Iji hụ na ike dị elu, a ghaghị ịgbakwunye carbon na ígwè, nke ígwè carbides na-ebuli. Site n'echiche electrochemical, ígwè carbide na-arụ ọrụ dị ka cathode, na-eme ka mmeghachi omume mgbasa nke anodic dị na gburugburu mkpụrụ. A na-ekwukwa na mmụba nke obere nha nke carbide iron dị n'ime microstructure bụ ihe na-akpata oke ikuku hydrogen nke carbides.

Elu nke ígwè dị mfe ịmepụta na ịmịnye hydrogen. Mgbe atom hydrogen na-abanye n'ime ígwè ahụ, oke nha nke hydrogen nwere ike ịbawanye elu, n'ikpeazụkwa iguzogide hydrogen embrittlement nke ihe ahụ na-ebelata nke ukwuu.

Mbelata dị ịrịba ama na nguzogide corrosion na hydrogen embrittlement resistance nke nchara dị elu ọ bụghị nanị na-emerụ ihe onwunwe nke ígwè ahụ, kamakwa na-egbochi ngwa ngwa nke ígwè ahụ.

Dịka ọmụmaatụ, mgbe igwe ụgbọ ala na-ekpuchi ebe dị iche iche na-emebi emebi dị ka chloride, n'okpuru mmetụta nke nrụgide, ihe mgbagwoju anya corrosion cracking (SCC) nke nwere ike ime ga-etinye nnukwu ihe egwu na nchekwa nke ahụ ụgbọ ala.

Ọdịnaya nke carbon dị elu, na-ebelata ọnụọgụ mgbasa ozi hydrogen yana ịdị elu hydrogen solubility. Ọkà mmụta Chan kwuru n'otu oge na ntụpọ lattice dị iche iche dị ka precipitates (dị ka ebe ọnyà maka atom hydrogen), ikike, na pores dabara na ọdịnaya carbon. Mmụba nke ọdịnaya carbon ga-egbochi mgbasa hydrogen, yabụ ọnụọgụ mgbasa ozi hydrogen dịkwa ala.

Ebe ọ bụ na ọdịnaya carbon dị nhata na hydrogen solubility, ka ọnụ ọgụgụ dị ukwuu nke carbides dị ka ọnyà hydrogen atom, ka obere ikuku hydrogen dị n'ime ígwè ahụ, otú ahụ ka hydrogen solubility dị ukwuu, na hydrogen solubility nwekwara ozi gbasara hydrogen diffusible. ya mere, ike nke ikuku hydrogen bụ nke kachasị elu. Site na mmụba nke ọdịnaya carbon, ọnụọgụ mgbasa ozi nke atom hydrogen na-ebelata na mkpokọta hydrogen dị n'elu na-abawanye, nke kpatara mbelata nke oke ikuku hydrogen na elu igwe.