(CeramicByakozwe naWintrusetk)
Ceramic metallisationni tekinike yo kubitsa ibyuma bifatanye cyane hejuru yubutaka. Iyi ni intambwe yingenzi kuva keramika isanzwe idashobora kugurishwa kubagurisha. Icyuma cyuma gituma gishobora kugurishwa, gitanga umusingi ukenewe wo gukora ceramic-to-metal ihuza.
Hasi ni incamake yuburyo bune bwibanze bukoreshwa munganda muri iki gihe.
1. Molybdenum-Manganese (Mo-Mn)Uburyo: Igipimo cyinganda
UwitekaMo-Mninzira niyo ikoreshwa cyane kandi yashizweho neza tekinoroji ya ceramic metallisation. Kuva mu kinyejana cya 20 rwagati, ni bwo buryo busanzwe bwo gukora kashe yizewe cyane mu bikoresho bya elegitoroniki ya vacuum no mu kirere.
Ihame ry'ibikorwa:gutegura ifu ya molybdenum yangiritse, ifu ya manganese, hamwe nababikora (urugero: Al2O3, SiO2, na CaO) muguhuza kama. Iyi shitingi ikoreshwa hejuru yubutaka bwa ceramic kandi ikayungurura ubushyuhe bwinshi (1300-1600 ° C) mubidukikije bya hydrogène bitose (ikime = = 30 ° C).
Ibyiza: Itanga imbaraga zo gufunga (kugera kuri 60.2 ± 7.7 MPa hamwe nuburyo bukoreshwa) hamwe no gukomera kwinshi (hamwe nigipimo cyo kumeneka kiri munsi ya 2.3 × 10⁻¹¹ Pa · m³ / s). Inzira yemerera gusubiramo inshuro nyinshi ninyungu ziva mugari, inzira yo kubabarira.
Imipaka:Ubushyuhe bwo hejuru burashobora guhindura ibiranga ceramic. Inzira ikenera ibikoresho bya hydrogène nini cyane, bikavamo igihe kirekire. Ikigeretse kuri ibyo, ntishobora kubangikanya nubutaka butari oxyde nka AlN mugihe hatabayeho inzira ya okiside.
2. Uburyo bwo gufatanya kurasa: Gushoboza ibyuma byinshi
Uburyo bwo gufatanya kurasa bwinjiza ibyuma muburyo bwo gucumura ceramic. Intego nyamukuru ni "gufatanya kurasa icyatsi kibisi," gikubiyemo gucapisha ecran icyuma cyoroshye (nka tungsten, molybdenum, cyangwa molybdenum-manganese) kumpapuro zubutaka zidacanwa (icyatsi). Izi mpapuro zirahuzwa hanyuma zigahuzwa hamwe kugirango zuzuze ceramic densification hamwe na metallisation y'imbere mu ntambwe imwe.
3. Umuringa utaziguye (DBC)ni Optimised for Power Dissipation
Umuringa utaziguye (DBC)yakozwe mu myaka ya za 70 kandi yabanje gucuruzwa na GE muri Amerika. Ubu byahindutse ikoranabuhanga risanzwe ryimbaraga nyinshi za IGBT hamwe na LED ubushyuhe bwo gukwirakwiza. Ubu buryo bukubiyemo guhuza umuringa wumuringa na ceramic substrate, bikavamo imiterere ifite ubushyuhe bwinshi hamwe n’amashanyarazi.
4. Gukora Ibyuma Bikora (AMB): Impinduramatwara Yintambwe imwe
Active Metal Brazing (AMB) nudushya twinshi duhuza metallisation na brazing muburyo bumwe, bworoshye. Ibi birangizwa no kumenyekanisha ibintu bifatika, nka Ti, Zr, Nb, cyangwa V, mu buryo butaziguye ibyuma byuzuza ibyuma. Ku bushyuhe bwinshi, ibyo bintu byifashishwa muburyo bwa ceramic kugirango bibyare urwego rwimiterere hamwe nuburinganire bwumuringa. Ingero zirimo TiO, TiN, na Cu3Ti3O. Uru rupapuro rutuma ibyuma byuzuza byuzuza ububobere bwa ceramic.
Ibiranga inzira:
Akazi koroheje: Kurandura ibikenewe mbere yintambwe yambere.
Ubushyuhe bwo Gutunganya Hasi: Gukonjesha bibaho ku bushyuhe buke (800-950 ° C).
Igenzurwa rya Atmosifike: Kora mu kirere cyangwa mu kirere cyinshi cyane kugira ngo wirinde okiside yibigize.
Guhindura Ibikoresho: Bikwiranye nubutaka nka Al2O3, AlN, na Si3N4.
