Corrosion qauv ntawm cov hlau yuav feem ntau tau muab faib ua ob pawg: corrosionicive thiab hauv qab corrosion. Thiab cov cheeb tsam corrosion tau muab faib ua: pitting corrosion, corrosion, kev nyuaj siab corrosion, kev ntxhov siab corrosion, corrosion rog thiab hnav corrosion.
Kev kho siab corrosion yog cov cim los ntawm kev sib cais xeb ntawm cov hlau ntawm cov hlau, kom cov hlau uas muaj ntau dua li. Kev Corrosioniccion tshwm sim nyob rau hauv qhov xwm txheej uas cov nruab nrab hauv siab tuaj yeem ncav cuag txhua feem ntawm cov hlau sib dhos, thiab cov koom haum ntawm cov hlau yog cov hlau tsis sib xws.
Pitting corrosion, tseem hu ua me me corrosion, yog ib hom corrosion concentrated nyob rau hauv cov hlau loj heev thiab tob rau hauv lub hlau sab hauv pore-zoo li corrosion qauv.
Pitting corrosion feem ntau ntsib cov khoom, nruab nrab thiab electrochemical.
1, pitting feem ntau tshwm sim hauv qhov yooj yim passivation ntawm cov hlau saum npoo (xws li stainless hlau (Aluminium) lossis saum npoo ntawm cov hlau nrog Cathodic plating.
2, Pitting tshwm sim nyob rau hauv muaj cov ions tshwj xeeb, xws li halogen ions hauv nruab nrab.
3, pitting corrosion tshwm sim nyob rau hauv ib qho tseem ceeb tseem ceeb tshaj plaws saum toj no, hu ua pitting muaj peev xwm lossis muaj peev xwm tawg.
Nruab nrab corrosion yog cov khoom siv hlau nyob rau hauv nruab nrab ntawm cov khoom sib luag lossis cov qoob loo nplej nyob ze ntawm kev sib koom ua ke ntawm cov nplej ntawm kev corrosion tshwm sim.
Xaiv corrosion hais txog ntau cov feem ntau cov khoom sib xyaw ua ke nyob rau hauv ntau yam kev nyiam ua kom yaj, tus txheej txheem no yog tshwm sim los ntawm kev sib txawv hauv lub taub hau.
Crevice corrosion yog lub xub ntiag ntawm electrolyte ntawm cov hlau thiab hlau thiab hlau thiab cov hlau loj, cov neeg tsiv teb tsaws chaw ntawm nruab nrab yog thaiv thaum lub xeev corrosion.
Qhov tsim ntawm cevice corrosion:
1, kev sib txuas ntawm cov qauv sib txawv.
2, hauv cov hlau saum npoo ntawm cov nyiaj tso cia, txuas, txheej thiab lwm yam khoom muaj xeb muaj nyob.
Lub Sijhawm Post: Mar-15-2024