Ntshiab nickel: Hais txog kev lag luam muaj cov qhab nia ntawm ob kab npauj npaim (piv txwv li, NI200, NI201) nrog cov ntsiab lus npib tsib caug ntawm 99.6% lossis siab dua. Cov kab kawm tau tsawg tsawg rau cov pa roj carbon tsawg, hlau, tooj liab, manganese, thiab silicon (feem ntau yog tag nrho tsawg dua 0.4%). Cov impurities no tsis yog txhob txwm txuas ntxiv tab sis yog cov khoom lag luam los ntawm kev ua.
Nickel alloys: Cov ntaub ntawv chollic uas cov npe npib uas yog qhov sib xyaw ua ke (cov roj ntsha chromium, tooj liab, molybdenum, titanium, txhuas, lossis cobalt. Piv txwv li:
Monel 400 (lub npib tsib xee-tooj liab) muaj ~ 65% ni thiab ~ 30% Cu.
Inconel 625 (lub npib tsib xee-molybdenum alloy) suav nrog ~ 61% ni, 21% cr, thiab 9% mo.
Ntshiab nickel: Cov khoom ua yeeb yam nruab nrab lub zog (tensile lub zog ntawm ~ 345 mpa hauv anealed daim ntawv) tab sis kev ua haujlwm siab, tso cai yooj yim dua ua haujlwm (piv txwv li, dabtsi yog khoov, yob). Nws lub zog txo qis ntawm cov kub (siab dua 300 ° C / 572 ° F) vim yog cov cua sov.
Nickel alloys: Ua tiav cov khoom siv kho tshuab hluav taws xob los ntawm kev ua alloying:
Lub zog siab dua: Alloys zoo li Inconel 718 (tensile lub zog ~ 1,400 mpa kom muaj zog dua lossis nag lossis daus los ntawm niobium lossis titanium.
Txhim kho qhov kev ua tau kub-kub: Alloys nrog chromium (piv txwv li, inconel 600) kev kub ceev tshaj 1,000 ° F), hereas npib dawb huv tsis muaj zog sai li sai tau raws li cov kev mob no.
Zoo dua creep kuj: Nickel alloys tiv thaiv zuj zus ntawm kev ntxhov siab zuj zus ntawm kev ntxhov siab ntev ntev ntawm kev ntxhov siab ntev, yog ib qho tseem ceeb rau cov khoom lag luam Turbine.
Ntshiab nickel: Muaj qhov zoo tsis kam mus rau qhov tsis-oxidizing ib puag ncig, xws li alkalis hydroxide), dej tshiab, thiab dilute hydrochloric acid ntawm tsawg kub. Txawm li cas los xij, nws yog qhov yooj yim rau oxidizing acids (piv txwv li, nitric acid) thiab cov pa taws uas kub siab.
Nickel alloys: Yog engineered kom tiv thaiv cov kev mob corrosive:
Chromium ntxiv (piv txwv li, inconel 625) txhim kho mus rau oxidation thiab kev kub-roj.
Molybdenum (piv txwv li hastelloy c-276) txhim kho kev ua tau zoo hauv kev txo cov kua qaub (xws li sulfuric acid) thiab chloride ib puag ncig.
Tooj liab (piv txwv li, monel 400) boosts tsis kam mus rau seawater thiab sulfuric acid, outperic acid, outperic acid, outper ob leeg nyob rau hauv cov tub rog lossis chaw muaj teeb meem.
Ntshiab nickel: Oxidizes maj mam ntawm qhov kub siab tshaj 600 ° C (1,112 ° F) thiab nquag mus rau cov pa roj carbon monoxent) thaum yug los ntawm kev siv hluav taws xob txuas ntxiv.
Nickel alloys: Excel nyob rau hauv high-kub stability:
Alloys zoo li hastelloy x tswj cov txheej txheem kev ntseeg ntawm 1,200 ° C (2,192 ° F) Vim tias cov roj chomium thiab hlau ntxiv uas tsim oxide txheej oxide txheej.
Superalloys (piv txwv li, waspaloy) tiv thaiv thermal nkees thiab oxidation, ua rau lawv tsis tseem ceeb hauv JET lub cav ntau.
Ntshiab nickel: Siv hauv cov xwm txheej uas muaj kev coj dawb huv, ductility, lossis hluav taws xob conductivity yog qhov tseem ceeb, xws li:
Cheebtsam Roj teeb (alkaline roj teeb hluav taws xob).
Siv khoom siv tshuaj rau alkalis.
Hluav taws xob txuas thiab cov xov hlau txhuas txhuas.
Nickel alloys: Lub hom phiaj ntawm kev xav tau ib puag ncig uas yuav tsum tau tshwj xeeb cov khoom tshwj xeeb:
Aerospace: turnine yas (inconel 718), tso lub tshuab (haastelloy x).
Tshuaj lom neeg: Reactors (Hastelloy C-276) rau cov kua qaub nruj.
Marine Engineering: Dej hiav txwv kav dej (monel 400).
Lub zog hluav taws xob: Boiler leeg (incoloy 800) rau cov chav kub-kub.
Ntshiab Nickel yog cov khoom siv siab heev rau kev ua kom muaj txiaj ntsig, haum corrosion tsis kam, haum rau kev siv yooj yim, tsawg-ntxhov siab. Nickel alloys, los ntawm kev sib piv, yog engineered nrog kev txhob txwm muaj zog, thiab lub hom phiaj kev siv lub zog zoo nkauj uas muaj hnub nyoog zoo nkauj yuav swb.
