Izinhlobo ezivamile zokugqwala kwensimbi kuma-heaters

I-Metal corrosion ibhekisela ekucekeleni phansi kwensimbi ekhiqizwa isenzo samakhemikhali noma se-electrochemical sendawo ezungezile, futhi ngokuvamile kuhlanganiswa nezici zomzimba, zemishini noma zezinto eziphilayo, okungukuthi, ukucekelwa phansi kwensimbi ngaphansi kwesenzo sendawo ezungezile.

Izinhlobo ezijwayelekile zokugqwala kwensimbi yesishintshi sokushisa sepuleti zimi kanje:

Ukugqwala okufanayo endaweni yonke evezwe endaweni ephakathi nendawo, noma endaweni enkulu, umonakalo wokugqwala owumfaniswano omkhulu ubizwa ngokuthi ukugqwala okufanayo.

Ukugqwala kweCrevice Ukugqwala okukhulu kwemifantu kwenzeka emifantwini nasezingxenyeni ezimboziwe zengaphezulu lensimbi.

Ukugqwala Kokuthintana Izinhlobo ezimbili zensimbi noma ingxubevange ezinokuthintana okungaba khona okuhlukile, futhi zicwiliswe kusixazululo se-electrolyte solutive, kukhona i-current phakathi kwazo, izinga lokugqwala lamandla ensimbi enhle liyehla, izinga lokugqwala kwamandla ensimbi angalungile liyakhula.

Ukugqwala kwe-Erosion Ukugqwala ukugqwala kuwuhlobo lokugqwala olusheshisa inqubo yokugqwala ngenxa yokunyakaza okuhlobene phakathi kwendawo ephakathi nendawo nensimbi.

I-selective corrosion Isenzakalo sokuthi i-elementi ku-alloy igqwalile ingene phakathi ibizwa ngokuthi i-selective corrosion.

Ukugqwala kwe-pitting okugxile ezindaweni ezincane endaweni yensimbi yokugqwala okukhulu kubizwa ngokuthi i-pitting corrosion, noma ukugqwala kwembotshana, ukugqwala kwe-pitting.

I-Intergranular corrosion I-Intergranular corrosion iwuhlobo lokugqwala olucekela phansi umngcele wokusanhlamvu kanye nendawo eseduze nomngcele wokusanhlamvu wensimbi noma ingxubevange, kuyilapho okusanhlamvu ngokwako kungagqwalile kancane.

Ukucekelwa phansi kweHydrojeni Ukucekelwa phansi kwezinsimbi ezixazululweni ze-electrolyte ngokungena kwe-hydrogen kungenzeka ngenxa yokugqwala, ukuchotshozwa, ukuvikelwa kwe-cathodic, noma i-electroplating.

I-Stress corrosion fracture (SCC) nokukhathala kokugqwala ukuphuka kwempahla okubangelwa isenzo esihlanganyelwe sokugqwala kanye nengcindezi yokuqina ohlelweni oluthile lwensimbi.