretsa:Kutentha kwambiri kwa sintering kumatha kusintha mawonekedwe a ceramic. Njirayi imafunikira zida zazikulu za ng'anjo ya haidrojeni, zomwe zimapangitsa kuti pakhale nthawi yayitali yozungulira. Kuphatikiza apo, ndizosemphana ndi ma ceramics osakhala ndi okusayidi monga AlN pakalibe njira ya pre-oxidation.
2. Njira Yoombera limodzi: Yambitsani Mawaya Osiyanasiyana
Njira yowombera pamodzi imaphatikizanso zitsulo mwachindunji munjira yopangira sintering ya ceramic. Cholinga chachikulu ndi "kuwombera zitsulo zobiriwira," zomwe zimaphatikizapo kusindikiza phala lachitsulo (monga tungsten, molybdenum, kapena molybdenum-manganese) pamapepala a ceramic osayaka (obiriwira). Mapepalawa amalumikizidwa ndikuphatikizidwa pamodzi kuti amalize kachulukidwe ka ceramic ndi zitsulo zamkati mu sitepe imodzi.
3. Direct Bonded Copper (DBC)ndi Optimized for Power Dissipation
Direct Bonded Copper (DBC)idapangidwa mu 1970s ndipo poyambilira idagulitsidwa ndi GE ku United States. Tsopano yakhala ukadaulo wokhazikika wa ma module amphamvu kwambiri a IGBT ndi magawo otulutsa kutentha kwa LED. Njirayi imaphatikizapo kumangirira mwachindunji zojambulazo zamkuwa ku gawo lapansi la ceramic, zomwe zimapangitsa kuti pakhale dongosolo lokhala ndi kutentha kwakukulu komanso kutsekemera kwamagetsi.
4. Active Metal Brazing (AMB): Kusintha Kwachisindikizo Chimodzi
Active Metal Brazing (AMB) ndi luso lofunikira lomwe limaphatikiza zitsulo ndi zitsulo kukhala njira imodzi yophweka. Izi zimatheka poyambitsa zinthu zogwira ntchito, monga Ti, Zr, Nb, kapena V, molunjika kuzitsulo zodzaza zitsulo. Pakutentha kwambiri, zinthuzi zimachita mogwirizana ndi ceramic kuti zipangitse kusanjikizana ndi chitsulo chomangira. Zitsanzo zikuphatikizapo TiO, TiN, ndi Cu3Ti3O. Chosanjikiza ichi chimalola chitsulo chodzaza ndi brazing kuti chinyowetse pamwamba pa ceramic mwachindunji.
Makhalidwe a ndondomeko:
Mayendedwe Osavuta: Kumathetsa kufunikira kwa sitepe yosiyana yopangira zitsulo.
Kutentha Kochepa Kwambiri: Kutentha kumachitika pakatentha kwambiri (800–950°C).
Controlled Atmosphere: Chitani mu vacuum kapena chiyero chapamwamba chopanda mpweya kuti mupewe oxidation ya zigawo zogwira ntchito.
Kusinthasintha Kwazinthu: Zoyenera pazida zadothi monga Al2O3, AlN, ndi Si3N4.
