Kaw ntawm chav tsev kub, txias, ventilated thiab qhuav.
txheej txheem hluavtaws
Hydrofluoric acid precipitation nqus lub cev qhuav dej txoj kev. Cov hydrofluoric acid ntau dhau yog ntxiv rau erbium chloride lossis erbium nitrate, thiab nws cov tshuaj aqueous yog evaporated, concentrated, txias, thiab crystallized rau hauv dej da dej kom tau hydrate ntawm erbium trifluoride. Tom qab ntawd kub hauv lub tshuab nqus tsev kom tshem tawm cov dej crystalline.
Qhov concentration ntawm hydrofluoric acid feem ntau yog nyob nruab nrab ntawm 40% thiab 48%, thiab nws noj yog 110% mus rau 120% ntawm qhov theoretical npaum li cas. Lub precipitate ntawm erbium fluoride precipitated los ntawm aqueous tov yuav tsum tau ntxuav kom huv si nrog dej, siv txoj kev pouring. Cov dej lim dej tau qhuav ntawm 100-150 degree kom tshem tawm cov dej adsorbed. Tau txais cov tshuaj fluoride uas muaj cov dej crystalline nkaus xwb. Txhawm rau kom tsis txhob kub siab hydrolysis thaum lub caij lub cev qhuav dej thiab tsim cov fluorine oxide ErOF, cov txheej txheem lub cev qhuav dej yuav tsum tau ua kom sov hauv lub tshuab nqus tsev. Lub tshuab nqus tsev kawm ntawv yuav tsum siab tshaj 0.133Pa, thiab lub cev qhuav dej kub yuav tsum tsis txhob qis dua 300 degree.
Lwm txoj kev ua kom lub cev qhuav dej yog tso hydrated erbium fluoride rau hauv cov roj hydrogen fluoride qhuav rau lub cev qhuav dej, nrog rau qhov kawg ntawm lub cev qhuav dej ntawm 600-650 degree . Vim qhov tseeb tias hydrofluoric acid nag lossis daus yog ua nyob rau hauv cov kev daws teeb meem, cov yas ntim cov tshuaj tiv thaiv feem ntau yog siv, thiab cov khoom siv lub cev qhuav dej yuav tsum tau ua los ntawm cov ntaub ntawv kub-resistant corrosion-resistant, feem ntau yog npib tsib xee raws alloy cov ntaub ntawv.