
Nickel-raws li corrosion-resistant alloys yog ib chav kawm ntawm cov khoom siv hlau siab tshaj plaws uas tau tsim ua feem ntau los tiv thaiv qhov chaw corrosive. Lawv lub hauv paus yog npib tsib xee (Ni) matrix, uas yog inherently resistant rau ntau corrosives, alloyed nrog rau lwm yam tseem ceeb ntsiab - feem ntau chromium (Cr), molybdenum (Mo), thiab tej zaum tooj liab (Cu) thiab nitrogen (N) - los tsim ib tug ntau yam thiab muaj zog tsev neeg ntawm cov ntaub ntawv rau feem ntau aggression tshuaj thiab muaj kev siv.
Lawv yog cov mus-rau kev daws teeb meem thaum stainless hlau tsis txaus.
Exceptional Corrosion Resistance: Qhov no yog lawv cov cuab yeej txhais. Lawv muaj kev tiv thaiv zoo rau ntau yam corrosives, suav nrog:
Acids: sulfuric acid, hydrochloric acid, phosphoric acid.
Caustics: Muaj zog alkaline daws.
Chloride-Induced Attacks: Pitting thiab crevice corrosion, uas yog thawj hom tsis ua haujlwm rau cov qauv stainless hlau.
Stress Corrosion Cracking (SCC): Kev tiv thaiv siab heev rau kev tawg raws li kev sib xyaw ua ke ntawm tensile kev ntxhov siab thiab ib puag ncig corrosive.
Versatility: Ntau yam ntawm cov khoom sib xyaw ua ke tso cai rau kev txiav cov khoom siv rau lub hom phiaj tshwj xeeb corrosive (piv txwv li, siab Mo rau chloride tsis kam, siab Cr rau oxidizing ib puag ncig).
Kev Ua Haujlwm Kub Kub Zoo: Ntau yam ntawm cov hlau no ua kom ruaj khov, tiv thaiv oxide nplai (raws li Cr₂O₃), ua rau lawv tiv taus oxidation thiab carburization ntawm qhov kub siab.
Cov Cuab Yeej Zoo Tshaj Plaws: Lawv tuav lub zog zoo thiab ua kom tawv nqaij los ntawm qhov kub thiab txias mus txog qhov kub thiab txias.
Nickel-based corrosion-resistant alloys tuaj yeem muab faib ua ob peb tsev neeg loj, txhua qhov ua kom zoo rau cov kev sib tw sib txawv.
| Alloy Tsev Neeg | Ntsiab Alloying Elements | Iconic Piv txwv | Primary Corrosion Resistance & Applications |
| Nickel-Chromium | Nia, Cr | Alloy 600 | Oxidation tsis kam ntawm qhov kub thiab txias; caustic ib puag ncig. |
| Nickel-Chromium-Iron | Ni, Cr, Fe | Alloy 800/800H | Kub-kub oxidation thiab carburization kuj; Cov khoom siv kho cua sov. |
| Nickel-Chromium-Molybdenum | Ni, Cr, Mo | C-276, C-22, C-2000 | Tsev neeg ntau yam. Superior tsis kam rau pitting, crevice corrosion, thiab ntau yam acids thiab chlorides. Siv rau hauv kev ua tshuaj, flue gas desulfurization, thiab tswj cov pa phem. |
| Nickel-Chromium-Molybdenum nrog tooj liab | Ni, Cr, Mo, Cu | Alloy 400, hlau 825 | Kev tiv thaiv zoo heev rau sulfuric thiab phosphoric acids; dav siv nyob rau hauv marine thiab tshuaj ua daim ntaub ntawv. |
| Nickel-Molybdenum | Ni, Mo | Alloy B-2, B-3 | Exceptional tiv thaiv kom tsis txhob muaj ib puag ncig (non-oxidizing acids) zoo li hydrochloric acid. |
| Nickel-Chromium-Molybdenum nrog Nitrogen | Ni, Cr, Mo, N | Hlau 625, Alloy 718 | Ua ke lub zog siab (los ntawm nag lossis daus hardening) nrog zoo corrosion thiab oxidation kuj. Siv dav hauv aerospace, chemical, thiab marine engineering. |