KUBAZA
Silicon Nitride Substrates Kubyongerewe imbaraga za Electronics
2023-03-08


Power Electronics


Ibishushanyo mbonera byimbaraga nyinshi muri iki gihe bishingiye ku bukerarugendo bukozwe muri aluminium oxyde (Al2O3) cyangwa AlN, ariko uko ibisabwa bigenda byiyongera, abashushanya bareba mu zindi nteruro. Muri porogaramu za EV, kurugero, guhindura igihombo bigabanukaho 10% mugihe ubushyuhe bwa chip buva kuri 150 ° C bukagera kuri 200 ° C. Mubyongeyeho, tekinolojiya mishya yo gupakira nkibicuruzwa bitagurishijwe hamwe na moderi idafite insinga zituma insimburangingo ihari ihuza intege nke.


Ikindi kintu cyingenzi nuko ibicuruzwa bigomba kumara igihe kirekire mubihe bibi, nkibiboneka muri turbine. Ikigereranyo cyubuzima bwa turbine yumuyaga mubihe byose bidukikije ni imyaka cumi n'itanu, bigatuma abashushanya iyi porogaramu bashaka tekinoroji yo hejuru yubutaka.


Kongera imikoreshereze yibikoresho bya SiC nikintu cya gatatu gitera kuzamura ubundi buryo butandukanye. Ugereranije nuburyo busanzwe, modul ya mbere ya SiC hamwe nububiko bwiza bwerekanaga igabanuka ryigihombo cya 40 kugeza 70%, ariko kandi ryerekanaga ko hakenewe tekiniki zo gupakira ibintu bishya, harimo na Si3N4. Izi mpinduka zose zizagabanya imikorere yigihe kizaza ya gakondo ya Al2O3 na AlN, mugihe insimburangingo ishingiye kuri Si3N4 izaba ibikoresho byo guhitamo ejo hazaza h'imbaraga zikomeye.


Nitride ya Silicon (Si3N4) ikwiranye nimbaraga za elegitoroniki yububasha kubera imbaraga zayo zunamye, gukomera kuvunika cyane, hamwe nubushyuhe bwinshi. Ibiranga ceramic no kugereranya impinduka zikomeye, nko gusohora igice cyangwa gushiraho ibice, bigira ingaruka zikomeye kumyitwarire ya nyuma ya substrate, nkubushyuhe bwimyitwarire hamwe nubushuhe bwamagare.


Ubushyuhe bwumuriro, imbaraga zunama, hamwe no gukomera kuvunika nibintu byingenzi mugihe uhitamo ibikoresho byokoresha amashanyarazi. Amashanyarazi menshi ni ngombwa kugirango ikwirakwizwa ryihuse ryubushyuhe muri module yingufu. Imbaraga zunama ningirakamaro muburyo ceramic substrate ikoreshwa kandi igakoreshwa mugihe cyo gupakira, mugihe gukomera kuvunika ari ngombwa mugushakisha uko bizabera.

 

Ubushyuhe buke bwumuriro hamwe nubukanishi buke buranga Al2O3 (96%). Nyamara, ubushyuhe bwumuriro wa 24 W / mK burahagije kubwinshi mubikorwa bisanzwe byinganda zikoreshwa muri iki gihe. Ubushyuhe bukabije bwa AlN bwa 180 W / mK ninyungu zayo zikomeye, nubwo bwizewe buringaniye. Nibisubizo byuburemere buke bwa Al2O3 nimbaraga zigereranywa.


Kwiyongera gukenewe kwizerwa kwinshi byatumye iterambere rya vuba muri ZTA (zirconia toughened alumina) ceramics. Ubukorikori bufite imbaraga zikomeye zo kugonda no gukomera kuvunika kuruta ibindi bikoresho. Kubwamahirwe, ubushyuhe bwumuriro wa ZTA ceramics buragereranywa nubwa Al2O3 isanzwe; nkigisubizo, imikoreshereze yabo yingufu-nyinshi zikoreshwa hamwe nubucucike bukabije burabujijwe.


Mugihe Si3N4 ikomatanya uburyo bwiza bwumuriro nubukanishi. Ubushuhe bwumuriro burashobora gutomorwa kuri 90 W / mK, kandi gukomera kwayo kuvunika nimwe murwego rwo hejuru mubutaka bugereranijwe. Ibi biranga byerekana ko Si3N4 izerekana ubwizerwe buhebuje nka substrate yicyuma.


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