1. Vaum: txiav txim siab "Foundation" ntawm xeb teeb kev tsim
Nruab nrab av noo (40% -70%): Qhov zoo tagnrho rau xeb txheej stabilization. Ib qho nyias nyias, sib txawv dej zaj duab xis txhawb nqa qeeb corrosion, pub, p) hauv huab cua hlau kom maj mam muab tso rau hauv txheej xeb. Cov ntsiab lus no ua cov tebchaw insoluble (piv txwv li, cu₂o, cr ({feede, re₃o₄) rau hauv ntom- feooh.
Excessively high humidity (>80%, piv txwv li, muaj xyoob ntoo los nag): Ib qho tuab, pheej ywg dej zaj duab xis ua rau muaj kev xeb hnyav corrosion. Txheej xeb loj hlob dhau nrawm mus rau trap alloying ntsiab, tshuav xoob thiab porousgen nkag mus, ua rau mus txuas ntxiv matrix corrosion.
Ntau dhau ntawm cov av noo (<30%, e.g., arid deserts): Tsis muaj cov ntaub ntawv sau dej ua ntej, yog li corrosion yog yuav luag tsis zoo. Cov txheej xeb tsis ua haujlwm los yog nyob nyias nyias thiab tsis tau ua tiav, tsis muaj peev xwm tiv thaiv.
2. Kev ntxhov siab ions (cl ill, so₂): yuam sij "disruptors" lossis tus cwj pwm "tswj"
(1) Chloride ions (CLR): Qhov Kev Ua Haujlwm Tshaj Plaws
High Claus ib puag ncig (ntug dej hiav txwv, daus - yaj ntsev thaj tsam): Cl⁻ Excumulates ntawm cov xeb txheej - matrix interface, nrawm anodic dissolution ntawm cov hlau matrix. Nws kuj tseem txwv tsis pub muaj kev hloov pauv ntawm - feooh rau {} feooh, khaws cov xeb xoob. Thaum muaj mob hnyav heev, nws ua rau "pitting corrosion" - paltemized rustement txheej ua rau kev puas tsuaj ntawm kev puas tsuaj.
Thaj chaw qis qis (thaj chaw nyob deb nroog): Qhov kev cuam tshuam cl⁻ minimal tso cai rau cov khoom siv ua haujlwm ib txwm muaj, txhawb kev tsim cov tuab, tiv thaiv {feooh txheej.
(2) Sulphur dioxide (so₂): Dual teebmeem nyob ntawm kev saib xyuas
Tsis tshua muaj siab (<0.1 ppm): Me corrosion txhawb nqa cov khaub ncaws tsis sib haum xeb kev loj hlob. Sulfate ions (so₄²⁻) tsim los ntawm so₂xidation tuaj yeem ua rau fe³⁺ los ua kev faib tawm ib puag ncig ntawm alloy- feooh tsim.
High SO₂ concentration (>1 ppm): So kom nrawm nrawm nrawm, ua kom tuab, xoob xeb nplua nuj hauv Fesoes · 7} {1} soluble). Cov txheej no yog ntxig thiab ntxuav tau yooj yim los ntawm nag, tiv thaiv tus txheej txheem stabilization nkaus.
3. Lub Teeb & Qhov Cua: Ua kom nrawm "loj hlob" ntawm cov pua muaj xeb
Txaus lub teeb & thiab cua zoo (piv txwv li, qhib - pa txuas hniav, sab qab teb {3} {} Nrhiav chaw):
Lub teeb nce ntau qhov kub thiab kub, ua kom nrawm ntawm dej zaj duab xis {{0} {} Lub voj voog qhuav "uas concentrates alloy cov ntsiab lus hauv txheej xeb.
Zoo cua ua pa rov ua pa oxygen (O₂) rau redox redation (piv txwv li, so noo, zam kev tsis tu ncua {} corrosion.
Qhov tshwm sim: Kev tsim kho nrawm nrawm ntawm cov khaub ncaws hnav, ntom ntom, ntom- feooh txheej.
Tsis muaj lub teeb & tsis muaj qhov cua txias (piv txwv li, ntxoov ntxoo underpasses, nyob nrog qhov chaw):
Cov huab cua tsis zoo thiab qis qeeb cov dej qeeb qeeb ntawm qhov chaw nyob tsis tu ncua.
Oxygen Dougetion inhibits qhov kev hloov pauv ntawm tsis khov rust thases rau {feooh, ua rau muaj xoob, tsaus muaj kev tiv thaiv.
4. Kub: Hloov kho qhov "ceev" ntawm cov txheej txheem stabilization
Qhov kub thiab txias (15-30 degree): Cov Kev Ua Haujlwm Zoo Tshaj Plaws. Electrochemical corrosion (xeb tsim) thiab qhov sib txawv ntawm cov khoom sib cais ua kom muaj xeb xoob xoob xoob, {feooh.
Tsawg heev kub (<0°C): Cov dej khov, cheemping Electrochemical cov tshuaj tiv thaiv. Rust txheej tsim kev tsim cov khoom ruaj khov, thiab cov xeb uas twb muaj lawm yuav tawg vim tsis khov -}}}} {kev tiv thaiv.
Extremely high temperature (>40 degree): Ua kom nrawm dej evaporation, ua rau ib qho chaw qhuav heev. Corrosion slows, thiab txheej xeb txheej ua nyias thiab nkig. Tej zaum kub siab kuj tseem yuav ua rau hluav taws xob nthuav dav ntawm cov xeb txheej, tsim kom muaj microcracks uas tso cai rau corrosive media kom nkag mus.
