Qhov twg siv tungsten?
Qhov twg siv tungsten?

Video: Qhov twg siv tungsten?

Video: Qhov twg siv tungsten?
Video: Qhia siv xov tooj saib tus hlub seb nws nyob qhov twg thiab mus qhov twg 2024, Kaum ib hlis
Anonim

Tam sim no siv yog li electrodes, cua sov ntsiab thiab teb emitters, thiab raws li filaments nyob rau hauv lub teeb qhov muag teev thiab cathode ray tubes. Tungsten feem ntau yog siv nyob rau hauv hnyav hlau alloys xws li kev kub ceev steel, los ntawm cov cuab yeej txiav yog tsim. Nws kuj yog siv nyob rau hauv lub thiaj li hu ua 'superalloys' los tsim hnav-resistant coatings.

Kuj nug, tungsten nyob qhov twg?

Tungsten yog pom hauv qee cov zaub mov suav nrog wolframite ((Fe, Mn) WO4) thiab scheelite (CaWO4). Feem ntau ntawm lub ntiaj teb tungsten , txog 75%, los ntawm Tuam Tshoj. Lwm yam loj deposits ntawm tungsten ua tau pom Hauv California, Colorado, Kaus Lim Qab Teb, Bolivia, Russia thiab Portugal.

Tsis tas li ntawd, qhov twg yog lub ntsiab tungsten thawj pom? Carl Wilhelm Scheele

Tsis tas li ntawd, cov khoom twg muaj tungsten?

Alloys xws li high-speed steel, cristite, thiab stellite, siv nyob rau hauv high-ceev cov cuab yeej, muaj tungsten . Lwm yam tseem ceeb tungsten Cov tebchaw yog calcium thiab magnesium tungstates, uas yog siv nyob rau hauv fluorescent teeb, thiab tungsten disulfide, uas yog siv ua lub roj nplua nyeem kub ntawm qhov kub txog 500 deg C.

Puas yog tungsten siv hauv hluav taws xob?

Tungsten muaj lub siab melting point thiab tsawg vapor siab, yog li nws yog siv nyob rau hauv ntau daim ntawv thov kub, xws li lub teeb qhov muag teev, cathode-ray raj thiab lub tshuab nqus tsev filaments. Tungsten cov kam rau siab rau khaus kub kuj ua rau nws zoo tagnrho cov ntaub ntawv nyob rau hauv hluav taws xob.

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