Tshaj tawm rau 2018-08-15Zinc aluminium txheej yog tsim los ntawm flake zinc hmoov, txhuas hmoov, inorganic acids thiab binder, txheej kua yog coated rau saum npoo tiv thaiv txheej, ib tug tshiab qauv thiab cov khoom tom qab sintering tsim, nws lus Askiv hu ua "dacromet".Raws li cov thev naus laus zis tshiab uas ua tiav qee qhov kev kho mob ib txwm siv hlau, txij li nws tau qhia rau Tuam Tshoj hauv xyoo 1993, zinc-aluminium txheej tshuab muaj ntau yam zoo hauv cov txheej txheem siab corrosion, nyias txheej thiab cov khoom siv huv huv.Nws yog dav siv hauv tsheb, kev tsim kho, kev thauj mus los, hluav taws xob, kev sib txuas lus, khoom siv hauv tsev thiab lwm yam lag luam.
Anti xeb mechanism ntawm zinc aluminium txheej
1. Barrier effect: vim yog qhov sib tshooj ntawm lamellar zinc thiab txhuas, qhov nruab nrab corrosion, xws li dej thiab oxygen, tiv thaiv kom tsis txhob ncav cuag lub substrate thiab tuaj yeem ua raws li cov ntaub thaiv npog.
2. Passivation: nyob rau hauv cov txheej txheem ntawm zinc txhuas txheej, cov inorganic acid tiv thaiv cov zinc, txhuas hmoov thiab hauv paus hlau los tsim ib tug compact passive zaj duab xis, uas muaj zoo corrosion kuj.
3. Cathodic tiv thaiv: lub ntsiab tiv thaiv muaj nuj nqi ntawm zinc, txhuas thiab chromium txheej yog tib yam li zinc txheej, uas yog cathodic tiv thaiv substrate.
Post lub sij hawm: Jan-13-2022