Matsayin baƙar fata: passivation na jan karfe; inganta yanayin saman rufin ciki na foil na jan karfe, don haka haɓaka ƙarfin haɗin gwiwa tsakanin resin epoxy Kwamitin PCB da kuma ciki Layer na tagulla tsare;

Ƙarfin kwasfa

Hanyar iskar oxygen ta baƙar fata don jiyya na babban ciki na allon multilayer PCB:

PCB Multilayer Board Black oxidation magani

Hanyar PCB multilayer allon launin ruwan iskar shaka

PCB multilayer allon ƙananan zafin jiki hanyar baƙar fata

PCB multilayer Board rungumi dabi’ar babban zafin jiki baƙar fata hanya, ciki Layer allon zai haifar da high zafin jiki danniya (thermal danniya), wanda zai iya haifar da Layer rabuwa bayan lamination ko crack na ciki tagulla tsare;

1. Brown oxidation:

Samfurin baƙar iskar shaka magani na allunan Layer Layer na masana’antun PCB galibi jan ƙarfe oxide ne, babu abin da ake kira cuprous oxide. Wannan wasu kuskure ne a cikin masana’antar. Bayan bincike na ESCA (electro specific chemical analysis), za’a iya tantance bambance-bambancen atom na jan karfe da oxygen atom. Ƙarfin dauri, rabo tsakanin jan ƙarfe atom da oxygen atom a saman oxide; bayyanannun bayanai da bincike na lura sun tabbatar da cewa samfurin baƙar fata shine jan karfe oxide, kuma babu sauran abubuwan da aka gyara;

Babban abun da ke ciki na ruwan baƙar fata:

Oxidizing wakili sodium chlorite

PH buffer trisodium phosphate

Sodium hydroxide

Surfactant

Ko asali jan karfe carbonate ammonia bayani (25% ammonia ruwa)

2. Bayanai masu dacewa

1. Ƙarfin kwasfa (ƙarfin kwasfa) 1oz foil na jan karfe a saurin 2mm/min, nisa na foil ɗin jan ƙarfe shine 1/8 inch, kuma ƙarfin ƙarfi ya kamata ya zama fiye da 5 fam/inch

2. Nauyin oxide (nauyin oxide); ana iya auna ta hanyar gravimetric, gabaɗaya ana sarrafa shi a 0.2-0.5mg/cm2

3. Mahimman abubuwan da suka shafi ƙarfin hawaye ta hanyar bincike mai mahimmanci (ANDVA: nazarin ma’auni) sune:

①A maida hankali na sodium hydroxide

② Yawan sinadarin sodium chlorite

③Ma’amala tsakanin trisodium phosphate da lokacin nutsewa

④ Ma’amala tsakanin sodium chlorite da trisodium phosphate maida hankali

Ƙarfin hawaye ya dogara da cikawar resin zuwa tsarin kristal oxide, don haka yana da alaƙa da ma’auni masu dacewa na lamination da abubuwan da suka dace na resin pp.

Tsawon lu’ulu’u na acicular na oxide shine 0.05mil (1-1.5um) a matsayin mafi kyau, kuma ƙarfin hawaye a wannan lokacin yana da girma;