He hoʻolauna pōkole i nā waiwai kino o ka metala tantalum

Na Waiwai Kino Tantalum

ʻO ka hōʻailona kemika Ta, metala hina hina, no ka hui VB i ka papaʻaina o

nā mea, ka helu ʻātoma 73, ke kaumaha ʻātoma 180.9479, ke aniani cubic i waena o ke kino,

ʻO ka valence maʻamau he +5. He haʻahaʻa ka paʻakikī o ka tantalum a pili i ka oxygen

maʻiʻo. ʻO ka paʻakikī Vickers o ka tantalum maʻemaʻe maʻamau he 140HV wale nō i ka

kūlana annealed. He kiʻekiʻe kona helu hoʻoheheʻe ʻana ma 2995°C, ma ka pae ʻelima ma waena o nā

nā mea waiwai ma hope o carbon, tungsten, rhenium a me osmium. ʻO Tantalum

malleable a hiki ke huki ʻia i loko o nā filament lahilahi e hana ai i nā pepa lahilahi. Kona heluna o

liʻiliʻi ka hoʻonui wela. Hoʻonui wale ia e 6.6 mau ʻāpana i ka miliona no ka degere Celsius.

Eia kekahi, ʻoi aku ka ikaika o kona paʻakikī, ʻoi aku ka maikaʻi ma mua o ke keleawe.

Helu CAS: 7440-25-7

Māhele ʻeleʻele: nā mea metala hoʻololi.

Nuipa atomika pili: 180.94788 (12C = 12.0000)

Māmā: 16650kg/m³; 16.654g/cm³

Paʻakiki: 6.5

Wahi: Kaapuni ʻeono, Pūʻulu VB, Wahi d

ʻAno: Steel Grey Metallic

Hoʻonohonoho electron: [Xe] 4f14 5d3 6s2

Ka nui atomika: 10.90cm3/mol

ʻO ka ʻike o nā mea i loko o ka wai kai: 0.000002ppm

Maʻiʻo i loko o ka ʻōpala: 1ppm

Kūlana oxidation: +5 (nui), -3, -1, 0, +1, +2, +3

ʻO ka hoʻolālā aniani: ʻO ka pūnaewele ʻāpana he pūnaʻi ʻāpana cubic i hoʻokumu ʻia i ke kino, a me kēlā me kēia pūnaehana ʻāpana

loaʻa i nā ʻātoma metala 2.

Nā ʻāpana kelepona:

a = 330.13 pm

b = 330.13 pm

c = 330.13 pm

α = 90°

β = 90°

γ = 90°

ʻO ka paʻakikī o Vickers (ka hoʻoheheʻe ʻana a me ka paʻakikī anu): 230HV

ʻO Vickers paʻakikī (recrystallization annealing): 140HV

ʻO ka paʻakikī o Vickers (ma hope o ka hoʻoheheʻe ʻana o hoʻokahi electron beam): 70HV

ʻO ka paʻakikī o Vickers (hoʻoheheʻe ʻia e ke kukui uila lua): 45-55HV

Kahi hehee: 2995°C

ʻO ka wikiwiki hoʻolaha o ke kani i loko: 3400m/s

Iona hoʻonaʻauao (kJ/mol)

M – M+ 761

M+ – M2+ 1500

M2+ – M3+ 2100

M3+ – M4+ 3200

M4+ – M5+ 4300

Ua ʻike ʻia e: 1802 e ke kāmeka Suedena ʻo Anders Gustafa Eckberg.

Kapa inoa ʻana: Ua kapa ʻo Ekberg i ka mea ma hope o Tantalus, ka makuakāne o ka Mōʻīwahine

ʻO Neobi o Thebes ma ka moʻolelo mele Helene kahiko.

Puna: Aia ma ka tantalite a noho pū me ka niobium.