Umxholo weCr kunye no-C uchaphazela njani ukumelana nokuguguleka kweepleyiti ezinganyangekiyo?

Ikhabhoni yeyona nto iphambili yokwenza iikhabhoni. Xa kukho i-Cr, ikhabhoni idibana ne-chromium ukwenza iikhabhoni ze-chromium (Cr₇C₃, Cr₃C₂, njl.njl.). Okukhona umxholo wekhabhoni uphezulu, kokukhona umxholo wekhabhoni utyebile, ngaloo ndlela kuphucuka ubulukhuni bezinto kunye nokumelana nokuguguleka kwazo.

I-Chromium yinto ebalulekileyo ekwakhiweni kwee-carbides eziqinileyo ezizinzileyo, kwaye ikwanozinzo oluhle lobushushu obuphezulu kunye nokumelana ne-oxidation. Kwinkqubo ye-Cr ephezulu, iikristale ze-chromium carbide zikhula zibe yi-columnar kwaye zibekwe ngokuthe nkqo kwicala lokuguguleka, nto leyo enceda ukumelana nokukrweleka kunye nokuguguleka okunefuthe. Ukongeza, i-Cr inokudlala indima ekucocweni kweenkozo kwi-weld kwaye iphucule uxinano lwentlangano.

Kuyilo, umxholo we-Cr uhlala ulawulwa kwi-18% ~ 30%, kwaye umxholo we-C uphakathi kwe-3% ~ 5%. Lo mlinganiselo unokwenza inani elikhulu lee-carbides zohlobo lwe-Cr₇C₃ ezisasazwe ngokulinganayo ezinobunzima obuphezulu kunye ne-coefficient ephantsi yokungqubana, nto leyo ephucula ngempumelelo ubomi benkonzo yesixhobo phantsi kweemeko zoxinzelelo oluphezulu kunye nefuthe eliphezulu.