Ingxubevange ye-Corrosion Resistant

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Ingxubevange ye-Corrosion Resistant

Izinto eziphambili ze-alloying zibhedu, i-chromium kunye ne-molybdenum. Ineempawu ezilungileyo ezibanzi kwaye iyaxhathisa kwi-corrosion eyahlukeneyo ye-asidi kunye noxinzelelo lwe-corrosion. Isicelo sokuqala (esiveliswe eUnited States ngo-1905) i-nickel-copper (Ni-Cu) i-alloy, eyaziwa ngokuba yi-Monel alloy (i-Monel alloy Ni 70 Cu30); ukongeza, i-nickel-chromium (i-Ni-Cr) i-alloy (oko kukuthi, i-nickel-based heat-resistant alloy) , i-alloys ekwazi ukumelana nobushushu kwi-alloys e-corrosion-resistant), i-nickel-molybdenum (i-Ni-Mo) i-alloys (ikakhulukazi ibhekisela kuchungechunge lwe-Hastelloy B), i-nickel-chromium-molybdenum (i-Ni-Cr-Mo) i-alloys (ikakhulukazi ibhekisela kuchungechunge lwe-Hastelloy C), njl.

Kwangaxeshanye, i-nickel ecocekileyo ikwangummeli oqhelekileyo we-nickel-based corrosion-resistant alloys. Ezi nickel-based alloys-resistant-corrosion-resistant zisetyenziswa ikakhulu ekwenzeni amacandelo eendawo ezahlukeneyo ezikwaziyo ukumelana nomhlwa njengepetroleum, iikhemikhali, kunye namandla ombane.

I-nickel-based based corrosion-resistant alloys ininzi ine-austenite structure. Kwimeko yesisombululo esiqinileyo kunye nokuguga, kukho izigaba ze-intermetallic kunye ne-carbonitrides yensimbi kwi-matrix ye-austenite kunye nemida yeenkozo ze-alloy. Ii-alloys ezahlukeneyo ezinganyangekiyo ku-corrosion zihlelwa ngokwamacandelo azo kwaye iimpawu zazo zimi ngolu hlobo lulandelayo:

Ukuxhatshazwa kwe-corrosion ye-Ni-Cu alloy ingcono kune-nickel ekunciphiseni okuphakathi, kwaye ukuxhathisa kwayo kwe-corrosion kungcono kunokobhedu kwi-oxidizing medium. Eyona imathiriyeli yeeasidi (jonga iMetal Corrosion).

I-Ni-Cr alloy ikwayi-nickel-based based heat-resistant alloy; isetyenziswa ikakhulu kwiimeko oxidizing medium. Iyakwazi ukumelana ne-oxidation yobushushu obuphezulu kunye ne-corrosion yeegesi ezinesulfure kunye ne-vanadium, kwaye ukuxhathisa kwayo kwe-corrosion kuyanda ngokunyuka komxholo we-chromium. Ezi alloys nazo zinokuchasana okulungileyo kwi-hydroxide (efana ne-NaOH, KOH) i-corrosion kunye noxinzelelo lwe-corrosion resistance.

Ii-alloys ze-Ni-Mo zisetyenziswa kakhulu phantsi kweemeko zokunciphisa ukubola okuphakathi. Ngomnye we-alloys engcono kakhulu yokumelana ne-corrosion kwi-hydrochloric acid, kodwa phambi kwe-oksijini kunye ne-oxidants, ukuxhathisa kwe-corrosion kunciphisa kakhulu.

I-alloy ye-Ni-Cr-Mo (W) ineempawu ze-alloy ye-Ni-Cr ekhankanywe ngasentla kunye ne-Ni-Mo alloy. Ikakhulu isetyenziswe phantsi kwemeko ye-oxidation-reduction medium medium. I-alloys enjalo inokumelana ne-corrosion efanelekileyo kwiqondo lokushisa eliphezulu le-hydrogen fluoride, kwi-hydrochloric acid kunye ne-hydrofluoric acid solutions equkethe i-oksijini kunye ne-oxidants, kunye negesi ye-chlorine emanzi kwindawo yokushisa. Ingxubevange ye-Ni-Cr-Mo-Cu inamandla okuxhathisa zombini i-nitric acid kunye ne-sulfuric acid corrosion, kwaye inokumelana nokubola okuhle kwezinye iiasidi ezixubeneyo ezinciphisa i-oxidative.