Titanium Anodes rau Electroplating - Cov Kev daws teeb meem Anode uas tsis yaj tau rau cov txheej txheem ua tiav nto

Cov TTitanium anodes yog cov khoom siv electrode uas tsis yaj hauv dej uas siv rau hauv cov tshuaj electroplating. Lawv ruaj khov thiab tiv taus corrosion. Tsis zoo li cov anodes siv tau xws li tooj liab, nickel, lossis tin, titanium anodes tsis yaj thaum lub sijhawm electrolysis. Lawv tuaj yeem coj tam sim no mus rau hauv cov tshuaj electroplating thiab tswj lawv cov geometry thiab kev ncaj ncees ntawm qhov chaw thoob plaws lawv lub neej ua haujlwm. Nrog rau kev faib tam sim no meej thiab ruaj khov thiab lub neej ua haujlwm ntev, lawv zoo tagnrho rau cov txheej txheem electroplating.

Lub titanium anode substrate yog ua los ntawm cov titanium ntshiab hauv kev lag luam thiab coated nrog cov hlau muaj nqis electrochemically active oxide txheej. Nyob rau hauv cov chaw electroplating tshwj xeeb, cov tshuaj pleev xim txiav txim siab qhov ua haujlwm tau ntau yam, cov yam ntxwv ntawm chlorine precipitation, thiab lub neej ua haujlwm ntawm titanium anode.

Dab tsi yog titanium anode?

Ib lub titanium anode substrate muaj Qib 1 titanium (feem ntau yog nyob rau hauv mesh, phaj, tubular, lossis pas nrig daim ntawv) thiab ib qho catalytic hlau oxide txheej saum npoo. Cov txheej oxide no ua haujlwm ua txheej electrochemically nquag, los ntawm qhov tam sim no raug xa mus rau electrolyte. Yog tsis muaj txheej, ib zaj duab xis oxide passivating siab-resistivity yuav tsim rau ntawm qhov chaw titanium liab qab, cuam tshuam cov tam sim no ruaj khov ntawm cov qauv plating voltages.

Ob lub txheej txheem siv rau titanium anodes siv hauv electroplating:

Txheej Txheej Hlau Sib Xyaws (MMO): Ib qho sib xyaw ntawm ruthenium dioxide (RuO₂), iridium dioxide (IrO₂), thiab titanium dioxide (TiO₂) raug sintered rau ntawm titanium substrate. Cov titanium anodes uas muaj MMO-coated yog siv rau hauv cov tshuaj plating uas muaj chloride thiab sulfate. Cov khoom sib xyaw oxide raug kho nyob ntawm seb qhov anode reaction yog oxygen evolution reaction, chloride evolution reaction, lossis ob qho tib si.

Platinum-Coated Titanium Anode: Ib txheej platinum nyias (1–5 µm) yog electrodeposited lossis thermally bonded rau ntawm ib lub titanium substrate. Platinum-coated titanium anodes yog siv rau hauv kub, nyiaj, thiab cov hlau muaj nqis plating daws teeb meem, thaum MMO coatings yog siv rau hauv cov txheej txheem tsis sib xws nrog cov tshuaj tiv thaiv.

Ob hom titanium anodes raug cais ua cov anodes ruaj khov (DSA), sib txawv ntawm cov hlau anodes siv tau hauv cov ntawv thov electroplating.

Titanium Anode Hom thiab Cov Lus Qhia Tshwj Xeeb

1: MMO Txheej Titanium Anode

Txoj kev npaj ntawm MMO coated anodes yog raws li nram no: cov tshuaj noble hlau chloride yog coated rau ntawm titanium hlau nto, thiab los ntawm thermal decomposition, ib tug sib xyaw oxide txheej yog tsim. Lub voj voog txheej no yog rov ua ntau zaus kom ua tiav cov oxide txheej thickness thiab loading xav tau.

parameter	specification
Cov khoom siv substrate	Qib 1 / Ti Qib 2 (ASTM B265)
Cov ntaub ntawv Anode	Mesh, phaj, raj, pas nrig
Txheej txheej	RuO₂-IrO₂-TiO₂ (qhov piv tau hloov kho rau ib daim ntawv thov)
Txheej thickness	8 – 20 µm (txheej oxide nquag)
Noble hlau loading	8 – 12 g/m² Ru+Ir (tus qauv); txog li 20 g/m² (lub neej ntev)
Kev ua haujlwm tam sim no ceev	100 – 2000 A/m² (nyob ntawm seb ua haujlwm li cas)
Kev khiav hauj lwm kub	Txog li 70 ° C (dej)
Oxygen evolution peev xwm	~1.45 – 1.6 V piv rau SHE (dej da dej sulfate)
Kev hloov pauv ntawm chlorine	~1.0 – 1.2 V piv rau SHE (chloride da dej)
Kev pab cuam lub neej	2 - 10 xyoo (ntawm 500 A / m² txuas ntxiv)
Cov hom da dej sib xws	Tooj liab sulfate, nickel sulfamate, zinc chloride, chrome tawv, chrome kho kom zoo nkauj

 

2Platinum-Coated Titanium Anode

 

Cov anodes uas muaj platinum txheej yog tsim los ntawm kev electrodeposition ntawm platinum rau ntawm titanium substrate lossis los ntawm kev sib txuas thermal ntawm platinum daim ntawv rau titanium base khoom. Cov txheej platinum muab cov catalytic ua haujlwm siab thiab cov tshuaj inertness thoob plaws ntau yam tshuaj lom neeg da dej.

 

parameter	specification
Cov khoom siv substrate	Ti Qib 1 (ASTM B265)
Cov ntaub ntawv Anode	Phaj, mesh, pas nrig, hlau, pob tawb
Platinum txheej thickness	1 – 5 µm (electrodeposited); 25 – 125 µm (clad)
Kev ntshiab ntawm platinum	≥ 99.9% Pt
Kev ua haujlwm tam sim no ceev	50 – 1000 A/m²
Kev khiav hauj lwm kub	Txog li 80 ° C
Cov hom da dej sib xws	Kub, nyiaj, platinum pawg hlau, alkaline tooj liab, fluoride-muaj da dej
Kev pab cuam lub neej	3 - 15 xyoos (lub neej plating nyob ntawm qhov tam sim no loading)

 

3: Pob Tawb Titanium Anode

 

Cov pob tawb titanium anode yog cov thawv mesh lossis perforated titanium siv los tuav cov hlau pellets soluble (tooj liab, nickel, tin) hauv cov electroplating ib txwm muaj qhov twg xav tau anode yaj. Lub pob tawb nws tus kheej tsis yaj; nws tuav cov khoom siv anode consumable thaum tswj kev sib cuag hluav taws xob nrog lub tsheb npav bar system.

 

parameter	specification
Cov khoom siv substrate	Ti Qib 1 / Ti Qib 2
Mesh qhib	3 – 12 hli (tus qauv); kev cai qhov qhib muaj
Deg finish	Acid-pickled los yog electropolished
Kev sib xws ntawm lub hnab anode	Polypropylene, Dynel, PVDF hnab liners
Cov hom pellet tuav	Tooj liab, npib tsib xee, tin, cobalt, zinc
Kev khiav hauj lwm kub	Txog li 70 ° C

 

Titanium Anodes Ua Haujlwm Li Cas Hauv Electroplating

 

Hauv ib lub voj voog electroplating, lub anode txuas nrog lub davhlau ya nyob twg zoo ntawm lub rectifier. Thaum tam sim no ntws, cov tshuaj tiv thaiv oxidation tshwm sim ntawm qhov chaw anode thaum cov hlau tso rau ntawm cathode (qhov chaw raug plated).

Rau cov titanium anodes uas tsis yaj, qhov tshuaj tiv thaiv anodic thawj zaug yog electrolytic oxidation ntawm dej lossis chloride ions:

Hauv cov da dej uas muaj sulfate: 2H₂O → O₂ + 4H⁺ + 4e⁻ (kev hloov pauv ntawm cov pa oxygen)

Hauv cov chav da dej uas muaj chloride: 2Cl⁻ → Cl₂ + 2e⁻ (kev hloov pauv ntawm cov tshuaj chlorine)

Vim tias lub anode tsis yaj, qhov concentration ntawm cov hlau ion hauv lub dab da dej yuav tsum tau tswj los ntawm kev ntxiv cov ntsev ntxiv lossis los ntawm kev siv lub tshuab yaj sib cais. Qhov no yog qhov sib txawv ntawm cov txheej txheem piv rau cov anodes uas siv tau, thiab nws yuav tsum tau saib xyuas thiab kho cov tshuaj lom neeg hauv lub dab da dej kom tswj tau cov xwm txheej plating ruaj khov.

Qhov geometry ruaj khov ntawm titanium anodes tso cai rau kev xam thiab kev tswj hwm qhov deb ntawm anode-rau-cathode thoob plaws hauv kev tsim khoom, uas tswj hwm qhov sib npaug ntawm tam sim no thiab plating thickness hla cov qauv geometries nyuaj.

Qhov zoo ntawm Titanium Anodes hauv Electroplating

Dimensional stability — Cov titanium anodes khaws lawv cov geometry thoob plaws lub neej ua haujlwm. Cov anodes siv tau hloov pauv cov duab thaum lawv yaj, hloov pauv qhov kev faib tawm tam sim no thiab xav tau kev hloov pauv tsis tu ncua. Ib qho anode uas tsis yaj yuav tshem tawm qhov sib txawv no ntawm cov txheej txheem electroplating.

Kev sib xyaw ua ke ntawm cov tshuaj lom neeg hauv chav dej — Vim tias titanium anodes tsis qhia cov khoom anode yaj rau hauv lub dab dej plating, cov hlau tsis huv los ntawm anode paug raug tshem tawm. Qhov no tseem ceeb heev hauv kub, nyiaj, thiab nickel plating, qhov twg anode passivation lossis impurity co-deposition ua rau qhov zoo ntawm cov khoom tso tawm poob qis.

Kev pab lub neej ntev — MMO titanium anodes ua haujlwm tau 2–10 xyoo nyob rau hauv cov qauv plating. Platinum-coated variants muab 3–15 xyoo ntawm kev pabcuam nyob ntawm qhov tam sim no loading. Qhov no txo ​​​​​​qhov zaus hloov anode thiab cuam tshuam downtime piv rau consumable anodes.

Txo kev txij nkawm — Cov titanium anodes tsis tas yuav tsum tau muab tshem tawm tas li, ntxuav cov anode slime, lossis hloov lub hnab kom tshem tawm cov khoom seem uas yaj. Kev saib xyuas tsuas yog txwv rau kev tshuaj xyuas tas li thiab thaum kawg rov ua dua thaum kawg ntawm lub neej oxide.

Tam sim no efficiency — Qhov qis overpotential ntawm MMO thiab platinum coatings txhais tau tias tsawg dua lub zog siv ntawm anode rau ib qho plating tam sim no. Hauv kev ua haujlwm electroplating loj, qhov no pab txhawb rau kev txo qis ntawm kev siv hluav taws xob ib chav ntawm thaj chaw plated.

Kev sib raug zoo nrog qhov ceev ceev tam sim no — Cov titanium anodes txhawb nqa qhov ceev tam sim no txog li 2000 A / m² yam tsis muaj kev hloov pauv lossis qhov kub hnyiab hauv zos, ua rau muaj cov txheej txheem electroplating ceev ceev uas cov anodes siv tau yuav tsis yooj yim.

Tshuaj ua hauj — Cov titanium substrate tiv taus cov kua qaub oxidizing (sulfuric, nitric, chromic), cov kua alkaline, thiab cov plating baths uas muaj halide ntawm qhov kub ua haujlwm txog li 70–90 ° C. MMO thiab platinum coatings txuas ntxiv qhov ntau ntawm kev ua haujlwm electrochemically mus rau qhov muaj peev xwm tshaj qhov titanium liab qab tuaj yeem txhawb nqa.

Cov Ntawv Thov Titanium Anode los ntawm Electroplating Txheej Txheem

1Tug: Tooj Liab Electroplating

Hauv kev siv cov kua qaub tooj liab electroplating rau PCB tsim thiab cov ntawv thov kho kom zoo nkauj, titanium anodes yog siv rau hauv cov txheej txheem uas cov anodes tooj liab soluble muaj kev sib tw tuav lossis kev yaj sib xws. MMO titanium anodes raug muab tso rau hauv lub tank plating nrog rau cov kab ke rov ua kom tiav tooj liab, muab cov titanium anode tam sim no faib ruaj khov thaum cov tooj liab ion concentration raug tswj hwm los ntawm kev tswj hwm ntxiv ntawm cov kua tooj liab sulfate.

Hauv kev siv tooj liab electroplating siab rau kev txhaws qhov, cov titanium anodes uas tsis yaj tau nrog cov qauv geometries tau muab tso rau kom ua tiav kev faib tawm tam sim no thoob plaws qhov ntsug thiab kab rov tav tib lub sijhawm.

2Tom ntej: Nickel Electroplating

Cov chaw da dej nickel electroplating siv MMO titanium anodes zam kev anode passivation thiab cov teeb meem anode hnab uas cuam tshuam nrog cov nickel anodes uas yaj tau. Kev ntxiv nickel ion yog ua tiav los ntawm kev ntxiv nickel sulfate lossis nickel sulfamate concentrates. Titanium anodes hauv nickel sulfamate da dej ua haujlwm ntawm qhov ceev tam sim no ntawm 100–500 A / m² thiab tswj kev hloov pauv oxygen ruaj khov yam tsis tsim nickel oxide sludge.

Hauv nickel electroforming, qhov twg qhov tseeb ntawm qhov tso nyiaj yog qhov tseem ceeb, titanium anodes yog qhov zoo dua vim tias lawv cov geometry ruaj khov tso cai rau qhov sib nrug cathode-rau-anode kom raug thoob plaws ntau teev lossis ntau hnub deposition cycles.

3: Chrome nyuaj thiab kho kom zoo nkauj Chrome Electroplating

Cov chaw da dej chrome electroplating uas siv chromic acid (CrO₃) yog cov oxidizing thiab corrosive heev rau feem ntau cov ntaub ntawv anode. Cov anodes ua los ntawm txhuas-tin tau siv yav dhau los hauv chrome electroplating, tab sis cov anodes ua los ntawm txhuas tsim cov sludge chromate thiab raug kev txwv ntau ntxiv. Titanium anodes nrog iridium-tantalum oxide coatings (IrO₂-Ta₂O₅) yog siv hauv chrome electroplating ua cov hlau lead anode hloov.

Hauv kev siv chrome electroplating, cov titanium anodes uas tsis yaj tau muab kev ua haujlwm ruaj khov ntawm qhov ceev tam sim no (1000–3000 A/m²) siv los ua kom cov chrome tuab ntawm cov pas nrig hydraulic, cov menyuam, thiab cov nplaim hnav. Kev ua raws li cov qauv titanium anode - zoo li tus cathode geometry - txhim kho qhov tuab sib xws ntawm cov khoom cylindrical thiab cov khoom profile.

Hauv kev siv chrome electroplating kho kom zoo nkauj, titanium anodes txo qhov kev saib xyuas da dej los ntawm kev tshem tawm cov hlau lead carbonate thiab cov hlau lead chromate, uas ua rau kev daws teeb meem meej thiab qhov ci ntsa iab.

4Kub thiab Nyiaj Electroplating

Kev siv cov hlau muaj nqis electroplating xav tau cov titanium anodes vim tias cov kub thiab nyiaj anodes yaj tsis sib xws thiab ua rau cov hlau tsis huv nkag mus rau hauv lub dab dej. Platinum-coated titanium anodes yog cov kev xaiv txheem rau kev siv kub electroplating hauv cov khoom siv hluav taws xob, cov hniav nyiaj hniav kub, thiab kev tsim cov khoom sib txuas.

Hauv kev siv hluav taws xob kub, cov anode uas tau coated tswj tau qhov muaj peev xwm anodic ruaj khov thoob plaws ntau yam tshuaj lom neeg kub sulfite, kub cyanide, thiab kub thiosulfate da dej. Qhov kev tsim tsis yaj no tshem tawm cov av nplaum kub anode thiab anode passivation uas txo qhov ua haujlwm tam sim no hauv cov da dej kub.

Rau kev siv hluav taws xob los plating nyiaj, titanium anodes tiv thaiv cov nyiaj carbonate thiab nyiaj oxide sib sau ua ke ntawm cov nyiaj anodes uas siv tau uas ua rau muaj cov kab tsaus nti thiab cov tuab tsis sib xws. Kev sib sau ua ke ntawm cov nyiaj ion yog tswj los ntawm kev ntxiv cov nyiaj nitrate lossis cov nyiaj methanesulfonate replenishment solution.

5Tug: Kev Siv Zinc Electroplating

Hauv kev siv zinc electroplating nrog alkaline non-cyanide lossis acid chloride da dej chemistry, titanium anodes siv rau hauv cov kab plating ntau qhov chaw uas hloov anode ntau zaus ua rau muaj kev cuam tshuam ntau lawm. MMO titanium anodes hauv zinc electroplating baths ua haujlwm nyob rau hauv cov xwm txheej uas oxygen hloov pauv thaum zinc ion replenishment yog muab los ntawm concentrated zinc oxide lossis zinc chloride ntxiv.

Cov pob tawb anode tuav cov zinc pellets lossis pob kuj tseem siv rau hauv zinc electroplating qhov twg qhov chaw zinc siv tau zoo dua tab sis qhov ruaj khov ntawm qhov sib dhos anode tseem xav tau.

6Tom ntej: PCB thiab Electronics Electroplating

Kev tsim PCB siv cov titanium anodes hauv ob qho tib si vaj huam sib luag plating thiab cov qauv plating txheej txheem. Hauv cov kab ntsug txuas ntxiv plating (VCP), cov titanium anodes uas tsis yaj tau raug ntsia rau ntawm ob sab ntawm vaj huam sib luag PCB. Qhov geometry ruaj khov ntawm titanium anodes yog qhov tseem ceeb hauv cov khoom siv VCP vim tias qhov deb ntawm vaj huam sib luag-rau-anode yuav tsum nyob ruaj khov thaum cov vaj huam sib luag txav mus los ntawm lub cell plating.

Hauv kev siv hluav taws xob kub ntawm cov txuas ntug thiab cov ntaub qhwv, cov titanium anodes uas muaj platinum coated raug muab tso rau hauv cov jigs masking precision. Kev faib tawm tam sim no tswj tau ua kom cov tuab ntawm cov kub sib npaug hauv ± 0.1 µm hla thaj chaw plating.

Hauv tin thiab tin-silver plating rau kev ua tiav cov khoom siv lead, MMO titanium anodes hauv methane sulfonate (MSA) da dej chemistry ua haujlwm ntawm qhov ceev tam sim no ntawm 200–800 A / m² yam tsis muaj anode yaj thiab sludge tsim cuam tshuam nrog cov anodes ntshiab tin consumable.

Kev Xaiv thiab Kev Txij Nkawm Titanium Anode

1Xaiv Cov Txheej Txheem Titanium Anode Zoo

Qhov kev xaiv ntawm titanium anode txheej nyob ntawm seb cov tshuaj lom neeg hauv chav dej, qhov ceev ntawm kev ua haujlwm tam sim no, qhov kub thiab txias, thiab seb qhov tshuaj tiv thaiv anodic thawj zaug yog oxygen lossis chlorine evolution:

 

Hom Da Dej	Kev Txheej Txheem Titanium Anode Pom Zoo
Acid tooj liab sulfate	RuO₂-IrO₂-TiO₂ (MMO, oxygen-evolving)
Nickel sulfamate / Watts	RuO₂-IrO₂-TiO₂ (MMO, oxygen-evolving)
Cov chrome tawv (CrO₃)	IrO₂-Ta₂O₅ (MMO, tiv taus oxidizing)
Kho kom zoo nkauj chrome	IrO₂-Ta₂O₅ (MMO)
Zinc chloride	RuO₂-TiO₂ (MMO, chlorine-tolerant)
Kub cyanide / sulfite	Platinum-coated titanium
Nitrate nyiaj	Platinum-coated titanium
Alkaline tooj liab cyanide	Platinum-coated titanium
Tin MSA	RuO₂-IrO₂-TiO₂ (MMO)

 

2Tom ntej: Kev Tshuaj Xyuas thiab Rov Ua Dua Titanium Anode​​​​​​​

MMO titanium anodes muaj lub neej txheej oxide kawg uas txiav txim siab los ntawm cov hluav taws xob sib sau ua ke dhau los (ntsuas hauv ampere-teev ib cheeb tsam). Thaum kawg ntawm lub neej oxide, qhov chaw ntawm titanium anode ua passive thiab voltage nce siab ntawm qhov hluav taws xob tas li. Qhov no yog qhov qhia tseem ceeb uas xav tau kev rov ua dua tshiab.

Lub sijhawm txij nkawm rau titanium anodes:

· Tshuaj xyuas cov txheej oxide txhua 6-12 lub hlis rau kev ua pob, tawg, lossis raug titanium liab qab

· Kev saib xyuas hluav taws xob: qhov hluav taws xob nce siab ntawm qhov tam sim no tas li qhia tias titanium anode oxide poob qis

· Kev ntsuas tsis tu ncua ntawm cov hlau noble loading los ntawm XRF los taug qab tus nqi siv oxide

· Kev ntxuav ntawm qhov chaw titanium anode kom tshem tawm cov nplai, cov khoom tso rau hauv carbonate, lossis cov zaj duab xis organic siv cov kua qaub hydrochloric lossis cov kua qaub oxalic

· Kev rov ua dua yog ua los ntawm kev tshem tawm cov oxide seem, rov ua dua lub substrate, thiab siv MMO lossis platinum txheej tshiab los ntawm cov txheej txheem thermal decomposition lossis electrodeposition thawj zaug.

Cov titanium anodes uas muaj platinum coated raug kuaj xyuas seb puas muaj kev sib txuas ntawm cov txheej. Cov qhov me me lossis cov chaw liab qab ua rau cov titanium substrate raug dej tshuaj lom, ua rau cov substrate oxidation thiab cov hluav taws xob faib tsis sib xws.

Cov titanium anodes yog ib qho tseem ceeb hauv kev ua haujlwm electroplating niaj hnub no uas xav tau kev ruaj khov ntawm qhov ntev, kev tswj cov tshuaj lom neeg hauv chav dej, thiab lub sijhawm ua haujlwm ntev. Kev xaiv hom titanium anode - MMO lossis platinum-coated - thiab geometry yog txiav txim siab los ntawm cov txheej txheem electroplating tshwj xeeb, cov khoom sib xyaw hauv chav dej, thiab cov kev xav tau ntawm kev tsim khoom. Kev teeb tsa kom zoo, kev tswj hwm qhov ceev tam sim no, thiab kev tshuaj xyuas tsis tu ncua ua kom ntseeg tau tias titanium anodes xa cov kev ua tau zoo txhim khu kev qha thoob plaws ntau yam kev siv electroplating.