Nickel-based Alloy Applied nrog Passivation
Cov hom Nickel Alloys
Nickel yuav alloy yooj yim nrog ntau cov hlau xws li tooj liab, chromium, hlau, thiab molybdenum.Qhov sib ntxiv ntawm cov npib tsib xee rau lwm cov hlau hloov cov khoom ntawm cov txiaj ntsig alloy thiab tuaj yeem siv los tsim cov yam ntxwv uas xav tau xws li txhim kho corrosion lossis oxidation tsis kam, ua haujlwm kub kub, lossis qis coefficients ntawm thermal expansion, piv txwv li.
Cov ntu hauv qab no nthuav qhia cov ntaub ntawv hais txog txhua yam ntawm cov nickel alloys.
Nickel- Hlau Alloys
Nickel-hlau alloys ua haujlwm hauv cov ntawv thov uas xav tau cov cuab yeej yog qhov qis ntawm thermal expansion.Invar 36®, kuj muag nrog cov npe lag luam ntawm Nilo 6® lossis Pernifer 6®, nthuav tawm cov coefficient ntawm thermal expansion uas yog li ntawm 1/10 ntawm cov hlau.Qhov siab ntawm qhov ntev ntawm qhov ruaj khov no ua rau cov nickel-hlau alloys muaj txiaj ntsig zoo hauv cov ntawv thov xws li cov cuab yeej ntsuas ntsuas lossis ntsuas ntsuas kub.Lwm cov nickel-hlau alloys nrog ntau dua cov nickel yog siv rau hauv cov ntawv thov uas cov khoom sib nqus yog qhov tseem ceeb, xws li transformers, inductors, lossis cov khoom siv nco.
Nickel-Copper Alloys
Nickel-tooj liab alloys yog heev tiv taus corrosion los ntawm dej ntsev los yog dej hiav txwv thiab yog li pom daim ntawv thov nyob rau hauv marine daim ntaub ntawv.Ua piv txwv, Monel 400®, kuj tau muag hauv cov npe lag luam Nickelvac® 400 lossis Nicorros® 400, tuaj yeem nrhiav tau daim ntawv thov hauv marine piping systems, twj tso kua mis shafts, thiab seawater li qub.Qhov no alloy raws li qhov tsawg kawg nkaus concentration ntawm 63% nickel thiab 28-34% tooj liab.
Nickel-Molybdenum Alloys
Nickel-molybdenum alloys muaj tshuaj lom neeg muaj zog rau cov kua qaub thiab lwm yam khoom siv xws li hydrochloric acid, hydrogen chloride, sulfuric acid, thiab phosphoric acid.Cov tshuaj pleev xim rau ib qho alloy ntawm hom no, xws li Alloy B-2®, muaj cov ntsiab lus ntawm molybdenum ntawm 29-30% thiab nickel concentration ntawm 66-74%.Cov ntawv thov suav nrog cov twj tso kua mis thiab cov li qub, gaskets, cov hlab ntsha siab, cov khoom siv hluav taws xob, thiab cov kav dej.
Nickel-Chromium alloys
Nickel-chromium alloys yog khoom plig rau lawv cov kev tiv thaiv corrosion siab, siab kub lub zog, thiab hluav taws xob tsis kam.Piv txwv li, cov alloy NiCr 70/30, kuj raug xaiv raws li Ni70Cr30, Nikrothal 70, Resistohm 70, thiab X30H70 muaj ib tug melting point ntawm 1380oC thiab ib tug hluav taws xob resistivity ntawm 1.18 μΩ-m.Cov khoom cua sov xws li hauv cov toasters thiab lwm yam hluav taws xob tiv thaiv cua sov siv cov nickel-chromium alloys.Thaum tsim nyob rau hauv daim ntawv hlau lawv hu ua Nichrome® hlau.
