Dab tsi yuav tsum tau them sai sai rau thaum lub sijhawm ua haujlwm tshuaj nickel plating ntawm hluav taws xob cua sov raj?

Dab tsi yuav tsum tau them sai sai rau thaum lub sijhawm ua haujlwm tshuaj nickel plating ntawm hluav taws xob cua sov raj?

Chemical nickel plating yog cov txheej txheem ua haujlwm uas tso cai rau nickel plating ntawm cov hlau tsis muaj hluav taws xob. Txhawm rau kom ntseeg tau qhov zoo ntawm cov hlau tsis muaj electrolytic nickel plating, qee cov ntsiab lus tseem ceeb yuav tsum tau muab sau tseg thaum lub sijhawm ua haujlwm. Niaj hnub no, tus editor yuav qhia txog cov kev ceev faj yuav tsum tau ua nyob rau hauv chemical nickel plating lag luam.

1. Thaum lub sijhawm ua haujlwm ntawm cov txheej txheem electroless npib tsib xee plating, yuav tsum tau saib xyuas kom nruj, thiab qhov cua nyob rau hauv qhov chaw uas tsis yog electrolytic nickel plating yuav tsum tau txhim kho. Cov neeg ua haujlwm yuav tsum tau txais kev cob qhia kev cob qhia, hnav lub npog ntsej muag kev tshaj lij, tsom iav tiv thaiv thiab hnav khaub ncaws tiv thaiv, thiab siv cov txheej txheem ua haujlwm nruj me ntsis.

2. Nickel yog ib qho tshuaj lom neeg hnyav hlau uas tuaj yeem ua rau tib neeg lub cev raug mob yog tias nqus tau los yog sib cuag nrog nws. Yog li ntawd, thaum thauj cov ntaub ntawv raw, nws yog ib qho tsim nyog yuav tsum thauj khoom thiab tshem tawm maj mam kom tsis txhob muaj kev puas tsuaj rau cov ntim khoom thiab cov thawv ntim khoom, thiab nruab nrog cov khoom xau thaum muaj xwm ceev. Kev ntsuas kub yuav tsum tau ua thaum lub sijhawm ua haujlwm ntawm electrolytic nickel plating.

3. Tom qab kev ua haujlwm tsis yog electrolytic npib tsib xee plating tiav lawm, cov khoom siv raw yuav tsum muab cia rau hauv qhov chaw txias thiab cua txias. Txhawm rau kom tsis txhob muaj qhov tshwm sim ntawm qhov hluav taws kub, nws yog ib qho tsim nyog yuav tsum tshem tawm qhov hluav taws kub thiab qhov hluav taws kub.

Koj puas nkag siab lub hauv paus ntsiab lus ntawm chemical nickel plating?

Nyob rau hauv lub catalytic kev txiav txim ntawm catalyst Fe, lub hypophosphite nyob rau hauv cov tshuaj catalyzes dehydrogenation ntawm lub catalytic nto, ua active hydrides uas yog oxidized rau phosphite; Lub active hydride ionizes nrog npib tsib xee nyob rau hauv cov kev daws teeb meem thiab undergoes ib tug txo cov tshuaj tiv thaiv mus sau npib tsib xee, uas oxidizes nws tus kheej mus rau hauv radon gas. Namely: 2H2PO2- plus 2H2O plus Ni2 plus → Ni0 plus H2 ↑ plus 4H plus plus 2HPO32-.

Tsis tas li ntawd, ib feem ntawm cov hypophosphite ions nyob rau hauv cov kev daws yog hloov mus rau hauv elemental phosphorus los ntawm hydrides thiab nkag mus rau lub txheej. Namely: H2PO2- ntxiv [H ntxiv] (catalytic nto) → P ntxiv H2O ntxiv rau OH -, cov txheej txheem tshuaj lom neeg yog NiP alloy nrog cov qauv amorphous.

Thov muab cov lus piav qhia ntxaws raws li hauv qab no:

Tus txheej txheem ntawm depositing ib txheej ntawm npib tsib xee rau saum npoo ntawm cov hlau qhov chaw los ntawm oxidation-txo tsis tas yuav tsum tau rau sab nraud tam sim no. Siv los txhim kho corrosion kuj thiab hnav tsis kam, txhim khu gloss thiab zoo nkauj. Haum rau ci npib tsib xee plating ntawm qhov me me nrog cov duab los yog cov duab, tsis tas yuav polishing ntxiv. Feem ntau, cov khoom plated tau nkag mus rau hauv cov tshuaj sib xyaw ua ke ntawm cov nickel sulfate, sodium dihydrogen hypophosphate, sodium acetate, thiab boric acid, thiab hloov pauv ntawm qee qhov acidity thiab kub. Cov npib tsib xee hauv cov tshuaj yog ionized thiab txo mus rau cov molecules los ntawm sodium dihydrogen hypophosphate, uas accumulates nyob rau saum npoo ntawm qhov chaw, ua rau ib tug nplua thiab ci npib tsib xee txheej. Cov khoom hlau tuaj yeem ua tau nickel plated tam sim ntawd. Tin, tooj liab, thiab tooj liab alloy qhov chaw yuav tsum xub kov nrog cov ntawv txhuas ntawm lawv qhov chaw rau 1-3 feeb kom nrawm cov tshuaj nickel plating. Tshuaj plating yog txoj kev siv oxidation-txo cov tshuaj tiv thaiv rau cov hlau alloys ntawm plated qhov chaw nrog catalytic nto yam tsis muaj energized.