Corrosion Resistant Niobium hais

1, Kev npaj ntawm high - purity niobium raw khoom

• Hluav Taws Xob Beamting (EBM)

Nyob rau hauv ib puag ncig lub tshuab nqus tsev, siab {{0} Tshem tawm cov kab mob hluav taws xob ntau dua li 99.95%, muab cov pa roj carbon monoxide ntau dua li no.

• Nqus Arc Melting (var)

Raws li cov txheej txheem ntxiv ntxiv, tsis - qhov hluav taws xob tuaj yeem tshem tawm, thiab cov khoom siv tantoy thiab tantalum) kom paub tseeb tias muaj kev sib xyaw ua ke.
2, hmoov acting txheej txheem

• Hydrodehydrogenation txheej txheem (HDH txujci)

Hydrogenation: insulate iobium agots nyob rau hauv ib qho chaw hydrogen agos nroj ntawm 500-800℃c rau induce hydrogen maj.
Pob zeb tsoo: Cob nkig Niobium Niobium ingot yog mechanically crushed mus rau hauv irregularly zoo li cov duab.
Dehydogenation: Kev kho kom zoo yog nqa tawm hauv lub tshuab nqus tsev siab ntawm 800-1000 Degree C kom tau txais Niobium hais nrog cov ntsiab lus oxygen.
Cov yam ntxwv: Cov qauv no muaj tus nqi qis, thiab tau txais cov hmoov tsis xwm yeem, tab sis cov ntsiab lus oxygen tshwj xeeb (feem ntau tswj tau qis dua 800ppm).

• Plasma Rotating Txuj Ci Electrode txoj kev (prep)

Siv high - purity niobium alloy alloy alloy alloy alloy alloy alloy alloy alloy alloy alloy alloy alloy alloy alloy
Lub electrode tig ntawm kev kub ceev, thiab nyob rau hauv kev txiav txim ntawm centrifugal quab yuam, thiab txias los ua cov spherherity niobium hais.
Cov yam ntxwv: Cov hmoov tau muaj cov khoom zoo, zoo nkauj heev, siab heev, cov txiaj ntsig roj tsawg, tab sis tus nqi siab.

• Mechanical Ntsuam Xyuas thiab Kev Kawm

Tsis hais txog txoj kev siv, cov hmoov npaj yuav tsum yauv kev ntsuas nruj thiab kho dav hlau kom meej: 45-150 μ m) thiab ua kom tau raws li cov xwm txheej sib txawv.
3, Kev Kho Kom Zoo Sab DOS thiab Passivation (Cov kauj ruam tseem ceeb)

• Acid Ntxuav Thiab Tshuaj Ntxuav

Ntxuav cov ntu ntawm cov lus siv cov tshuaj sib xyaw (xws li HF + HSO α) kom tshem tawm cov paug tsis taus npoo npoo thiab cov txheej txheem oxide thaum lub sij hawm crushing thiab ua.

• Kev Hluav Taws Xob

Electropolishing hais nyob rau hauv ib qho kev siv electrolyte txo qis saum npoo roughness thiab tau txais ib tug du nto (ra<0.5 μ m), which helps to form a more uniform and dense passivation film.

• Kev Kho Mob Passivation

Los ntawm kev siv tshuaj lom neeg lossis cov txheej txheem hluav taws xob (xws li nitric acid passivation), ruaj khov, thiab cov nplaum ruaj khov (nb ₂) Qhov no yog cov kauj ruam tseem ceeb tshaj plaws hauv kev ua tiav thiab txhim kho nws cov corrosion tsis kam.
4, Kev sim tshuaj thiab tswj kev tswj hwm zoo

• Kev ua yeeb yam ntawm lub cev

Particle loj faib: siv lub laser colidle loj analyzer.
Morphology thiab Sphererity: pom los ntawm kev ntsuas hluav taws xob electron metcopy (sem).
Kev Ua Si: Ntsuas los ntawm Hall kev ntsuas kev tam sim no.

• Tshuaj Muaj Tshuaj

Purity thiab impurity ntsiab: inductively txuas hniav ntshav huab hwm coj spectrometry (icp {{ms) tau siv.
Cov pa thiab cov ntsiab lus nitrogen: Siv cov kws tshuaj oxygen thiab nitrogen rau nruj tswj cov ntsuas (xws li o<800ppm, N<100ppm).

• Corrosion Kuj Xeem

Kev ntsuas acidic ib puag ncig kev ntsuas: txiav txim siab txhua xyoo kev daws teeb meem txhua xyoo xws li 70% nitric acid thiab concentrated hydrochloric acid.
Electrochemical Testing: Ntau Ntsuas Solosion Resistance los ntawm ntsuas tus kheej corrosion tam sim no ceev thiab muaj peev xwm ua txhaum los ntawm lub zog potentiodynamic polarization nkhaus.