Stainless hlau muaj qhov tsawg kawg nkaus ntawm 10.5% chromium, uas ua rau nyias, pom tsis tau, thiab cov txheej txheem oxide heev nyob rau saum npoo ntawm cov hlau hu ua "passive txheej."Cov txheej txheem passive no yog dab tsi ua rau cov hlau tsis muaj zog tiv taus xeb thiab xeb.
Thaum cov hlau raug oxygen thiab noo noo, chromium nyob rau hauv cov hlau reacts nrog oxygen nyob rau hauv cov huab cua los ua ib tug nyias txheej ntawm chromium oxide nyob rau saum npoo ntawm cov hlau.Cov txheej chromium oxide no muaj kev tiv thaiv zoo heev, vim nws ruaj khov thiab tsis tawg yooj yim.Yog li ntawd, nws zoo tiv thaiv cov hlau hauv qab los ntawm kev sib cuag nrog huab cua thiab noo noo, uas tsim nyog rau cov txheej txheem xeb tshwm sim.
Cov txheej txheem passive yog qhov tseem ceeb rau kev tiv thaiv corrosion ntawm stainless hlau, thiab tus nqi ntawm chromium hauv cov hlau txiav txim siab nws lub peev xwm los tiv thaiv xeb thiab corrosion.Cov ntsiab lus chromium siab dua ua rau muaj kev tiv thaiv ntau dua thiab tiv thaiv corrosion zoo dua.Tsis tas li ntawd, lwm yam khoom xws li npib tsib xee, molybdenum, thiab nitrogen tuaj yeem ntxiv rau cov hlau los txhim kho nws cov corrosion kuj.
Post lub sij hawm: Feb-15-2023