Tantalum kuj tseem siv tau hauv tshuaj
Tantalum yog ib qho xim xiav, lub teeb-grey hlau nrog ntau yam khoom txawv txawv thiab ntau yam kev siv, hu ua tag nrho-rounder ntawm "hlau lub nceeg vaj".
Tantalum yog ib qho nyuaj thiab nws qhov nyuaj tuaj yeem ncav cuag 6-6.5. Tom qab nws melting point siab li 2996 degree, tungsten thiab rhenium, qhov thib peb. Tantalum yog ductile thiab tuaj yeem kos rau hauv filaments lossis ua los ntawm nyias foils. Nws coefficient ntawm thermal expansion yog me me, thiab nws tsuas expands los ntawm 6.1 labths ntawm ib tug degree Celsius; Tsis tas li ntawd, nws toughness yog zoo dua tooj liab; scrap tantalum
Tsis tas li ntawd, tantalum yog ib qho tseem ceeb ua tiav super steel, corrosion-resistant steel, tshav kub-resistant steel alloying caij, thiab tuaj yeem muab cov ntaub ntawv tshwj xeeb uas xav tau rau kev tsim cov foob pob hluav taws, lub dav hlau, dav hlau dav hlau thiab chaw siv tshuab. Cov hlau tsis sib nqus, tantalum thiab tungsten, yog siv dav hauv kev lag luam hluav taws xob, tshwj xeeb tshaj yog tantalum, tantalum carbide, carbon, nyuaj heev, txawm tias nyob rau hauv siab thiab piv rau pob zeb diamond. Tig nws mus rau hauv high-speed txiav carbide xyaum, ua nrog hloov tau carbide los yog pob zeb diamond. Yog li ntawd, tantalum kuj tseem suav hais tias yog cov vitamin smelting.
Tantalum muaj cov tshuaj tiv thaiv zoo heev thiab siab corrosion kuj. Txhawm rau ua rau mob khaub thuas lossis kub, hydrochloric acid, concentrated nitric acid thiab aqua regia yog dab tsi. Tantalum tau muab tso rau hauv sulfuric acid immersion ntawm 200 degree rau ib xyoos, thiab qhov chaw puas tsuas yog 0.006 hli; Cov txiaj ntsig kev sim qhia tau hais tias tantalum nyiam nyob rau hauv cov tshuaj alkaline, chlorine, bromine, sulfuric acid, thiab ntau lwm yam tshuaj tsis ua hauj lwm, tsuas yog nyob rau hauv hydrofluoric acid thiab kub concentrated sulfuric acid reacts. Qhov no kuj tsis tshua muaj nyob rau hauv cov hlau.
Cov yam ntxwv ntawm tantalum thiab nws txoj kev siv dav. Hauv kev npaj ntau yam khoom siv inorganic acid, nws tuaj yeem siv los hloov tantalum stainless hlau. Piv nrog rau cov hlau tsis muaj steel, cov kev pab cuam lub neej yog txhim kho ntau zaus. Tsis tas li ntawd, hauv kev lag luam tshuaj, khoom siv hluav taws xob, khoom siv hluav taws xob thiab lwm yam kev lag luam, tantalum tuaj yeem hloov tau cov hlau zoo nkauj platinum yav dhau los, uas txo tus nqi zoo heev.
Nws tuaj yeem ua lub luag haujlwm tseem ceeb hauv cov tshuaj niaj hnub, tantalum; cov kev tshawb fawb tau pom tias tantalum tsis tsuas yog tsis muaj kev puas tsuaj rau tib neeg lub cev; cov leeg ntawm tib neeg lub cev kuj tuaj yeem loj hlob, uas yog hu ua biocompatibility hauv tshuaj. Cov kws kho mob siv qhov kev ua haujlwm tantalum no los kho cov kab nrib pleb thiab qhov tsis xws luag hauv cov pob txha taub hau tawg thiab cov ceg tawv. Tantalum tseem tuaj yeem ua rau hauv cov filaments me dua li ib feem kaum ntawm tib neeg cov plaub hau, siv los ua sutures rau kev phais visceral lossis kos rau hauv lub qhov muag dag; Qhov tantalum filament no tuaj yeem hloov cov leeg thiab cov paj hlwb. Lub pob ntseg dag ua los ntawm Yaojia tantalum phaj yog ntsia rau sab nraum qab ntawm lub taub hau thiab tom qab ntawd hloov los ntawm daim tawv nqaij ntawm ceg. Tom qab ib lub sij hawm, cov tawv nqaij hloov tshiab zoo li zoo, thiab qhov uas tib neeg pom yog pob ntseg tantalum.