Corrosion ke ts'ebetso ea tlhaho, eo tšepe e senyehang butle-butle ke ts'ebetso ea lik'hemik'hale kapa electrochemical ha e ntse e kopana le tikoloho ea eona.Mehloli e tloaelehileng ea kutu ke pH, CO2, H2S, chloride, oksijene le baktheria.Oli kapa khase li bitsoa "bolila" ha bongata ba hydrosulfides, H2S, bo phahame ho feta ka tloaelo.Oksijene e na le bothata bo boholo lilibeng tsa ente, EOR.Lintho tse seng li ntse li le tlase haholo li baka maemo a holimo a kutu.Tabeng ena, ho sebelisoa li-scavanger tsa oksijene.
Libaktheria li ka hola ka har'a liphaephe le litanka tlas'a maemo a anaerobic, e leng se hlahisang khatello e phahameng ea H2S.Ho tsuba ho bakoa ke sena mme ho ka mpefala.Ho bokellana ha libaktheria hangata ho etsahala lits'ebetsong tsa lebelo le tlase.Lintho tse ling tse tlatsetsang ho bola ke mocheso, ho khopama, khatello, lebelo le boteng ba lintho tse tiileng.
Re tseba mefuta e latelang e tloaelehileng ea kutu:
1. Ho senyeha ha sebaka: pitting, crevice corrosion, filiform corrosion
2. Galvanic corrosion
3. Kakaretso tlhaselo kutu
4. Ho bola ho thusoang ke ho phalla, FAC
5. Intergranular corrosion
6. De-alloying
7. Ho phunyeha ha tikoloho: khatello ea kelello, mokhathala, H2-induced, embrittlement ea tšepe ea metsi
8. Fretting corrosion
9. Ho bola ha mocheso o phahameng
Bakeng sa ho laola corrosion, ho bohlokoa ho ela hloko mehato e latelang:
● Toba taba ha u khetha boitsebiso bo nepahetseng.Litsebi tsa metallurgic li hlalosa hore na ke litšepe life tse lokelang ho sebelisoa.
● Hape ho penta le ho penta ke lihlooho tse loketseng ho khetha hantle.
● Ho fetola tlhahiso ho eketsa kapa ho fokotsa lebelo la phaephe.
● Haeba ho na le likaroloana tsa mokelikeli, ho fokotseha ho ka ba molemo bakeng sa bophelo bohle ba liletsa le liphaephe.
● Ho laola pH, ho fokotsa bongata ba chloride, ho felisa oksijene le baktheria le ho fokotsa sekhahla sa ho ntša oxidation ea tšepe ka liente tsa lik'hemik'hale.
● Motsoako o sebetsang hantle le o molemohali oa lik'hemik'hale ho laola khatello ea phaephe kapa sekepeng moo mokelikeli o lokelang ho kena teng.
Nako ea poso: Apr-27-2022