High Purity Nano Fe Hmoov rau High-Entropy Alloys

Kev lag luam siv hlau ua carbon steels muaj ntau heev thiab tshaj ib qho 410 IRONother alloys. Carbon steels yog cov hlau alloys uas muaj cov pa roj carbon ntau sib txawv, feem ntau txog li 1.7% carbon. Lwm cov hlau kuj tau muab tso rau hauv cov pa roj carbon steel los tsim cov hlau tsis tshua muaj hlau. Cov hlau zoo li no feem ntau yog npib tsib xee thiab chromium thiab muab faib ua cov hlau tsis muaj steel, cov cuab yeej hlau, thiab cov hlau tsis muaj cua sov. Cov hlau tsis muaj hlau xws li cam khwb cia hlau, wrought hlau, nickel hlau thiab silicon hlau kuj muaj ntau yam tseem ceeb. Lwm qhov tseem ceeb ntawm kev siv hlau yog raws li kev lag luam catalyst. Nws yog siv nyob rau hauv catalyst compositions nyob rau hauv lub Haber txheej txheem rau synthesis ntawm ammonia, thiab nyob rau hauv Fischer-Tropsch txheej txheem rau ua hluavtaws roj av.Cov nram qab no yog ib co piv txwv ntawm kev siv: tshuaj, tshuaj tua kab, hmoov metallurgy thiab hais txog; Raws li lub tshuab hluav taws xob kub hydrogen, gel propellant, combustion activator, catalyst, dej ntxuav adsorbent, sintered active neeg sawv cev, thiab lwm yam; siv rau hmoov metallurgy khoom, txhua yam ntawm txhua yam khoom thiab cov khoom siv, cemented carbide khoom, thiab lwm yam; raws li ib tug txo tus neeg sawv cev raws li tau zoo raws li siv rau hlau ntsev manufacturing thiab electronics kev lag luam; raws li cov khoom noj khoom haus (hlau fortifier), rau casting, los yog txo tus neeg sawv cev; hauv kev lag luam electronics, hmoov metallurgy. Hlau yog cov ntxhia siv hauv cov khoom noj khoom noj uas tsim nyog rau kev tiv thaiv kab mob ntshav qab zib, uas txo cov hemoglobin concentration thiab yog li cov pa oxygen xa mus rau cov ntaub so ntswg. Cov chaw muaj xws li ferric ammonium sulfate, chloride, fructose, glycerophos-phate, nitrate, phosphate, pyrophosphate thiab ferrous ammonium sulfate, citrate, sulfate, thiab sodium hlau edta. ferric daim ntawv (fe3+) yog hlau nyob rau hauv lub siab tshaj plaws valence xeev thiab ferrous daim ntawv (fe2+) yog hlau nyob rau hauv ib tug qis valence xeev. hlau qhov yuav tsum tsis txhob discolor lossis ntxiv saj thiab yuav tsum ruaj khov. hlau hmoov ua kom tsis muaj xim thiab rancidity. nws yog siv rau fortification nyob rau hauv hmoov, ci khoom, pasta, thiab cereal khoom. Smelting ntawm hlau los ntawm nws cov ore tshwm sim nyob rau hauv lub moj tej tawg rauv qhov twg carbon (coke) thiab limestoneare rhuab nrog cov ore uas ua rau cov hlau nyob rau hauv lub ore raug txo thiab hloov dua siab tshiab tomolten hlau, hu ua "npua hlau." Melted npua hlau tseem muaj qee cov pa roj carbon thiab silicon zoo li lwm yam impurities raws li nws sau rau hauv qab ntawm lub cub tawg nrog molten slag ntab saum cov hlau. Ob leeg yog tapping thiab ntws tawm. Cov txheej txheem no tuaj yeem ua tsis tu ncua vim tias muaj cov khoom xyaw ntxiv tuaj yeem ntxiv raws li cov hlau thiab cov slag raug tshem tawm hauv qab ntawm lub qhov cub.Cov ntawv hlau no tsis muaj txiaj ntsig zoo rau cov khoom tsim khoom, vim tias nws yog nkig thiab tsis muaj zog heev.Ib qho ntawm cov kev txhim kho loj. nyob rau hauv cov cuab yeej ntawm hlau smelting yog kev txhim kho ntawm cov txheej txheem Bessemer los ntawm Henry Bessemer (1813-1898). Nyob rau hauv cov txheej txheem no, compressed cua los yog oxygenis yuam los ntawm molten npua hlau kom oxidize (kub tawm) cov pa roj carbon thiab lwm yam impurities. Steelis ces tsim nyob rau hauv ib tug quab yuam oxygen rauv, qhov twg carbon yog yaj nyob rau hauv cov hlau ntawm hightemperatures. Kev hloov pauv ntawm hardness thiab lwm yam ntxwv ntawm cov hlau tuaj yeem ua tiav nrog kev ntxiv ntawm cov hlau thiab los ntawm kev sib tsoo, quench hardening, thiab tempering steel.Powder metallurgy (sintering) yog cov txheej txheem uas cov hmoov hlau los yog lwm yam hlau sib xyaw ua ke ntawm kev kub siab yam tsis muaj cua sov. haum molded cov ntaub ntawv. Cov txheej txheem no yog siv los tsim homogenous (uniform thoob plaws) hlau qhov chaw.Ib qho ntawm cov yam ntxwv tseem ceeb tshaj plaws ntawm cov hlau yog nws cov hlau nplaum ntuj, uas nws poob ntawm qhov kub thiab txias. Magnetism kuj tuaj yeem nkag mus rau hauv cov khoom hlau los ntawm hluav taws xob induction. Cov hlau nplaum ntawm txhua qhov ntau thiab tsawg thiab cov duab yog siv rau hauv motors, atom smashers, CT scanners, thiab TV thiab computer screens, toname ob peb siv. Cov hlau nplaum super tuaj yeem tsim tau los ntawm kev ntxiv lwm cov ntsiab lus (saib cobalt) kom zoo hlau.Iron yog ib qho tseem ceeb hauv kev tsim cov hemoglobinin cov ntshav, uas nqa oxygen mus rau lub hlwb ntawm peb lub cev. Nws tseem yog ib qho tseem ceeb heev raws li ib tug kab nyob rau hauv cov zaub mov, pab nrog theoxidation ntawm cov zaub mov los tsim lub zog. Peb xav tau li ntawm 10 mus rau 18 milligrams ntawm irone txhua hnub, raws li ib tug kab mob mineral.Iron muaj nyob rau hauv daim siab thiab nqaij cov khoom, qe, shellfish, ntsuab nplooj zaub, taum mog, taum, thiab tag nrho cov cereals. Cov hlau tsis muaj peev xwm ua rau muaj ntshav tsis txaus (cov qe ntshav liab tsawg), qaug zog, qaug zog, mob taub hau, thiab ua pa luv. Cov hlau ntau dhau hauv kev noj zaub mov tuaj yeem ua rau lub siab puas tsuaj, tab sis qhov no yog qhov tsis tshua muaj tshwm sim. Cov hlau ntshiab yog cov khoom siv hauv chav kuaj thiab pom tsis muaj kev lag luam zoo.