Kev siv ntawm Niobium

Qhov ntxov tshaj plaws ntawm kev siv niobium yog ib qho hlau nrog hlau. Txawm hais tias nws muaj ntau lwm yam siv niaj hnub no, qhov no tseem yog thawj daim ntawv thov ntawm lub caij. Kev lag luam kuj feem ntau alloy nws nrog lwm yam hlau, xws li hlau, cobalt, npib tsib xee, zirconium thiab lwm yam hlau uas tsis yog-ferrous. Nws kuj tseem ua lub luag haujlwm tseem ceeb hauv kev tsim cov nickel-based high-temperature alloys thiab high-strength low-alloy steels.

Nws sib tov zoo nrog ntau yam khoom sib txawv, nrog rau cov hlau, thiab yog qhov zoo tshaj plaws yaj hauv kev sib xyaw ntawm hydrofluoric thiab nitric acids.

Ib qho ntawm kev siv niobium hauv stainless hlau yog txhawm rau txhim kho kev ruaj ntseg thaum vuam lossis cua sov, raws li nws tuaj yeem muab ntxiv rau qee cov hlau stainless hauv daim ntawv ferro-niobium. Kev lag luam hluav taws xob feem ntau siv niobium alloys hauv kev tsim cov kav dej vim lawv lub zog. Nws kuj yog siv los txhim kho lub zog nrog rau kev cuam tshuam thiab yaig tsis kam ntawm cemented carbides siv los ua cov cuab yeej txiav thiab cov xovxwm kub.

Cov alloy lub zog, kub tsis kam thiab qhov hnyav hnyav ua rau nws muaj txiaj ntsig zoo rau kev lag luam aerospace. Koj tuaj yeem pom niobium hauv foob pob hluav taws thiab dav hlau tshuab, dav hlau roj turbines thiab lwm yam khoom siv uas yuav tsum muaj cov cua kub zoo heev. Niobium tau siv nyob rau hauv ntau lub tshuab ua haujlwm siab, suav nrog cov siv hauv Gemini qhov kev pab cuam.

Niobium qhov tsis zoo rau kev lag luam aerospace yog nws qhov cuam tshuam rau oxidation. Vim tias qhov tsis zoo no, nws yuav tsum tau plated ua ntej siv hauv ntau daim ntawv thov aerospace.

Raws li tau hais ua ntej, niobium kuj yog ib qho superconductor ntawm qhov kub thiab txias. Vim tias qhov zoo no, nws feem ntau ua lub luag haujlwm tseem ceeb hauv kev tsim cov hlau nplaum superconducting siv hauv kev tshawb fawb tshawb fawb. Nws yog siv nyob rau hauv daim ntawv ntawm niobium-zirconium (Nb-Zr) xov hlau, uas khaws lawv cov superconductivity txawm thaum raug muaj zog magnetic teb. Cov hlau nplaum ua nrog niobium yog siv rau hauv cov reactors tshwj xeeb, MRI scanners, thiab cov khoom siv hluav taws xob sib nqus resonance spectroscopy.

Qee cov kws tshawb fawb ntseeg tias Nb-Zr hlau tuaj yeem muaj ib hnub muaj txiaj ntsig zoo hauv kev tsim hluav taws xob loj. Nws tuaj yeem siv los tsim cov khoom siv hluav taws xob kub uas tsis muaj hluav taws xob tsawg.

Niobium qhov qis capture hla ntu, sib raug zoo nrog uranium, thiab tiv thaiv corrosion los ntawm molten alkali hlau coolants ua rau nws muaj txiaj ntsig zoo rau kev lag luam nuclear. Nws tuaj yeem siv ib leeg lossis ua ib qho alloy nrog zirconium hauv cladding ntawm nuclear reactor cores.