Video: Puas yog tungsten Ib lub ntsiab lus sib xyaw lossis sib xyaw?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Tungsten yog ib qho hlau tsis tshua muaj nyob hauv ntiaj teb yuav luag tshwj xeeb nrog rau lwm cov khoom hauv tshuaj sib txuas tsis yog ib leeg xwb. Nws raug txheeb xyuas tias yog tus tshiab keeb nyob rau hauv 1781 thiab thawj cais raws li ib tug hlau nyob rau hauv 1783. Nws cov ore tseem ceeb muaj xws li wolframite thiab scheelite.
Ib yam li ntawd, tej zaum koj yuav nug, puas yog tungsten cov khoom ntshiab lossis cov khoom sib xyaw?
Tungsten yog ib yam tshwm sim tshwm sim. Nws tshwm sim hauv pob zeb thiab pob zeb hauv av ua ke nrog lwm cov tshuaj, tab sis tsis yog ib qho dawb huv hlau Elemental tungsten yog xim dawb rau hlau grey hlau (nyob ntawm qhov purity) uas tuaj yeem siv rau hauv dawb huv daim ntawv los yog tov nrog lwm yam hlau los ua alloys.
yog tungsten magnetic? Tungsten hlau nplaum. Tungsten yog ferromagnetic lub ntsiab lus tseem ceeb nws yog lawm Sib nqus.
Ntxiv mus, dab tsi yog ua los ntawm tungsten?
Lub glowing filament ntawm incandescent teeb qhov muag teev yog ua ntawm ntshiab tungsten . Tungsten Nws tseem yog nyob rau hauv lub starter filament ntawm fluorescent qhov muag teev thiab filaments ntawm cathode ray hlab. Ntshiab tungsten kuj yog ua nyob rau hauv cov khoom cua kub rau hluav taws xob furnaces siv nyob rau hauv smelting nroj tsuag thiab foundries.
Dab tsi yog tungsten sib raug zoo nrog cov khoom?
Tungsten reacts ncaj qha nrog chlorine, Cl2, ntawm 250 ° C los yog bromine, Br2, ua raws tungsten (VI) chloride, WCl6 los yog tungsten (VI) bromide, WBr6. Raws li kev tswj xyuas kom zoo, tungsten (V) chloride, WCl5, yog tsim nyob rau hauv cov tshuaj tiv thaiv ntawm tungsten hlau thiab chlorine, Cl2.
Pom zoo:
Dab tsi yog 3 lub ntsiab lus tseem ceeb ntawm kev siv lub ntsiab lus?
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