Daim ntawv thov ntawm Rare Earcter Praseodymium (PR).

PreaseodyMium (PR) txog 160 xyoo dhau los, Swedish Mosander nrhiav tau lub caij tshiab los ntawm Lanthhan, tab sis nws tsis yog ib qho khoom. Mauxerand pom tias qhov xwm ntawm lub ntsiab lus no yog qhov zoo heev rau kev hais lus, thiab npe nws "Pr-ND". "Preaseymium thiab neodymium" txhais tau tias "menyuam ntxaib" hauv Greek. Txog 40 xyoo tom qab, uas yog, xyoo 1885, thaum lub chav teeb tau muab ob lub npe ntawm "preodymium", ib qho npe "neodymium" thiab lwm lub npe "preaseymium". Qhov no hom ntawm "ntxaib" yog sib cais, thiab lub praseodymium lub caij muaj nws tus kheej loj ntiaj teb los tso nws cov txuj ci. PreaseodyMium yog ib lub ntiaj teb tsis tshua muaj neeg nrog nyiaj ntau, uas siv hauv iav, ceramics thiab cov khoom sib nqus.

Preasodymium (PR)

Praseodymium daj (rau glaze) atomic liab (rau ci).

Pr-nd alloy

Tus lej xide prase

Neodymium neodymium fluoride

Qhov kev thov thoob plaws ntawm preaseymium:

(1) PreaseDmium yog dav siv nyob rau hauv tsev ceramics thiab siv ceramics niaj hnub. Nws tuaj yeem sib xyaw nrog cov ci ci ci ua kom muaj xim ci, thiab tseem siv tau ua cov xim undergaze ib leeg. Tus xim ua yog lub teeb daj nrog cov ntshiab thiab muaj kuab heev.

(2) siv rau kev tsim cov hlau nplaum ruaj khov. Xaiv cov pheej yig Preasodymium thiab neodymium hlau es tsis muaj cov pa hlau nplaum txuas ntxiv thiab tuaj yeem ua tiav rau hauv cov hlau nplaum ntawm ntau yam duab. Dav siv nyob rau hauv ntau yam khoom siv hluav taws xob thiab lub cev muaj zog.

(3) rau roj av catalum catalytic cracking. Ntxiv cov enricksed inaseodymium thiab neodymium nyob rau hauv npaj roj av catalyst tuaj yeem txhim kho kev ua haujlwm, xaiv thiab ruaj khov ntawm cov catalyst. Tuam Tshoj pib muab tso rau hauv kev lag luam siv xyoo 1970, thiab nws cov tau noj tau nce ntxiv.

(4) PreaseMacium tseem tuaj yeem siv rau cov muaj kev sib cais polishing. Tsis tas li ntawd, cov muaj yees siv dav hauv thaj teb ntawm cov kho tshiab fiber ntau.