904L Stainless Hlau PhajYog ib hom ntawm Austenitic Stainless hlau nrog cov ntsiab lus carbon tsawg heev thiab muaj alloy alloying tsim rau ib puag ncig cov mob hnyav. Nws tau zoo dua corrosion tsis kam dua li316Lthiab317L, thaum noj mus rau hauv tus account tus nqi, kev ua tau zoo, thiab tus nqi-ua hauj lwm zoo. siab dua. Vim yog qhov ntxiv ntawm 1.5% tooj liab, nws muaj qhov zoo corrosion tsis kam tawm tsam txo cov kua qaub xws li sulfuric acid thiab phosphoric acid. Nws tseem muaj kev tiv thaiv corrosion zoo heev tiv thaiv kev ntxhov siab ntawm chlosion los ntawm chloride ions, thiab muaj kev tsis zoo rau intergranular corrosion. Hauv cov sulfuric acid hauv cov ntsiab lus ntawm 0-98%, qhov kev pabcuam kub ntawm 904L phaj tuaj yeem yog li 40 degrees Celsius. Nyob rau hauv ntshiab phosphoric acid nyob rau hauv cov concentration ntau yam ntawm 0-85%, nws corrosion tsis kam yog qhov zoo heev. Hauv kev lag luam phosphoric acid tsim los ntawm cov txheej txheem ntub dej, impurities muaj qhov cuam tshuam muaj zog rau corrosion tsis kam. Ntawm txhua hom phosphoric acid, 904L Super Austenitic stainless hlau muaj zoo corrosion tsis kam dua li delity stainless hlau. Nyob rau hauv muaj zog oxidizing cov kua qaub, 904L stainless hlau muaj qis corrosion tsis tshua muaj ntau yam sib txawv hlau. tsis pub dhau cov kev xav no. Lub corrosion tsis kam ntawm 904L hlau zoo dua li ntawm cov pa sib txawv. 904L stainless hlau muaj siab tsis kam rau pitting corrosion. Nws txoj kev tawm tsam mus rau cov crevice corrosion hauv chloride daws. Lub zog kuj zoo heev. Lub siab Nickel cov ntsiab lus ntawm904L Hlau Phajtxo tus nqi corrosion hauv pits thiab nqaws. Vim nws cov ntsiab lus nickel siab, 904L muaj lub siab tiv thaiv corrosion hauv nitride daws thiab hydrofed sulfide-nplua nuj ib puag ncig.
Lub Sijhawm Post: Nov-20-2023