Nickel siv thiab siv
Qhia
Nws yog ib qho ntawm cov tshuaj lom neeg. Nws lub npe Askiv yog Nickel, nws cov cim tshuaj yog Ni, nws tus lej atomic yog 28, thiab nws cov txheeb ze atomic loj yog 58.69. Nws belongs rau pawg VIII subgroup thiab lub caij plaub lub caij, thiab tseem yog ib qho kev hloov pauv hlau. Nickel hlau muaj qhov ntom ntom ntawm 8.902 g / cm3, melting point ntawm 1453 degree, thiab boiling point ntawm 2732 degree. Nws yog ze li nyiaj-dawb, tawv, ductile thiab ferromagnetic hlau. Nws feem ntau yog siv los ua cov hlau nplaum sib nqus thiab cov duab nco alloys.
Nickel yog cov hlau dawb-dawb uas nyuaj heev thiab refractory. Nws melting point yog siab li 1455, uas yog siab tshaj kub. Nickel tsis yooj yim oxidized hauv huab cua, muaj cov tshuaj lom neeg ruaj khov, thiab tsuas yog yooj yim soluble hauv nitric acid. Kev ua tau zoo ntawm nickel tshaj qhov tooj liab hauv ntau yam. Txawm li cas los xij, coj txawv txawv, lub ntsiab lus tseem ceeb ntawm nickel hauv Greek yog "tsis siv tau tooj liab". Qhov no yog tej zaum vim hais tias cov nickel pib refined yog impure thiab muaj ntau impurities.
Nickel muaj plasticity zoo, corrosion kuj thiab sib nqus zog, yog li nws yog tsuas yog siv nyob rau hauv cov teb xws li hlau, npib tsib xee-based alloys, electroplating thiab roj teeb. Nws yog dav siv nyob rau hauv ntau yam tub rog manufacturing industries xws li aircraft thiab radar, civil machinery manufacturing thiab Electroplating kev lag luam, thiab lwm yam.
Daim ntawv thov
Nickel plays lub luag haujlwm tseem ceeb hauv kev lag luam hluav taws xob, tshwj xeeb hauv kev tsim cov roj teeb thiab cov khoom siv hluav taws xob. Nickel's gallium nitride conductivity thiab tshuaj lom neeg ruaj khov ua rau nws yog qhov kev xaiv zoo tshaj plaws rau cov khoom siv roj teeb, xws li cov roj teeb nickel-hlau hydride thiab nickel-nickel roj teeb. Tsis tas li ntawd, npib tsib xee kuj tseem siv rau hauv kev tsim cov khoom siv hluav taws xob, cov khoom sib txuas thiab cov xov hlau.
Aerospace kev lag luam:
Nyob rau hauv aerospace teb, npib tsib xee alloys yog dav siv los tsim cov khoom uas muaj kub thiab siab zog, xws li turbine xyaw rau turbine xyaw thiab combustion chambers rau turbine xyaw. Nickel alloys 'kev tiv thaiv corrosion thiab kub kub ruaj khov ua rau lawv yog ib feem tseem ceeb ntawm kev lag luam aerospace. Cov khoom siv zoo tagnrho rau cov khoom tseem ceeb no.
Kev lag luam tshuaj:
Nickel yog siv los ua catalyst hauv kev lag luam tshuaj, tshwj xeeb tshaj yog nyob rau hauv hydrogenation tshuaj. Nickel catalysts tuaj yeem siv los hloov olefins rau hauv alkanes thiab tuaj yeem siv rau hauv kev tsim cov foams thiab ntau yam kev cuam tshuam hauv kev ua roj av. Ua lub luag haujlwm tseem ceeb hauv cov organic synthesis thiab kev rov ua dua tshiab.
Ua los ntawm stainless hlau:
Nickel alloy plays lub luag haujlwm tseem ceeb hauv stainless hlau, txhim kho nws cov corrosion kuj. Cov hlau tsis muaj steel muaj li ntawm 8-10% npib tsib xee, uas muab cov khoom zoo heev ntawm corrosion kuj, kub tsis kam thiab lub zog. Cov hlau tsis zoo no yog siv dav hauv cov khoom siv hauv chav ua noj, cov thawv ntim tshuaj, lub tsev thiab lwm yam kev lag luam.
Electroplating kev lag luam:
Electroplating ntawm npib tsib xee yog dav ntsuas rau kev tiv thaiv thiab kev txhim kho ntawm cov khoom siv hlau. Los ntawm cov txheej txheem siab heev, npib tsib xee plating yog tso rau ntawm qhov chaw ntawm lub substrate los tsim ib qho ntxiv, ci npib tsib xee plating txheej uas txhim kho corrosion kuj, hardness thiab tsos ntawm cov hlau.
Tsheb tsim:
Nickel alloys kuj ua lub luag haujlwm tseem ceeb hauv kev tsim tsheb. Nickel yog siv nyob rau hauv lub cav Cheebtsam, tso pa system thiab roj teeb, raws li zoo raws li nyob rau hauv roj teeb technology rau hluav taws xob tsheb, xws li lithium nickel manganese cobalt oxide roj teeb.
Feem ntau, nickel hlau yog siv nyob rau hauv ntau lub teb xws li electronics, aerospace, tshuaj kev lag luam, stainless hlau manufacturing, electroplating thiab tsheb tsim vim nws zoo heev lub cev thiab tshuaj.
