Tungsten ntawv ci - dab tsi yog nws thiab qhov twg yog siv?

Vim nws cov cim thaj chaw ntawm tungsten ntawv ci yog thoob plaws. Nws yog siv nyob rau hauv ntau qhov chaw ntawm lub neej, los ntawm cov tshuaj thiab xaus nrog engineering, nuclear fais fab.

zog

Dua li ntawm qhov me me thickness (ntawm 0.03-0.09 hli), tungsten ntawv ci possesses ceeb cov yam ntxwv:

• Thaum tshav kub kub kuj thiab tshav kub tsis kam. Ntev kev pab cuam lub neej, txawm nyob rau hauv kub txog li 2500 degrees.

• High compression (expansion) ratio.

• Ib tug loj tus nqi ntawm lub fais kuj.

• Heev tsawg thermal expansion coefficient.

• High kub nkag kuj muaj nqis.

• Zog.

• Ib tug siab tau electron emission.

• Nws tsis corrode.

• Resistant rau tshuaj (acids, alkalis, aqua regia).

• Biologically kev nyab xeeb.

• Nws yog tau tso cai rau siv nyob rau hauv corrosive kub tej kev kawm thiab siab loads.

Nrog rau lub ntau yam zoo ntawm cov ntaub ntawv uas kuj muaj nws cov disadvantages:

• Ntshiab tungsten yog ib qhov nyuaj rau tau, vim nws yog heev tsis tshua muaj.

• Lub siab txog lub ntiajteb txawj nqus.

• Thaum uas tsis muaj kub, cov khoom yuav nkig.

• Tungsten - capricious thiab refractory raw cov ntaub ntawv, uas yog ib qhov nyuaj rau ua hauj lwm.

• Qhuav no tau tsuas nyob rau hauv muaj zog cua sov ntawm raw cov ntaub ntawv.

Vim refractoriness, scarcity ntawm raw cov ntaub ntawv, kev cov nyom nyob rau hauv lub chav kawm ntawm nws kev kho mob ntawm tus nqi ntawm tiav lawm cov khoom yog high school.

ntau lawm

Tungsten foils ua los ntawm ntshiab hlau. Cov ntawv yog ua los ntawm nias npaj hnub. Tom qab ntawd, cov hlau yog rhuab thiab forged ntawm ib tug kub ntawm 1500-1700 degrees.

Yuav kom tiv thaiv oxidation siv hlau yog tseem kub dov ntawm kev kub ceev. Thaum daim ntawv thickness nce mus txog 0.6 hli, tus ntxuag ceev yog txo. Feem ntau cov nyias los xij tau los ntawm tus mob khaub thuas dov. Yuav kom tus ntawv ci nto yog tus, siv tus mus dhia-nyob rau hauv.

Yuav kom tshem tawm cov tsuas oxidation thov rhuab sodium tshuaj. Tom qab ntawd, daim ntawv twb calcined nyob rau hauv lub xub ntiag ntawm hydrogen ntawm ib tug kub ntawm 1000 degrees.

kheej ntawm daim ntawv thov

Thov ci tungsten (VA 0.05 hli nrog rau) nyob rau hauv ntau qhov chaw. Lub ntsiab ntawm lawv yog:

• Neeg kho tshuab engineering.

• Aircraft.

• Nuclear lub hwj chim.

• Roj kev lag luam.

• Tshuaj kev lag luam.

• Radiotehnka.

• Hluav taws xob cov engineering.

• Tshuaj.

Tungsten ntawv ci vim nws khoom nws yog siv raws li thaum tshav kub kub shields, ntawm lub ntsiab nws yog los warmers thiab tshav kub pauv khoom.