Hoobkas Nqe Muag Niobium Powder nrog Nb thiab CAS No 7440-03-1 High-Entropy Alloys (HEA)

superalloy

Ib feem loj ntawm lub ntiaj teb no niobium yog siv nyob rau hauv zus tau tej cov npib tsib xee, chromium thiab hlau-raws li superalloys nyob rau hauv ntshiab metallic daim ntawv los yog nyob rau hauv daim ntawv ntawm siab purity ferric niobium thiab niobium nickel alloys. Cov alloys no yog siv rau hauv lub dav hlau tshuab, roj turbine xyaw, foob pob ua ntxaij Cheebtsam, turbochargers thiab cov khoom siv hluav taws xob tiv thaiv hluav taws xob. Niobium yuav tsim y theem hauv cov qauv nplej ntawm superalloy. Cov alloys feem ntau muaj txog li 6.5% niobium. Incone1718 alloy yog ib qho ntawm niobium-nickel raws li alloys, cov ntsiab lus ntawm txhua lub ntsiab lus yog: npib tsib xee 50%, chromium 18.6%, hlau 18.5%, niobium 5%, qhov tseem ceeb 3.1%, titanium 0.9% thiab txhuas 0.4%. Cov ntawv thov suav nrog raws li cov khoom siv high-end airframe, xws li tau siv hauv Project Gemini.

Niobium puag alloy

C-103 yog niobium alloy uas muaj 89% niobium, 10% hafnium thiab 1% titanium, uas tuaj yeem siv rau hauv cov kua foob pob hluav taws propulsion nozzles, xws li lub cav tseem ceeb ntawm Apollo lunar module. Cov kev pabcuam Apollo siv cov nyiaj sib txawv. Txij li thaum niobium pib oxidize saum toj no 400 ° C, txhawm rau tiv thaiv nws los ntawm nkig, yuav tsum tau siv cov txheej tiv thaiv rau nws qhov chaw.

Niobium kuj tseem ua lub luag haujlwm tseem ceeb hauv kev kho mob phais, nws tuaj yeem tsis tsuas yog siv los tsim cov cuab yeej kho mob, tab sis kuj yog "cov khoom siv roj ntsha" zoo, vim tias nws muaj kev tiv thaiv corrosion zoo heev, yuav tsis cuam tshuam nrog ntau yam kua hauv tib neeg lub cev. , thiab yuav luag tag tsis ua rau cov nqaij mos hauv lub cev, rau txhua txoj kev ua kom tsis muaj menyuam tuaj yeem hloov mus rau. Yog li nws tuaj yeem khi rau cov ntaub so ntswg ntev ntev thiab nyob twj ywm tsis muaj mob hauv lub cev.