Lub hauv paus ntsiab lus twg txiav txim siab qhov corrosion kuj ntawm stainless hlau kav

Kev tiv thaiv corrosion ntawm stainless hlau kav yog txiav txim siab los ntawm oxide zaj duab xis ntawm lawv qhov chaw. Qhov tsim ntawm no oxide zaj duab xis yog vim cov tshuaj tiv thaiv ntawm chromium thiab oxygen hauv stainless hlau. Thaum cov ntsiab lus chromium nce mus txog ib qho kev faib ua feem (xws li ntau tshaj 10.5%), atmospheric corrosion kuj ntawm hlau yuav nce. Chromium tau yooj yim oxidized thiab tuaj yeem tsim cov duab ntom ntom Cr2O3 oxide rau ntawm cov hlau. Cov oxide zaj duab xis no tuaj yeem tiv thaiv oxidation ntxiv ntawm cov hlau, yog li txhim kho nws cov corrosion kuj.
Tsis tas li ntawd, qhov kev tiv thaiv corrosion ntawm stainless hlau kuj muaj feem xyuam rau lwm yam alloying ntsiab lus nws muaj, uas tuaj yeem hloov hom oxide ntawm cov hlau, ua kom nruj dua cov chromium nplua nuj oxide los tiv thaiv qhov chaw, tiv thaiv oxidation thiab corrosion. . Yog tias cov oxide zaj duab xis no puas lawm, cov hlau tsis muaj steel kuj tuaj yeem tsim cov oxide zaj duab xis tshiab los ntawm kev kho tus kheej, txuas ntxiv muab kev tiv thaiv.
Zuag qhia tag nrho, cov corrosion tsis kam ntawm cov kav hlau stainless hlau feem ntau yog nyob ntawm cov hlau dension olosive thiab tiv thaiv corrosive nruab nrab thiab tiv thaiv corrosive los ntawm kev tshwm sim.