Indima yeSodium Cyanide kwiMetal Electroplating

intshayelelo

I-Electroplating yinkqubo yemizi-mveliso esetyenziswa ngokubanzi ebandakanya ukubeka umaleko obhityileyo wesinyithi kwi-substrate, ngokuqhelekileyo ngeenjongo ezinjengokukhusela umhlwa, ukuphucula inkangeleko, kunye nokuphucula iipropati zomphezulu wezinto eziphathekayo. Isodium i-cyanide (I-NaCN), ngaphandle kwemeko yayo enetyhefu kakhulu, idlala indima ebalulekileyo kwiinkqubo ezininzi ze-electroplating. Eli nqaku lingena kwimisebenzi ethile kunye nokubaluleka Isodium cyanide in I-Metal electroplating.

Iipropati zeMichiza yeSodium Cyanide eNxulumene ne-Electroplating

I-sodium cyanide yi-inorganic compound. Inyibilika kakhulu emanzini, eyipropathi ephambili yokusetyenziswa kwayo kwiibhafu ze-electroplating. Kwisisombululo esinamanzi, siyahlukana sibe yi-sodium ions (Na +) kunye ne-cyanide ions (CN-). Iiyoni ze-cyanide zibaluleke kakhulu kwi-electroplating njengoko zinomdla oqinileyo wokwenza ii-complexes ngee-ion zetsimbi.

Imisebenzi kwiiBhafu ze-Electroplating

Ukuxakeka kunye ne-Metal Ions

Omnye wemisebenzi ephambili ye Isodium cyanide kwi-electroplating kukwenza ii-metal-cyanide complexes kunye neeoni zetsimbi kwisisombululo se-plating. Umzekelo, kwindawo yokuhlambela yobhedu, sodium cyanide idibana neeyoni zobhedu (ukusuka kwityuwa yobhedu efana necopper sulfate okanye icopper cyanide). Iiyoni zecyanide zilungelelaniswa neeyoni zobhedu ukwenza iikhompleksi zekopha-cyanide ezizinzileyo, ezifana neCu(CN)₂⁻ kunye neCu(CN)₃²⁻. Ezi zixhobo zinezinzile ezahlukeneyo kunye ne-dissociation constants kuxhomekeke kumlinganiselo weeyoni zethusi ukuya kwi-cyanide ion kwisisombululo. Ukubunjwa kwezi zixhobo kubalulekile kuba kuchaphazela ukuziphatha kwee-ion zetsimbi ngexesha lenkqubo ye-electroplating.

Ukunciphisa i-Anode Polarization

Kwiseli ye-electroplating, i-anode ngumthombo wee-ion zetsimbi zokubekwa kwi-cathode (i-substrate ifakwe). I-anode polarization ingenzeka xa indawo ye-anode igutyungelwe ngoluhlu lweemveliso zokuphendula okanye xa izinga lokuchithwa kwesinyithi kwi-anode linganele ukugcina ukunikezelwa rhoqo kwee-ion zetsimbi kwisisombululo. Isodium cyanide inceda ukunciphisa i-anode polarization. I-cyanide ions kwisisombululo isabela ngetsimbi kwindawo ye-anode, iququzelele ukuchithwa kwe-anode metal. Ngokomzekelo, kwi-anode yobhedu, ii-ion ze-cyanide zisabela nge-athomu zobhedu ukuze zenze ii-complexes ze-copper-cyanide ezinyibilikayo, ezithi zingene kwisisombululo. Oku kuqinisekisa ukunikezelwa okufanayo kunye nokuqhubekayo kwee-ion zetsimbi ukusuka kwi-anode, ekhokelela kwinkqubo ezinzileyo kunye nesebenzayo ye-electroplating.

Ukuzinzisa isisombululo se-Electroplating

I-sodium cyanide nayo inegalelo ekuzinzeni kwesisombululo se-electroplating. I-ion zesinyithi kwisisombululo zinokusabela kunye namanye amacandelo kwindawo yokuhlambela, njengokungcola okanye amanzi, ukwenza i-precipitates okanye ukufumana iimpendulo ezingafunekiyo. Ukuqulunqwa kwee-metal-cyanide complexes kuzinzisa i-ion zetsimbi, zithintele ukuba zithathe inxaxheba kule mpendulo engathandekiyo. Ngokomzekelo, ii-complexes ze-copper-cyanide ezenziwe phambi kwe-sodium cyanide zizinzile ngaphezu kwee-ion ze-copper zamahhala, zinciphisa amathuba okuba ne-copper hydroxide precipitation kwi-alkaline electroplating bath.

Ukuphucula iCathode Polarization

Kwi-cathode, apho i-ion yensimbi iyancitshiswa kwaye ifakwe kwi-substrate, i-polarization efanelekileyo ibalulekile ekufezekiseni i-coating yentsimbi egudileyo kunye ehambelanayo. Isodium cyanide yongeza i-cathode polarization. I-metal-cyanide complexes zikhulu kwaye zinezinga elithile lentlawulo ye-delocalization ngenxa yokulungelelaniswa kunye ne-cyanide ions. Njengoko ezi zixhobo zisondela kwi-cathode, inkqubo yokunciphisa ilawulwa ngakumbi xa kuthelekiswa nokunciphisa i-ion zetsimbi zamahhala. Oku kubangela ukubekwa okufanayo kwentsimbi kumphezulu wecathode. I-polarization ye-cathode ephuculweyo ikhokelela ekukhuleni okuncinci kwekristale ngexesha lenkqubo yokubeka, okukhokelela ekutyeni okucolekileyo kunye nokwaleka kwesinyithi okufanayo kunye nokuncamathela okungcono kwi-substrate.

Izicelo kwiiNkqubo zeMetal zokuPlatha ezahlukeneyo

Ukucwenga ubhedu

Kwi-electroplating yobhedu, i-sodium cyanide isetyenziswa kakhulu, ngakumbi kwizicelo apho kufuneka idiphozithi yobhedu ehambelana nomgangatho ophezulu. Iibhafu ze-cyanide ezisekelwe kwi-copper zinika amandla abalaseleyo okuphosa, okuthetha ukuba banokufaka umaleko ofanayo wobhedu kwizinto ezintsonkothileyo. I-copper-cyanide complexes eyenziwe phambi kwe-sodium cyanide ivumela ulawulo oluchanekileyo lwezinga lokubeka ubhedu, okukhokelela ekugqityweni kobhedu olugudileyo noluqaqambileyo. Oku kuyenza ifaneleke kwizicelo ezinje nge-decorative plating kwizacholo, izihlanganisi zombane, kunye neebhodi zesekethe eziprintiweyo.

Ukucwenga kweSilivere

I-sodium cyanide nayo iyinxalenye ebalulekileyo kwiibhafu zesilivere ze-electroplating. Ngokufana ne-copper plating, ii-ion ze-cyanide zenza ii-complexes ezizinzileyo zesilivere-cyanide. Ezi zintsonkothileyo zinceda ekufezekiseni i-coating yesilivere eqaqambileyo, egudileyo, kwaye enamathelayo. Ukufakwa kwesilivere kunye neebhafu ezisekelwe kwi-cyanide ngokuqhelekileyo zisetyenziselwa ukuveliswa kweetafile, izinto zokuhombisa, kunye noqhagamshelwano lombane, apho ukuhanjiswa okuphezulu kunye nokumelana nokubola kwesilivere kufunwa.

Ukucwenga kwegolide

I-electroplating yegolide ihlala isebenzisa i-sodium cyanide ukwenza izinto zegolide-cyanide. Ukusetyenziswa kwe-sodium cyanide kwiibhafu zokufaka igolide kuvumela ukubekwa komgangatho obhityileyo, ofanayo wegolide kunye nokuncamathela okugqwesileyo. Ukucwenga kwegolide kusetyenziswa ngokubanzi kushishino lwe-elektroniki kumacandelo afana nezihlanganisi kunye nabafowunelwa ukuphucula ukuhanjiswa kombane kunye nokuthintela ukubola. Ikwasetyenziswa nakwishishini lobucwebe ngeenjongo zokuhombisa. Ukukwazi ukulawula inkqubo yokubeka ngokuchanekileyo usebenzisa iibhafu ezisekwe kwi-sodium cyanide kuqinisekisa ukuba i-coat yegolide ineempawu ezinqwenelekayo, ezinjengombala, ukuqina, kunye nokuqina.

Iingqwalaselo zoKhuseleko

Kubalulekile ukuqaphela ukuba i-sodium cyanide inetyhefu kakhulu. Ukuphefumla, ukungeniswa, okanye ukudibana kwesikhumba nesodium cyanide okanye izisombululo zayo zinokubulala. Isenokusabelana neeasidi ukuvelisa igesi eyityhefu yehydrogen cyanide. Ke ngoko, iiprothokholi ezingqongqo zokhuseleko kufuneka zilandelwe xa kusingathwa i-sodium cyanide kwimisebenzi ye-electroplating. Abasebenzi bafanele banikwe uqeqesho olufanelekileyo ngendlela ekhuselekileyo yokuphatha le khemikhali, kuquka nokusetyenziswa kwezixhobo ezifanelekileyo zokuzikhusela ezifana neeglavu, izibuko, nokhuseleko lokuphefumla. Izixhobo zombane zombane kufuneka zibe neendawo zokusebenza ezinomoya owaneleyo kunye nezicwangciso zokusabela kwimeko yongxamiseko kwimeko yokuchitheka okanye ukuvezwa ngengozi. Ukongezelela, ukulahlwa kwenkunkuma ene-sodium cyanide kufuneka kuqhutywe ngokuhambelana nemigaqo engqongqo yokusingqongileyo ukuthintela ukungcoliseka kwemithombo yamanzi kunye nokulimaza ubomi basemanzini.

isiphelo

I-sodium cyanide idlala indima eninzi kunye nebalulekileyo kwiinkqubo ze-electroplating zetsimbi. Ukukwazi kwayo ukwenza i-metal-cyanide complexes, ukunciphisa i-anode polarization, ukuzinzisa isisombululo se-electroplating, kunye nokuphucula i-cathode polarization yenza ukuba ibe yinto ebalulekileyo ekufezekiseni umgangatho ophezulu weentsimbi. Nangona kunjalo, ngenxa yetyhefu egqithisileyo, ukuphathwa ngokukhuselekileyo kunye nokusetyenziswa kwe-sodium cyanide kwi-electroplating kubaluleke kakhulu. Njengoko iteknoloji iqhubela phambili, iinzame ziyenziwa ukuphuhlisa enye, iinkqubo ezingenatyhefu ye-electroplating, kodwa okwangoku, i-sodium cyanide ihlala isisithako esiphambili kwizicelo ezininzi ze-electroplating.