Iipateni zokubola kwesinyithi zinokwahlulwa ngokubanzi zibe ngamacandelo amabini: umhlwa obanzi kunye nomhlwa wendawo.Kwaye i-corrosion yendawo inokohlulwa ibe: i-corrosion ye-pitting, i-corrosion ye-crevice, i-galvanic coupling corrosion, i-intergranular corrosion, i-elective corrosion, i-corrosion yoxinzelelo, i-corrosion corrosion kunye ne-corrosion yokuguga.
Umhlwa Comprehensive luphawulwa umhlwa ngokulinganayo yahlulwe kumphezulu metal, ukuze isinyithi jikelele thinning.I-Corrosion Comprehensive yenzeke phantsi kwemeko yokuba i-corrosive medium inokufikelela kuzo zonke iindawo zomphezulu wesinyithi ngokufanayo, kwaye ukubunjwa kunye nokulungelelaniswa kwesinyithi kufana ngokufanayo.
I-Pitting corrosion, ekwaziwa ngokuba yi-corrosion emngxunyeni omncinci, luhlobo lwe-corrosion olugxininiswe kuluhlu oluncinci kakhulu lomphezulu wesinyithi kunye nobunzulu kwipateni yentsimbi yangaphakathi enjenge-corrosion.
Iimeko zemibhobho yomhlwa ngokubanzi zihlangabezana neemeko zemathiriyeli, eziphakathi kunye ne-electrochemical:
I-1, i-pitting ngokuqhelekileyo iyenzeka kwi-passivation elula ye-metal surface (efana nensimbi engenasici, i-aluminium) okanye umphezulu wesinyithi kunye ne-cathodic plating.
2, i-pitting yenzeke phambi kwee-ion ezikhethekileyo, ezifana ne-halogen ions phakathi.
3, ukonakala kwemingxuma kwenzeka kwisakhono esithile esibalulekileyo esingasentla, esibizwa ngokuba sinako sokugqobhoza okanye ukugqabhuka okunokwenzeka.
I-Intergranular corrosion yimathiriyeli yesinyithi kwindawo ethile enomhlwa ecaleni kwemida yezinto eziziinkozo okanye imida yeenkozo kufutshane nomhlwa, ukuze ilahleko yebhondi phakathi kweenkozo zesenzeko somhlwa.
I-corrosion ekhethiweyo ibhekisela kumacandelo asebenzayo ngakumbi kwii-alloys ezininzi ezikhethiweyo ngokukhethiweyo, le nkqubo ibangelwa ukuhlukana kwe-electrochemical kumacandelo e-alloy.
I-Crevice corrosion kubukho be-electrolyte phakathi kwesinyithi kunye nentsimbi kunye nesinyithi kunye ne-non-metal zenza umsantsa omxinwa, ukufuduka kwe-medium kuvaliwe xa imeko ye-corrosion yendawo.
Ukwenziwa komhlwa kwemingxuma:
1, unxibelelwano phakathi kwamacandelo ahlukeneyo olwakhiwo.
I-2, kwindawo yesinyithi yeediphozithi, izinamathiselo, iingubo kunye nezinye iimveliso zokubola zikhona.
Ixesha lokuposa: Mar-15-2024