Yuav ua li cas hais txog txheej txheem kev kho saum npoo ntawm aluminium substrate pcb ? Yongmingsheng thev naus laus zis rau ntawm txhuas txheej txhuas pcb saum npoo los ua qee cov kab lus.

Tom qab cov khoom siv hluav taws xob tau tso rau hauv cov ntawv luam tawm hauv Circuit Court, lawv yuav tsum tau txiav nyiaj ncaj qha.Hauv cov txheej txheem no, yog tias muaj cov khoom ua npuas ncauj, ntxiv rau cov ntawv luam tawm Circuit board ua cov thev naus laus zis tsis tsim nyog, tab sis kuj muaj feem xyuam rau kev siv lub tshuab nqus hluav taws xob tsis ua haujlwm ntawm aluminium substrate.Qhov tsis zoo soldering tsis kam ntawm aluminium substrate ua rau kev txo qis ntawm qhov system stability zoo ntawm qhov zoo tshaj plaws, thiab ua rau tag nrho cov tivthaiv qhov tsis zoo.

Aluminium substrate yog cov khoom sib txuas ntawm cov khoom siv roj, aluminium thiab tooj liab foil.Resin thiab txhuas, tooj liab foil thermal expansion coefficient yog qhov sib txawv heev, yog li ntawd, nyob rau sab nraud quab yuam, nyob rau hauv kev txiav txim siab ntawm tshav kub, tsim tawm tsis sib luag ntawm sab hauv hauv lub phaj. Yog tias dej lwg me me thiab qee qhov teeb meem molecular tseem nyob hauv lub qhov hws ntawm phaj phaj, qhov kev ntxhov siab ntau yuav loj dua nyob rau hauv qhov xwm txheej ntawm thermal poob siab.

Yog tias cov nplaum tsis ua tiav cov teeb meem hauv sab hauv, lamination thiab foaming yuav tshwm sim ntawm cov ntawv ci tooj liab thiab cov txheej nruab nrab, lossis nruab nrab txheej txheej, ntawm qhov tsis muaj zog interface.Yog txhim kho solder kuj ntawm txhuas txheej, nws yog qhov tsim nyog los txo qis yam uas yuav rhuav tshem cov qauv ntawm txhua qhov chaw hauv qhov sib sau thiab qhov kub thiab txias ntawm lub phaj.Qhov kev txhim kho txoj hauv kev tsuas yog suav nrog kev kho saum npoo ntawm cov ntawv ci tooj liab thiab txhuas, txhim kho ntawm cov ntaub nplaum, thiab kev tswj qhov siab thiab kub hauv qhov txheej txheem ntawm nias.

Kev sib zog lub zog ntawm aluminium interface feem ntau txiav txim siab los ntawm ob ntu:

Ua ntej, txhuas hauv paus thiab lub txhuas aluminium base phaj ua (thermal rwb thaiv tsev lub nplaum tseem ceeb los yog lub nplaum) nplaum lub zog;

Qhov thib ob, nws yog cov nplaum siv nruab nrab ntawm cov nplaum thiab cov nplaum.

Yog tias cov kua nplaum tuaj yeem txeem mus rau txheej txheej saum npoo ntawm txhuas cov khoom siv tau zoo, thiab cov txheej txheem aluminium txheej txheem tuaj yeem sib txuas nrog kev sib txuas nrog cov khoom siv hluav taws xob kom zoo, ntau dua tev lub zog ntawm aluminium substrate tuaj yeem lav.

Aluminium saum npoo kev kho mob yog oxidation, xaim xaim, thiab lwm yam, yog los ntawm kev nthuav dav hauv cheeb tsam kom txhim kho qhov adhesion. Feem ntau, qhov chaw saum npoo ntawm oxidation muaj ntau dua li qhov ntawm kev kos duab, tab sis oxidation nws tus kheej kuj sib txawv.

Qhov saum toj no yog txhuas txheej sab nrauv aluminium nto kho tshuab.we yog cov chaw tsim tshuaj paus kev lag luam txhuas txheej txheem. Kuv vam tias qhov no tsab xov xwm yuav pab tau koj.