Hobaneng ha li-alloys tse thehiloeng ho Nickel?

Li-alloys tse thehiloeng ho Nickel

Li-alloys tse thehiloeng ho Nickel le tsona li bitsoa li-superalloys tse thehiloeng ho ni ka lebaka la matla a tsona a ikhethang, ho hanyetsa mocheso le ho hanela ts'enyeho. Sebopeho sa kristale se shebaneng le sefahleho ke karolo e ikhethang ea li-alloys tse nang le li-ni ho tloha ha nickel e sebetsa e le botsitso bakeng sa austenite.

Lik'hemik'hale tse ling tse tloaelehileng tsa lik'hemik'hale ho li-alloys tse nang le nickel ke chromium, cobalt, molybdenum, iron le tungsten.

Inconel® le Hastelloy® Nickel-based Alloys

Malapa a mabeli a li-alloys a thehiloeng ho fetisisa a nang le nickel ke Inconel® le Hastelloy®. Bahlahisi ba bang ba tsebahalang ke Waspaloy®, Allvac® le General Electric®.

Li-alloys tse tloahelehileng haholo tse thehiloeng ho nickel ke tsena:

• Inconel® 600, 2.4816 (72% Ni, 14-17% Cr, 6-10% Fe, 1% Mn, 0.5% Cu): Nickel-chrome-iron alloy e bonts'ang botsitso bo botle boemong bo pharalletseng ba mocheso. Tsitsitseng khahlanong le chlorine le metsi a chlorine.
• Inconel® 617, 2.4663 (Nickel balance, 20-23% Cr, 2% Fe, 10-13% Co, 8-10% Mo, 1.5% Al, 0.7% Mn, 0.7% Si): Motsoako ona o entsoe haholo ka nickel , chrome, cobalt le molybdenum li bonts'a matla a phahameng le ho hanyetsa mocheso.
• Inconel® 718 2.4668 (50-55% Ni, 17-21% Cr, Iron balance, 4.75-5.5% Nb, 2.8-3.3% Mo, 1% Co,): Sebaka se thata sa nickel-chrome-iron-molybdenum alloy e tsebahala ka ho sebetsa hantle le ho etsa mechini e metle maemong a batang haholo.

Li-alloys tse thehiloeng ho nickel tsa Hastelloy® li tsejoa ka ho hanela li-acid. Tse tloaelehileng haholo ke tsena:

• Hastelloy® C-4, 2.4610 (Tekanyo ea Nickel, 14.5 - 17.5% Cr, 0 - 2% Co, 14 - 17% Mo, 0 - 3% Fe, 0 - 1% Mn): C-4 ke nickel- chrome-molybdenum alloy e sebelisoang libakeng tse nang le li-acid tse sa tloaelehang.
• Hastelloy® C-22, 2.4602 (Tekanyo ea Nickel, 20 -22.5% Cr, 0 - 2.5% Co, 12.5 - 14.5% Mo, 0 - 3% Fe, 0-0.5% Mn, 2.5 -3.5 W): C- 22 ke motsoako o sa sebetseng oa ts'enyeho-chrome-molybdenum-tungsten o bonts'ang phehello e ntle khahlano le liasiti.
• Hastelloy® C-2000, 2.4675 (Tekanyo ea Nickel, 23% Cr, 2% Co, 16% Mo, 3% Fe): C-2000 e sebelisoa libakeng tse nang le li-oxidants tse mabifi, joalo ka sulfuric acid le ferric chloride.

♦ Ho ntlafatsa ho tšoarella ha likarolo tsa mosebetsi tse thehiloeng ho nikele

Li-alloys tse nang le Nickel li tsejoa ka thepa ea tsona e metle e kang ho hanyetsa ts'enyeho le botsitso bo phahameng ba mocheso. Leha ho le joalo, hoo e ka bang ha ho mosebetsi o ka tšoarellang ka ho sa feleng, ho sa tsotelehe hore na thepa e ntle hakae. Ho lelefatsa bolelele ba nako ea likarolo, li-alloys tse thehiloeng ho nickel li ka phekoloa ka BoroCoat®, kalafo ea rona ea ho hasanya ho ntlafatsa haholo ts'enyeho le ho roala le ho fana ka botsitso khahlano le li-oxidants.

Likarolo tsa phallo ea BoroCoat® li ntlafatsa ho thatafala ha metsi ho fihla ho 2600 HV ha li ntse li boloka lera la phallo ea 60 .m. Ho hanyetsa ho tsofala ho ntlafalitsoe haholo, joalo ka ha ho netefalitsoe ke pini tekong ea disc. Ha botebo ba ho roala li-alloys tse sa sebetsanoeng le nikele bo eketsa nako e telele ha pini e potoloha, li-alloys tse thehiloeng ho ni le BoroCoat® li bonts'a botebo bo tlase ba ho roala nakong eohle ea teko.

♦ Libaka tsa Kopo

Lisebelisoa tse nang le nickel li atisa ho sebelisoa libakeng tse thata tse hlokang ho hanyetsa hantle khahlanong le mocheso o phahameng le o tlaase, oxidation / kutu le matla a phahameng. Ke ka hona lits'ebetso li kenyelletsang empa li sa felle ho: boenjiniere ba turbine, theknoloji ea semela sa motlakase, indasteri ea lik'hemik'hale, boenjineri ba lifofane le li-valve / lisebelisoa.

 Hoo e ka bang 60% ea nickel lefats'eng e qetella e le karolo ea tšepe e sa hloekang. E khethoa ka lebaka la matla a eona, ho tiea ha eona le ho hanyetsa ts'enyeho. Lisebelisoa tse sa hloekang tsa Duplex hangata li na le li-nickel tse ka bang 5%, li-austenitics tse ka bang 10% ea nickel, le li-austenitics tse fetang 20%. Limaraka tse sa keneleng mocheso hangata li na le nickel e fetang 35%. Li-alloys tse thehiloeng ho Nickel ka kakaretso li na le nickel ea 50% kapa ho feta.