Kedu ihe kpatara nchara nwere nnukwu carbon carbon ji agbaji ngwa ngwa? Akụkụ 2

2022-06-28

Site na nsonaazụ nke ule polarization voltaji siri ike, ka carbon dị elu nke ihe nlele ahụ, ka ọ na-adịkarị mfe na mmeghachi omume mbelata nke cathodic (mmeghachi omume ọgbọ nke hydrogen) na mmeghachi omume mgbasa nke anodic na gburugburu acidic. E jiri ya tụnyere matriks gbara ya gburugburu nwere oke ikuku hydrogen dị ala, carbide na-arụ ọrụ dị ka cathode nwere obere akụkụ olu.

Dị ka nsonaazụ nke ule electrochemical hydrogen permeation ule si dị, ka carbon na-abawanye na oke nke carbides dị na nlele ahụ, na-eme ka ọnụọgụ nke ikuku hydrogen dị ntakịrị ma na-abawanye ike. Ka carbon ọdịnaya na-abawanye, nguzogide hydrogen embrittlement na-ebelatakwa.

Nnwale ntakiri ntakiri nwayo nwayo gosipụtara na ka carbon dị elu na-abawanye, na-ebelata nguzogide nrụrụ nrụrụ. N'ikwekọ na ọnụ ọgụgụ dị nta nke carbides, dị ka mmeghachi omume mbelata hydrogen na ọnụọgụ nke hydrogen a na-agbanye n'ime ihe nlele ahụ na-abawanye, mmeghachi omume mgbasa nke anodic ga-eme, na nhazi nke mpaghara slips ga-eme ngwa ngwa.


Mgbe ọdịnaya carbon na-abawanye, carbides ga-ebuli n'ime nchara. N'okpuru mmeghachi omume nke electrochemical corrosion mmeghachi omume, ohere nke hydrogen embrittlement ga-abawanye. Iji hụ na nchara ahụ nwere nguzogide corrosion kacha mma na nguzogide hydrogen embrittlement, ọdịda carbide na njikwa obere olu bụ ụzọ njikwa dị irè.

Ngwa nke ígwè n'ime akụkụ akpaaka na-adabere na njedebe ụfọdụ, nakwa n'ihi mbelata ya dị ịrịba ama na nguzogide hydrogen embrittlement, nke na-akpata site na mmiri mmiri corrosion. N'ezie, nke a hydrogen embrittlement susceptibility nwere njikọ chiri anya na carbon ọdịnaya, na ọdịda nke iron carbides (Fe2.4C/Fe3C) n'okpuru obere hydrogen overvoltage ọnọdụ.

N'ozuzu, maka mmeghachi omume corrosion a na-ahụ anya n'elu nke nrụgide corrosion cracking phenomenor ma ọ bụ ihe na-eme ka hydrogen embrittlement, a na-ewepụ nrụgide fọdụrụnụ site na ọgwụgwọ okpomọkụ ma na-abawanye arụmọrụ ọnyà hydrogen. Ọ dịghị mfe ịzụlite ultra-elu-ike automotive ígwè nwere ma magburu onwe corrosion nguzogide na hydrogen embrittlement iguzogide.

Ka carbon ọdịnaya na-abawanye, ọnụ ọgụgụ mbelata hydrogen na-abawanye, ebe ọnụego mgbasa ozi hydrogen na-ebelata nke ukwuu. Isi ihe na-eji carbon ọkara ma ọ bụ nchara dị elu dị ka akụkụ ma ọ bụ ogwe nnyefe bụ ijikwa akụrụngwa carbide nke ọma na microstructure.