kev taw qhia
Nickel alloy yog ib qho alloy raws nickel nrog rau lwm cov khoom ntxiv. Cov khoom siv hluav taws xob, lub cev, thiab tshuaj lom neeg ntawm nickel yog qhov zoo. Nws cov oxidation tsis kam, corrosion kuj, lub zog ntawm qhov kub thiab txias, thiab qee cov yam ntxwv ntawm lub cev tuaj yeem txhim kho los ntawm kev ntxiv cov khoom xyaw zoo.
classification thiab yam ntxwv
Nickel-raws li alloy yog hais txog ib hom alloy uas muaj lub zog siab thiab qee yam khoom siv xws li oxidation tsis kam thiab corrosion kuj ntawm qhov kub ntawm 650 txog 1000 degree. Raws li cov khoom tseem ceeb, lawv tau muab faib ua npib tsib xee-raws li kub-txias alloys, npib tsib xee-raws li corrosion-resistant alloys, npib tsib xee-raws li hnav-resistant alloys, npib tsib xee-raws li precision alloys thiab npib tsib xee-raws li cov duab nco alloys.
1. Nickel-raws li high-temperature alloy
Cov ntsiab lus tseem ceeb ntawm cov hlau yog chromium, tungsten, molybdenum, cobalt, aluminium, titanium, boron, zirconium, thiab lwm yam. Ntawm lawv, chromium plays lub luag haujlwm antioxidant thiab tiv thaiv corrosion, thiab lwm yam khoom ua lub luag haujlwm ntxiv dag zog. Nws muaj lub zog siab, oxidation tsis kam, thiab roj corrosion kuj ntawm qhov kub ntawm 650 txog 1000 degree. Nws yog tsuas yog siv los tsim cov khoom kub-kub xws li dav hlau cav hniav thiab foob pob ua ntxaij cav, nuclear reactors, thiab cov khoom siv zog hloov dua siab tshiab.
2. Nickel-raws li corrosion-resistant alloy
Lub ntsiab alloying ntsiab yog tooj liab, chromium thiab molybdenum. Nws muaj kev ua haujlwm zoo thiab tiv taus ntau yam acid corrosion thiab kev ntxhov siab corrosion. Daim ntawv thov ntxov tshaj plaws yog npib tsib xee-tooj liab, tseem hu ua Monel alloy; Tsis tas li ntawd, muaj cov nickel-chromium alloy, nickel-molybdenum alloy, nickel-chromium-molybdenum alloy, thiab lwm yam. Siv los tsim ntau yam corrosion-resistant qhov chaw.
3. Nickel-raws li hnav-resistant alloy
Lub ntsiab alloying ntsiab yog chromium, molybdenum, thiab tungsten, thiab kuj muaj me me ntawm niobium, tantalum, thiab indium. Ntxiv nrog rau kev hnav tsis kam, nws kuj muaj qhov zoo tiv thaiv oxidation, corrosion kuj thiab vuam zog. Nws tuaj yeem siv los tsim cov khoom hnav-tiv taus, thiab tseem tuaj yeem siv los ua cov khoom siv cladding kom coated rau ntawm lwm cov ntaub ntawv los ntawm surfacing thiab txau txheej txheem.
4. Nickel-raws li precision alloy
Xws li nickel-raws li mos magnetic alloy, npib tsib xee-raws li precision kuj alloy thiab npib tsib xee-raws li electrothermal alloy, thiab lwm yam. Feem ntau siv mos magnetic alloy yog permalloy, uas muaj li ntawm 80% npib tsib xee. Lawv muaj siab tshaj plaws thiab pib permeabilities thiab qis coercivity. Lawv yog cov khoom tseem ceeb hauv kev lag luam hluav taws xob. Lub ntsiab alloying ntsiab ntawm nickel-raws li precision kuj alloy yog chromium, txhuas thiab tooj liab. Lub alloy muaj siab resistivity, tsis tshua muaj kub coefficient ntawm resistivity, thiab zoo corrosion kuj, thiab yog siv los ua resistors. Nickel-based hluav taws xob cua sov alloy yog nickel alloy uas muaj 20% chromium. Nws muaj cov khoom zoo tiv thaiv oxidation thiab tiv thaiv corrosion thiab tuaj yeem siv tau ntev ntawm qhov kub ntawm 1000-1100 degree .
5. Nickel-raws li zoo li nco alloy
Nickel alloy muaj 50 (ntawm)% titanium. Lub rewarming kub yog 70 degree thiab cov duab cim xeeb zoo. Ib qho kev hloov me me hauv qhov sib piv ntawm npib tsib xee-titanium tuaj yeem hloov pauv qhov kub thiab txias hauv thaj tsam ntawm 30 txog 100 degree. Nws feem ntau yog siv rau hauv kev tsim khoom ntawm tus kheej nthuav dav cov qauv siv nyob rau hauv lub dav hlau, nws tus kheej lub zog fasteners siv nyob rau hauv kev lag luam aerospace, thiab dag lub plawv motors siv nyob rau hauv biomedicine.
daim ntawv thov
Kev txhim kho qib ntawm cov nickel-raws li alloy kev lag luam yog qhia ib tug ruaj khov upward trend. Nrog rau txoj kev loj hlob ntawm kev lag luam, nickel-raws li alloys nrog sib txawv compositions thiab cov khoom tau dav siv. Cov chaw siv tseem ceeb yog:
1. Dej hiav txwv:Marine vaj tse, seawater desalination, seawater aquaculture, seawater heat exchange, thiab lwm yam nyob rau hauv marine ib puag ncig.
2. Kev tiv thaiv ib puag ncig:thermal zog tsim flue roj desulfurization khoom, kho dej khib nyiab, thiab lwm yam.
3. Lub zog teb:nuclear fais fab, kev siv thee, kev tsim hluav taws xob tidal, thiab lwm yam.
4. Petrochemical kev lag luam:roj refining, tshuaj lom neeg kev lag luam thiab chemical khoom, thiab lwm yam.
5. Zaub mov teb:ntsev ntau lawm, soy sauce brewing, thiab lwm yam.