Material science ani engineering mara la, daɲɛw sɔgɔli, oksidan ani nɔgɔ bɛ fɔ ɲɔgɔn fɛ tuma caman na. Nka, o wale ninnu, hali n’u bɛ tali kɛ ɲɔgɔn na, u jogo ni u nɔfɛkow tɛ kelen ye. U ka danfara faamuyali nafa ka bon kosɛbɛ iziniw na k’a ta jɔli la ka se aerospace ma, bawo o ko kɛlenw bɛ se ka nɔba bila fɛnw ni fɛnw ka ɲɛnamaya jan na ani u lakanani na.
Corrosion ye mun ye?
Nɔgɔ ye fɛnw tiɲɛni ye dɔɔnindɔɔnin, a ka c’a la, nɛgɛw, minnu bɛ sɔrɔ kemikɛli walima kuran-sɛnɛfɛnw fɛ. A bɛ fɛn in barika dɔgɔya ani ka nɔ bila a jɔcogo dafalen na. Nɔgɔ bɛ se ka kɛ sababu ye ka dɛsɛ ni a ma kɔlɔsi.
Material Properties (Matériel propriétés) tiɲɛni .
Ni sɔgɔli kɛra, a bɛ fɛn in farikolo cogoya Changer. O la, fanga, yecogo ani hali fɛnw bɛ se ka kɛ. Elektrokimiki walew nɛgɛ ni a lamini cɛ, o bɛ kɛ sababu ye ka o tiɲɛni in kɛ.
Corrosion suguyaw .
Corrosion tɛ kelen ye scenario bɛɛ la. Sigidaw ni fɛnw danfaralenw bɛ na ni sɔgɔli suguya wɛrɛw ye. A bɛ sɔrɔ suguya dɔw la minnu ka ca:
Attack uniforme : Nin ye sɔgɔsɔgɔninjɛ suguya ye min ka ca. A bɛ sɔrɔ ni fɛn dɔ yɔrɔ bɛɛ bɛ kɛ sigida nɔgɔlen na, o bɛ na ni tiɲɛni ye.
Galvanic Corrosion : Nin nɔgɔ suguya in bɛ kɛ ni nɛgɛ fila bɛ ɲɔgɔn na minnu tɛ kelen ye, ni elekitoroliti bɛ yen. Nɛgɛba min ka dɔgɔn, o bɛ kɛ anɔdi ye, wa a bɛ kɛ fɛn ye min bɛ wuli joona.
ecell = e⁰cathode - e⁰anode - (RT/NF) ln([ox]/[red])
Ecell=Cell potentiel, E0=Standard Electrode potentiels, R=Gas Constant, T=Furakɛcogo, N=Elektrɔni hakɛ jiginni hakɛ, ani F ye Faraday constant ye.
Crevice Corrosion : A bɛ sɔrɔ yɔrɔw la minnu datugulen don, yɔrɔ minnu na sigida lamininen ka jugu ka tɛmɛ a lamini yɔrɔ kan. O yɔrɔw, walima cɛncɛnw, bɛ se ka dilan ni u dilanni ye walima ni nɔgɔw dalajɛli ye.
∝ [Cl–]E(-∆G/RT) hakɛ ∝ [Cl–]
Nin daɲɛ in na, ΔG ye gibbs free energy yeli ye, R ye gazi basigilen ye, ani t ye funteni ye.
Pitting : Nin ye sɔgɔsɔgɔninjɛ suguya ye min bɛ na ni dingɛ misɛnninw walima dingɛw ye nɛgɛ sanfɛ. A dɔnni bɛ se ka gɛlɛya ani a bɛ se ka kɛ sababu ye ka dɛsɛ joona.
Intergranular corrosion : Nin nɔgɔ suguya in bɛ sɔrɔ nɛgɛ dɔ sumanw dancɛw kan, tuma caman na, nɔgɔw sanjibɔli walima fasaw danfaralenw sɔrɔli.
Erosion corrosion : A bɛ kɛ ni ji wulilen dɔ bɛ taa nɛgɛ sanfɛ teliya la, o bɛ kɛ sababu ye ka masinw sɛgɛn ani ka kemikaliya tiɲɛ.
Stress corrosion cracking : O bɛ kɛ ni nɛgɛ dɔ kɛra degunw ye minnu bɛ kɛ ni fanga ye ani sigida min bɛ sɔgɔsɔgɔ, o bɛ na ni kariw jɔli n’u jɛnsɛnni ye.
Selective Leaching : Nin sɔgɔli suguya in bɛ tali kɛ fɛn kelen bɔli la ni ɲɛnatɔmɔlen ye ka bɔ bɔgɔ la, ka fɛn dɔ to a kɔ min barika ka dɔgɔ, min bɛ porose.
Fɛn minnu bɛ kɛ ka fɛnw sɔgɔ .
Nɔgɔ tɛ nɔ bila nɛgɛw dɔrɔn na. Fɛn wɛrɛw fana bɛ se ka tiɲɛ:
Nɛgɛw : Nɛgɛ, aluminiyɔmu, nɛgɛ, ani u ka fɛnɲɛnamafagalanw de bɛ sɛgɛn kosɛbɛ.
Seramiki : Hali ni a man ca, seramiki bɛ se ka tiɲɛ ni kemikɛli kɛcogo ye n’u sigida ye.
Polimɛriw : Sani u ka sɔgɔ, polimɛriw bɛ tiɲɛ. O fanga dɔgɔyali bɛ se ka kɛ sababu ye ka kari, ka kirin, walima ka kulɛri caman bɔ.
Oksidan ye mun ye?
Oksidan ye kemikaliya ye min na fɛn dɔ bɛ bɔnɛ ɛlektrɔni na, a ka c’a la, a bɛ kɛ ni oksizɛni ye. O ye don o don chimie dɔ ye, a ka c’a la, o bɛ na ni fɛn yetaw ye i n’a fɔ a kulɛri walima a kɛcogo.
kemikɛli kɛcogo min bɛ tali kɛ elekitɔnw bɔnɛni na .
Oksidan na, fɛn dɔ bɛ ɛlektrɔni Di dɔ wɛrɛ ma. A ka c’a la, oksizɛni ye fɛn ye min bɛ sɔn u ma. O wale in bɛ se ka kɛ fɛnɲɛnamaw ni fɛnɲɛnamafagalanw na, u ka jogo caman cili. Oksidan caman sɔrɔli bɛ se ka jira i n’a fɔ:
M → M → E .
Yan, 'm' bɛ fɛn jira (a ka c'a la nɛgɛ) bɛ bɔnɛ ɛlektrɔni na, ka kɛ ion chargement positif (m 1) ye.
Oksidan misaliw don o don ɲɛnamaya kɔnɔ .
Oksidan bɛ nɔ bila fɛnw na an bɛ minnu kɛ don o don. Misali dɔw filɛ minnu bɛ sɔrɔ tuma caman na:
Nɛgɛ ni nɛgɛ nɔgɔli : Ni nɛgɛ bɛ kɛ ni oksizɛni ni ji ye, a bɛ kɛ nɔgɔ ye. Siginiden min bɛ kɛ ka nɔgɔw dilan, o ye:
4Fe + 3O2 + 6H2O → 4Fe(OH)₃
Nin layɛrɛ bilenman-bulu bɛ nɛgɛ fanga dɔgɔya.
warijɛ nɔgɔli : warijɛ bɛ kɛ ni kisɛkisɛ ye fiɲɛ na, ka warijɛ sulfure dilan. A ka kemikaliya ye:
2AG + H2S → AG2S + H2 .
Nin layɛrɛ nɛrɛma in bɛ warijɛ biyew walima fɛnw yeelen bɔ.
Oxydation (Oxydation) bɛ sɔrɔ fɛnɲɛnamafagalanw na .
Oksidan fana bɛ Kɛ fɛnɲɛnamaw la. Nka a tɛ i n’a fɔ nɛgɛw, a nɔfɛkow bɛ se ka nafa sɔrɔ:
Boost in metabolism : An farikolo la, oksidan bɛ dumuni jeni fanga kama, ka farikoloɲɛnajɛ teliya.
Kansɛri farati dɔgɔyali : Oksidan kɛcogo dɔw bɛ kɛ farikolokisɛw la, o bɛ dɛmɛ ka radikali juguw jɛnsɛnni bali, o min bɛ se ka kansɛri farati dɔgɔya.
Nɔgɔ ye mun ye?
Rust ye sɔgɔli suguya kɛrɛnkɛrɛnnen ye min bɛ nɛgɛ ni a nɛgɛw minɛ, i n’a fɔ nɛgɛ. A bɛ dɔn ni kulɛri bilenman-bulu ye ani a ɲɛda cogoya flakɛlen.
Nin sɔgɔli suguya in bɛ sɔrɔ ni nɛgɛ bɛ ji ni ɔkisizɛni sɔrɔ. Nɔgɔ bɔli taabolo bɛ taabolo damadɔw de la:
Oxydation reaction : nɛgɛ bɛ bɔnɛ elekitɔnw na ani a bɛ kɛ ni oksizɛni ye ji sɔrɔli la ka nɛgɛ(II) ionw dilan.
Fe → Fe⊃2;⁺ + 2E⁻
Nɛgɛ idɔrɔkisidi sɔrɔli : Fe⊃2;⁺ ionw bɛ kɛ ni ji ni oksizɛni ye ka nɛgɛ(II) idɔrɔkisidi kɛ.
Fe⊃2;⁺ + 2H₂o + O2 → FE(OH)₂
Oksidan min bɛ sɔrɔ nɛgɛ idɔrɔkisidi la : nɛgɛ(II) idɔrɔkisidi bɛ oksidan ka taa a fɛ ka nɛgɛ(III) idɔrɔkisidi sɔrɔ.
4Fe(OH)₂ + O2 + 2H5 → 4Fe(OH)₃
Nɔgɔ sɔrɔli : nɛgɛ(III) idɔrɔkisidi bɛ farikolojidɛsɛ sɔrɔ ka nɛgɛ(III) ɔkisidi-hidrokisidi kɛ, a bɛ fɔ min ma ko nɔgɔ. Nin nɔgɔ in ye nɛgɛ ɔkisizɛni ni idɔrɔkisidi ɲagaminen ye kosɛbɛ.
4Fe(oh)₂ → Fe3 · 3H₂o .
Sarati caman bɛ se ka kɛ sababu ye ka nɔgɔ bɔli sabati:
Ji sɔrɔli : ji bɛ kɛ i n’a fɔ elekitoroliti, o bɛ se ka kɛ sababu ye ka oksidan-dɔgɔyali walew kɛ minnu ka kan ka kɛ walasa ka nɔgɔ. Nɛnɛba walima sanjiko tilennen bɛ se ka baara teliya.
Oksizɛni ni elekitoroliti tali : oksizɛni nafa ka bon nɔgɔ sɔrɔli la. Yɔrɔ minnu fiɲɛ ka ɲi walima ni oksizɛni caman bɛ u la, olu ka teli ka nɔgɔ. Kɔgɔw ni asidiw fana bɛ se ka dɔ fara nɛgɛ ka kuran-sɛnɛ baara kan, ka nɔgɔ bɔli teliya.
Laminiko : funteni jɔyɔrɔ ka bon nɔgɔ bɔli la. Funteni caman bɛ se ka dɔ fara kemikɛli walew hakɛ kan, o bɛ na ni nɔgɔya ye. Surface nɔgɔw i n’a fɔ nɔgɔ walima tulu bɛ se ka ji minɛ nɛgɛ sanfɛla la, o bɛ kɛ sababu ye ka sigida yɔrɔw kɛ nɔgɔ ye.
Danfara minnu bɛ nɔgɔ, oksidan ani nɔgɔ fan fɛ, o
| bɛ kɛ sababu ye | oksizɛni | ka | sɔrɔ . |
| Yirali | fɛnw tiɲɛni ka da kemikɛli walima kuran-sɛnɛko kan ni sigida ye . | kemikɛli kɛcogo min na fɛn dɔ bɛ bɔnɛ elekitɔnw na, a ka c’a la oksizɛni bɛ sɔrɔ . | Nɔgɔ suguya kɛrɛnkɛrɛnnen min bɛ nɛgɛ ni nɛgɛmuguw minɛ . |
| Nafa | Daɲɛ min ka bon kosɛbɛ, o bɛ fɛnw tiɲɛni suguya caman lajɛ . | kemikɛli waleyali suguya kɛrɛnkɛrɛnnen . | Fɛn kɛrɛnkɛrɛnnen min bɛ sɔrɔ nɛgɛ oksidan na . |
| Fɛn minnu bɛ nɔ bila . | Fɛn suguya caman i n’a fɔ nɛgɛ, seramiki ani polimɛriw . | Fɛn minnu bɛ kɛ ni fɛnɲɛnamaw ye ani minnu tɛ fɛnɲɛnamaw ye . | kɛrɛnkɛrɛnnenya la nɛgɛ n' a ka fɛn dilannenw . |
| Sigidako koɲɛw . | A bɛ elekitoroliti dɔ de wajibiya . | A mago bɛ oksizɛni na walima oksidan wɛrɛ . | Oksizɛni ni ji fila bɛɛ bɛ ɲini . |
| Produits . | A bɛ se ka kɛ sababu ye ka fɛnɲɛnamafagalan suguya caman sɔrɔ . | A bɛ ɔkisizɛni dilan . | A bɛ nɛgɛ ɔkisizɛni ni idɔrɔkisidiw dilan . |
| kemikɛli taabolo . | A ka c’a la, a bɛ tali kɛ ɛlektrɔniki jiginni na fɛn ni sigida cɛ . | Elektɔronw bɔnɛni, tuma caman na oksizɛni na . | Nɛgɛ bɛ kɛ ni oksizɛni ni ji ye . |
| Yecogo | A suguya caman (misali la, pitting, scaling) . | A bɛ se ka ye walima a tɛ ye ka kɛɲɛ ni fɛn ye . | Kulɛri bilenman-bilen bɛ danfara . |
| Barikaya | A ka c’a la, a bɛ tiɲɛni kɛ fɛnw cogoyaw la . | bɛ se ka nafa sɔrɔ (misali la, layɛrɛw lakanani) walima ka tiɲɛni kɛ . | A bɛ tiɲɛni kɛ tuma bɛɛ nɛgɛmafɛnw na . |
| sɔrɔko nɔfɛko . | Nafa bɛ sɔrɔ izini suguya caman kɔnɔ . | A bɛ danfara ka kɛɲɛ ni a kɔnɔkow ye . | A nafa ka bon nɛgɛso baara la . |
Nɔgɔya, oksidan ani nɔgɔ bɛ se ka nɔ min bila mɔgɔ la .
Nɔgɔya, oksidan ani nɔgɔ bɛ na ni kɔlɔlɔw ye minnu bɛ se ka taa yɔrɔ jan na, minnu bɛ tɛmɛ fɛnw tiɲɛni kan. U bɛ se ka kɛ sababu ye ka sɔrɔko bɔnɛba sɔrɔ, ka faratiw lase mɔgɔ ma, ani hali ka sigida tiɲɛ.
sɔrɔko kɔlɔlɔw .
Musaka minnu bɛ sɔrɔ nɔgɔ, oksidan ani nɔgɔ la, olu bɛ mɔgɔ kabakoya. Nace International ka sɛgɛsɛgɛli dɔ la, diɲɛ kɔnɔ musaka min bɛ kɛ ka fɛnw sɔgɔ, o bɛ jate dɔrɔmɛ miliyari 2,5 ye san o san, o bɛ bɛn 3,4% ma diɲɛ PIB la.
O musakaw ye:
Fɛnw ni fɛnw falenni walima u dilancogo musaka tilennenw walima u dilancogo .
Musow ka musaka minnu tɛ taa ɲɛ i n’a fɔ fɛn dilanni bɔnɛ, sigida tiɲɛni, ani kiritigɛ .
Ladonni musakaw ka ɲɛsin fɛnɲɛnamafagalanw kunbɛnni ni u kɔlɔsili fɛɛrɛw ma .
Industries minw bɛ tɔɔrɔ kosɛbɛ nɔgɔw fɛ, olu dɔw ye:
tulu ni gazi .
Transport (Automotique, Aerospace, Rail, ani Marine)
Infrastructure (bonw, pibilikiw, ani sow) .
Fɛn dilanni ni a baara .
Lakanali haminankow .
Nɔgɔ, oksidan ani nɔgɔ bɛ se ka sow, bolifɛnw ani fɛnsɔrɔsiraw jɔcogo dafalen tiɲɛ. O tiɲɛni bɛ se ka kɛ sababu ye ka dɛsɛba lase mɔgɔ ma, ka mɔgɔ ka ɲɛnamaya bila farati la.
Lakanali farati minnu bɛ sɔrɔ nɔgɔli fɛ, olu misali dɔw ye:
Bridges walima sow binni ka da nɛgɛ barika dɔgɔyali kan .
Pibilikiw dɛsɛli, o bɛ na ni tulu bɔli ye walima gazi bɔli .
Fɛn minnu ye fɛn nafamaw ye awiyɔnw walima mɔbiliw kɔnɔ .
Ji minta nɔgɔli ka bɔ pibilikiw la .
Sigida laminiko nɔfɛkow .
Nɔgɔya, oksidan ani nɔgɔ fana bɛ se ka kɛ sababu ye ka sigida kɔlɔlɔbaw sɔrɔ. Ni fɛn minnu bɛ fɛnw sɔgɔ, olu ma ɲɛ, u bɛ se ka fɛn faratilenw bila sigida la.
I n'a fo:
Fɛnmarayɔrɔw minnu bɛ fɛnw mara, olu bɛ se ka kemikɛlifɛnw walima petoroli fɛnw bɔn, ka dugukolo nɔgɔ ani ka dugujukɔrɔjiw bɔ .
Nɛgɛ nɔgɔ nɔgɔlenw bɛ se ka nɛgɛ gɛlɛnw don ɲɛnamaya kɛcogo la .
Infrastructures (fɛnw tiɲɛni) bɛ se ka kɛ sababu ye ka baarakɛbaliya sɔrɔ, ka dɔ fara gazi bɔli kan .
Bana kunbɛnni ni a dɔgɔyali fɛɛrɛw .
Ni aw ye nɔgɔ, oksidan ani nɔgɔ bali ani ka a nɔgɔya, o bɛ taabolo caman de wajibiya. O bɛ tali kɛ fɛnw sugandili ɲuman na, dilancogo jateminɛw, lakanani furakɛli, sigida kɔlɔsili, ani kɔlɔsili kɛli tuma bɛɛ.
Material Selection ani Design .
Fɛɛrɛ ɲuman minnu bɛ se ka kɛ walasa ka fɛnw nɔgɔ, olu dɔ ye ka baara kɛ ni fɛnw ye minnu bɛ se ka a kunbɛn u bangenen na. Misali dɔw minnu bɛ sɔrɔ fɛnɲɛnamafagalanw na minnu bɛ se ka sɔgɔ, olu dɔw ye:
O fɛnw bɛ kɛ ka ɔkisizɛni lakananen dɔ dilan u sanfɛ, o bɛ dɛmɛ ka sɔgɔli wɛrɛw bali.
Dilan fana jɔyɔrɔ ka bon kosɛbɛ nɔgɔ bɔli la. Ɛntɛrinɛti kalanbagaw ka kan ka:
Aw bɛ aw yɛrɛ tanga nkɔni nɔgɔlenw ni cɛncɛnw ma yɔrɔ minnu na fɛn nɔgɔlenw bɛ se ka dalajɛ .
Aw bɛ aw jija ka jibolisiraw sɔrɔ ka ɲɛ walasa ka ji jɔlenw bali .
Aw bɛ jogindaw weldalenw kɛ ɲɔgɔndanw na minnu bɛ siri walima ka u siri ni u bɛ se ka kɛ ni u bɛ se ka kɛ .
A bɛ se ka kɛ ka fɛnw tanga .
Ni aw ye fɛnw kɛ minnu bɛ mɔgɔ tanga fɛn dɔ ma ani furakɛli minnu bɛ kɛ fɛn dɔ kan, o bɛ se ka dɛmɛ don ka nɔgɔ bali. Fɛɛrɛ minnu bɛ kɛ tuma caman na, olu dɔw ye:
Pentiw ni tuluw : Olu bɛ barika don nɛgɛ ni sigida cɛ, o bɛ kɛ sababu ye ka fɛn nɔgɔlenw bali.
Galvanizing : O ye nɛgɛ walima nɛgɛ dacogo ye ni zinki ye, min bɛ nɛgɛmafɛnw tiɲɛ saraka la walasa ka nɛgɛ jukɔrɔla lakana.
Kuranko : A bɛ nɛgɛ finman dɔ bila nɛgɛ la min bɛ se ka sɔgɔ ka ɲɛ, i n’a fɔ chrome walima nickel, nɛgɛ wɛrɛ sanfɛ.
Anodizing : Nin wale in bɛ ɔkisizɛni layɛrɛ finman dɔ dilan nɛgɛw sanfɛ i n’a fɔ aliminiyɔmu.
Passivation : A bɛ kɛ ni nɛgɛ sanfɛla furakɛli ye ni kemikɛli fura ye walasa ka ɔkisizɛni lakananen dɔ sɔrɔli sabati.
sigida kɔlɔsili .
Ni aw ye sigida kɔlɔsi, o bɛ se ka dɛmɛ don ka fɛnw sɔrɔ minnu bɛ kɛ ka fɛnw tiɲɛ. Fɛɛrɛ dɔw ye ninnu ye:
ka nɛnɛ hakɛ dɔgɔya walasa ka ji bɔ fiɲɛ na .
Funteni labɛnni walasa ka a yɛrɛ tanga jiginni jugumanba ma min bɛ se ka sɔgɔli teliya .
Aw bɛ baara kɛ ni dehumidifiers, climatiseurs, walima chauffages ye walasa ka sigida mara .
Fɛn minnu bɛ mara yɔrɔ jalenw na, fiɲɛ bɛ don minnu na kosɛbɛ, olu yɔrɔ ka jan fɛnw na minnu bɛ se ka tiɲɛ .
Kɔlɔsili ni sɛgɛsɛgɛli min bɛ kɛ ni nɔgɔ ye .
Kɔlɔsili ni sɛgɛsɛgɛli kɛli tuma bɛɛ bɛ se ka dɛmɛ don ka sɔgɔsɔgɔninjɛ dɔn joona, o bɛ a to a bɛ se ka kɛ sababu ye ka dɛmɛ don a la waati bɛnnen na. O bɛ tali kɛ:
Aw bɛ yɔrɔw lajɛ minnu bɛ ye ɲɛ na walasa ka u sɔgɔsɔgɔ, i n’a fɔ u ɲɛ 10nan, walima u bɛ kɛ fɛn ye min bɛ kɛ ka fɛnw sɔgɔ, walima minnu bɛ kɛ ka fɛnw sɔgɔ .
Baara kɛli ni sɛgɛsɛgɛli kɛcogo minnu tɛ tiɲɛni ye, i n’a fɔ ultrasonic thickness measurement walima radiography, walasa ka a jateminɛ ko a bɛ se ka tiɲɛ ka sɔrɔ a ma fɛn tiɲɛ .
sɛgɛsɛgɛli jaabiw sɛbɛncogo caman marali walasa ka nɔgɔ taabolo lajɛ waati kɔnɔ .
Ɲɛtaa minnu bɛ kɛ nɔgɔ kunbɛnni ni a kɛcogo la .
Kɛlɛ bɛ senna ka taa a fɛ, ɲininikɛlaw ni ɛntɛrinɛti injiniyɛriw bɛ ka fɛɛrɛ kuraw labɛn walasa k’a nɔfɛkow bali ani k’u nɔgɔya. O ɲɛtaa ninnu bɛ daminɛ ni finimugu dafalen ye ka taa a bila waati yɛrɛ kɔlɔsili fɛɛrɛw la ani fɛn kuraw la.
Dakun minnu bɛ baara kɛ kosɛbɛ, olu yiriwali .
Yɔrɔ dɔ min bɛ taa ɲɛ kosɛbɛ, o ye ka lakana finidoncogo kɔrɔlenw labɛn. O finimuguw bɛ se ka kɛ sababu ye ka fɛnw tiɲɛ, ka u sɛgɛn, ani ka u kɛlɛ ni kemikɛli ye. Misali kɛrɛnkɛrɛnnen dɔw ye:
Epoxy ni polyurethane coatings : olu bɛ nɔrɔli ɲuman di, u bɛ mɛn, ani u bɛ se ka ji ni fɛnɲɛnamafagalanw kɛlɛ. U bɛ baara kɛ kosɛbɛ iziniw ni kɔgɔjida la.
Fluoropolymer coatings : A bɛ dɔn u ka kemikaliya danma ani u ka ɲɔgɔnkanu dɔgɔyacogo la, fluoropolymer coatings, i n’a fɔ PTFE (Teflon), olu ka ɲi kosɛbɛ sigida gɛlɛnw na.
Bio-inspired self-healing coatings : Nin fini kura ninnu bɛ fɛnɲɛnamaw yɛrɛ kɛnɛyacogo ladege. U bɛ sɔrɔ ni mikroskɔpi ye minnu falen bɛ kɛnɛya furaw la minnu bɛ bɔ ni finimugu tiɲɛna, o b’a to a bɛ se k’a yɛrɛ dilan.
Katodiki lakanani ni a sɔgɔli balilanw .
Katodi lakanani ye fɛɛrɛ ye min sigilen don koɲuman nɛgɛw jɔli balili la. O ye kuran fitinin dɔ kɛli ye nɛgɛ la, k’a kɛ katodi ye kuran-sɛnɛfɛn dɔ kɔnɔ. O bɛ nɛgɛ bali ka sɔgɔsɔgɔ.
Fɛn minnu bɛ kɛ ka fɛnw sɔgɔ, olu ye fɛnw ye minnu, ni u farala sigida nɔgɔlen kan, olu bɛ dɔ bɔ nɔgɔ hakɛ la. U bɛ baara kɛ ni filimu lakanani ye nɛgɛ sanfɛla kan walima ka sigida ka chimie sɛmɛntiya.
Kɔsa in na, ɲɛtaa minnu kɛra o fɛɛrɛw la, olu dɔw ye:
Katodiki lakanani fɛɛrɛ minnu bɛ yen sisan, olu kabakoyara, minnu bɛ baara kɛ ni tile fanga ye walima fanga kura sɔrɔyɔrɔ wɛrɛw .
Organique corrosion inhibiteurs minnu bɛ sɔrɔ jiriw bɔlenw na ani fɛn wɛrɛw la minnu tɛ fɛn tiɲɛ .
Smart coatings minnu bɛ conrosion inhibiteurs don u la ani ka u bɔ ni u mago bɛ u la .
Kɔlɔsili waati yɛrɛ la ani lasɔmini kɛcogo joona .
Nɔgɔya sɔrɔli joona, o nafa ka bon kosɛbɛ walasa ka balawuw bali. Kɔlɔsili sira minnu bɛ kɛ waati yɛrɛ la, olu bɛ baara kɛ ni sensɛriw ye walasa ka to ka paramɛtiri suguya caman suman minnu bɛ tali kɛ fɛnw sɔgɔli la, i n’a fɔ:
Electrochimique potentiel .
corrosion current .
sigida koɲɛw (funteni, nɛnɛ, pH) .
O sigidaw bɛ se ka baarakɛlaw lasɔmi ni nɔgɔ hakɛ tɛmɛna hakɛ kan min bɛ sɔn, o bɛ sira di ka dɛmɛ don waati bɛnnen na. Sisitɛmu ɲɛtaa dɔw yɛrɛ bɛ baara kɛ ni masin kalanni algorisimuw ye walasa ka nɔgɔ hakɛw fɔ ka da tariku kunnafoniw kan.
Fɛn kuraw ni fɛɛrɛ kuraw minnu bɛ kɛ ka nɔgɔw kunbɛn kɔgɔjida laminiw na .
Kɔgɔjida laminiw ka gɛlɛn kɛrɛnkɛrɛnnenya la ni a bɛ tali kɛ fɛnw sɔgɔli kunbɛnni na. Kɔgɔji, fɛnɲɛnamafagalanw, ani masinw ka degunw faralen ɲɔgɔn kan, o bɛ se ka hali fɛn minnu barika ka bon kosɛbɛ, olu tiɲɛ joona.
Ɲininikɛlaw bɛ ka fɛn kuraw ni fɛɛrɛ kuraw labɛn walasa ka o gɛlɛyaw ɲɛnabɔ, i n’a fɔ:
Korozi tɛ se ka kɛ fɛn minnu na, olu bɛ sɔrɔ ni chrome, nickel ani molybdenum hakɛ caman bɛ sɔrɔ .
Fɛn minnu bɛ kɛ ɲɔgɔn fɛ minnu bɛ nɛgɛw fanga fara ɲɔgɔn kan ni polimɛriw ka sɔgɔli ye .
Nanostructured coatings minnu bɛ super-hydrophobic surface dilan, ka ji ni fɛn wɛrɛw bali ka nɔrɔ nɛgɛ la .
Electrochimique Corrosion Control fɛɛrɛw, i n’a fɔ katodiki lakanani ni saraka anodiw ye .
Kuncɛli
Nɔgɔ, oksidan, ani nɔgɔ bɛ tali kɛ ɲɔgɔn na nka u bɛ danfara don u ni ɲɔgɔn cɛ minnu bɛ se ka nɔba bila fɛnw ni fɛnw na. Hali ni oksidan ye kemikoroba ye, sɔgɔli bɛ fɛnw tiɲɛ kɛrɛnkɛrɛnnenya la, wa nɔgɔ bɛ nɛgɛ ni a nɛgɛw dɔrɔn de minɛ.
O danfara ninnu faamuyali nafa ka bon kosɛbɛ walasa ka nafolo suguya caman lakana ani ka u ka ɲɛnamaya janya. Sɛgɛsɛgɛli minnu bɛ senna nɔgɔko dɔnniya kan, olu kun ye ka banakunbɛn fɛɛrɛw ni fɛɛrɛ kuraw labɛn walasa ka nin gɛlɛya basigilen ninnu kɛlɛ.
