Dab tsi yog tungsten hexafluoride siv rau?

2023-09-04 IB

Dab tsi yog tungsten hexafluoride siv rau?

Tungsten hexafluorideyog cov roj tsis muaj xim, muaj kuab lom thiab corrosive nrog qhov ntom ntom ntawm li 13 g / L, uas yog kwv yees li 11 npaug ntawm qhov ntom ntawm huab cua thiab ib qho ntawm cov roj ntom ntom. Hauv kev lag luam semiconductor, tungsten hexafluoride feem ntau yog siv rau hauv cov txheej txheem tshuaj vapor deposition (CVD) kom tso tungsten hlau. Cov zaj duab xis tso tungsten tuaj yeem siv los ua cov kab sib txuas ntawm cov qhov thiab qhov sib tiv tauj, thiab muaj cov yam ntxwv ntawm qhov tsis kam thiab siab melting point. Tungsten hexafluoride kuj tseem siv rau hauv tshuaj etching, plasma etching thiab lwm yam txheej txheem.

Dab tsi yog qhov densest non-toxic gas?

Qhov ntom ntom uas tsis muaj tshuaj lom yog argon (Ar) nrog qhov ceev ntawm 1.7845 g / L. Argon yog ib qho roj inert, tsis muaj xim thiab tsis muaj ntxhiab, thiab tsis yooj yim ua rau lwm yam khoom. Argon roj yog tsuas yog siv hauv kev tiv thaiv roj, hlau vuam, hlau txiav, laser thiab lwm yam.

Puas yog tungsten muaj zog dua titanium?

Tungsten thiab titanium yog ob qho tib si hlau nrog cov ntsiab lus melting siab thiab lub zog. Lub melting point ntawm tungsten yog 3422 ° C thiab lub zog yog 500 MPa, thaum lub melting point ntawm titanium yog 1668 ° C thiab lub zog yog 434 MPa. Yog li ntawd, tungsten muaj zog dua titanium.

tungsten hexafluoride muaj tshuaj lom npaum li cas?

Tungsten hexafluorideyog cov pa roj uas muaj kuab lom heev uas tuaj yeem ua rau tib neeg lub cev puas tsuaj yog tias nqus tau. LD50 ntawm tungsten hexafluoride yog 5.6 mg / kg, uas yog, nqus tau 5.6 mg ntawm tungsten hexafluoride ib kilogram ntawm lub cev hnyav yuav ua rau 50% kev tuag. Tungsten hexafluoride tuaj yeem ua rau mob ua pa, ua rau cov tsos mob xws li hnoos, mob hauv siab, thiab ua tsis taus pa. Cov mob hnyav tuaj yeem ua rau pulmonary edema, ua pa tsis ua haujlwm thiab txawm tuag.

Puas yuav tungsten xeb?

Tungsten yuav tsis xeb. Tungsten yog cov hlau tsis muaj zog uas tsis hnov mob yooj yim nrog oxygen hauv huab cua. Yog li ntawd, tungsten yuav tsis xeb ntawm qhov kub thiab txias.

Cov kua qaub puas tuaj yeem ua rau tungsten?

Cov kua qaub tuaj yeem corrode tungsten, tab sis ntawm tus nqi qeeb. Cov kua qaub muaj zog xws li cov concentrated sulfuric acid thiab cov concentrated hydrochloric acid tuaj yeem corrode tungsten, tab sis nws yuav siv sij hawm ntev. Cov kua qaub tsis muaj zog xws li dilute sulfuric acid thiab dilute hydrochloric acid muaj qhov tsis muaj zog corrosion ntawm tungsten.

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