Dab tsi yog Lub Ntiaj Teb Tsis tshua muaj?

Lub ntiaj teb tsis tshua muaj yog ib pawg ntawm 17 cov tshuaj lom neeg uas tsis tshua muaj nyob rau hauv cov ntsiab lus ntawm lawv cov nplua nuj nyob rau hauv lub ntiaj teb crust, tab sis raug xa mus rau xws li vim hais tias lawv nyuaj rau extract thiab txheej txheem. Cov ntsiab lus no muaj qhov tshwj xeeb sib nqus, kho qhov muag, thiab hluav taws xob uas ua rau lawv tseem ceeb rau ntau yam kev siv thev naus laus zis, suav nrog smartphones, hluav taws xob tsheb, cua turbines, thiab aerospace technologies.
Muaj 17 lub ntiaj teb tsis tshua muaj, txhua tus muaj nws cov khoom sib txawv. Cov ntsiab lus tsis tshua muaj hauv ntiaj teb muaj xws li cerium, neodymium, lanthanum, praseodymium, thiab yttrium. Cerium yog ib qho ntawm cov khoom siv tsis tshua muaj hauv ntiaj teb, vim nws yog qhov tseem ceeb rau catalytic converters hauv tsheb. Nws kuj tseem siv rau hauv cov iav polishing tebchaw, phosphors hauv cov khoom siv hluav taws xob, thiab hauv cov teeb pom kev zoo carbon arc.
Neodymium yog lwm qhov tseem ceeb hauv ntiaj teb uas tsis tshua muaj siv nyob rau hauv kev tsim cov hlau nplaum ruaj khov hauv cov motors rau lub tsheb fais fab, cua turbines, thiab lwm yam technologies. Lanthanum kuj tseem siv tau rau hauv cov ntawv thov no, tshwj xeeb tshaj yog nyob rau hauv cov roj teeb rechargeable. Nws yog siv nyob rau hauv cov electrodes ntawm nickel-hlau hydride roj teeb, uas feem ntau pom nyob rau hauv hybrid thiab hluav taws xob tsheb.
Praseodymium yog siv rau hauv ntau daim ntawv thov kev siv tshuab siab, nrog rau cov hlau nplaum rau lub tshuab hluav taws xob, lasers, thiab hauv kev lag luam iav. Yttrium yog siv nyob rau hauv ntau daim ntawv thov uas yuav tsum tau ib tug high-kub kuj, xws li ceramics rau missile lub qhov ntswg cones thiab tshav kub-resistant alloys rau aircraft engine.
Lwm yam tsis tshua muaj hauv ntiaj teb muaj xws li europium, gadolinium, samarium, thiab terbium, txhua tus nrog nws cov khoom tshwj xeeb thiab kev siv. Piv txwv li, europium yog siv nyob rau hauv liab phosphors rau xim TV qhia thiab teeb pom kev zoo, thaum gadolinium yog siv nyob rau hauv kev kho mob imaging thiab neutron capture therapy.
Hauv cov ntsiab lus, cov ntsiab lus tsis tshua muaj hauv ntiaj teb yog cov khoom tseem ceeb hauv ntau qhov kev siv tshuab siab. Thaum muaj 17 qhov sib txawv tsis tshua muaj hauv ntiaj teb, feem ntau muaj xws li cerium, neodymium, lanthanum, praseodymium, thiab yttrium. Cov ntsiab lus no muaj cov khoom tshwj xeeb uas ua rau lawv tseem ceeb rau ntau yam kev siv, suav nrog lub tsheb hluav taws xob, cua turbines, thiab kev kho mob imaging technology.