Isingeniso esifushane sezakhiwo ezibonakalayo ze-tantalum metal

I-Tantalum Physical Properties

Uphawu lwekhemikhali u-Ta, insimbi empunga yensimbi, ingeyeqembu le-VB kuthebula le-periodic le

izakhi, inombolo ye-athomu 73, isisindo se-athomu 180.9479, ikristalu eyi-cubic egxile emzimbeni,

i-valence evamile ingu-+5. Ubulukhuni be-tantalum buphansi futhi buhlobene nomoya-mpilo

okuqukethwe. Ubulukhuni be-Vickers be-tantalum ehlanzekile evamile bungu-140HV kuphela ku-

isimo se-annealed. Iphuzu layo lokuncibilika liphezulu njengoba lifinyelela ku-2995°C, likleliswe endaweni yesihlanu phakathi kwe

izinto eziyisisekelo ngemuva kwekhabhoni, i-tungsten, i-rhenium ne-osmium. I-Tantalum

ithambile futhi ingadonswa ibe imicu emincane ukwenza amafoil amancane. I-coefficient yayo ye-

ukwanda okushisayo kuncane. Ikhula kuphela ngezingxenye ezingu-6.6 ngesigidi ngedigri Celsius.

Ngaphezu kwalokho, ukuqina kwayo kunamandla kakhulu, kungcono nakakhulu kunethusi.

Inombolo ye-CAS: 7440-25-7

Isigaba se-elementi: izakhi zensimbi eziguqukayo.

Isisindo se-athomu esihlobene: 180.94788 (12C = 12.0000)

Ukuminyana: 16650kg/m³; 16.654g/cm³

Ukuqina: 6.5

Indawo: Umjikelezo wesithupha, Iqembu VB, Indawo d

Ukubukeka: Steel Gray Metallic

Ukucushwa kwe-electron: [Xe] 4f14 5d3 6s2

Ivolumu ye-athomu: 10.90cm3 / mol

Okuqukethwe kwezakhi emanzini olwandle: 0.000002ppm

Okuqukethwe ku-crust: 1ppm

Isimo se-oxidation: +5 (okukhulu), -3, -1, 0, +1, +2, +3

Isakhiwo sekristalu: Iyunithi yeyunithi iyi-cubic unit cell egxile emzimbeni, kanye neyunithi yeyunithi ngayinye

iqukethe ama-athomu ensimbi angu-2.

Amapharamitha weseli:

a = 330.13 pm

b = 330.13 pm

c = 330.13 pm

α = 90°

β = 90°

γ = 90°

Ubulukhuni be-Vickers (ukuncibilika kwe-arc nokuqina okubandayo): 230HV

Ubulukhuni be-Vickers (i-recrystallization annealing): 140HV

Ubulukhuni be-Vickers (ngemuva kokuncibilika kwe-electron beam eyodwa): 70HV

Ubulukhuni be-Vickers (buncibilikiswa yi-electron ugongolo lwesibili): 45-55HV

Indawo yokuncibilika: 2995°C

Isivinini sokusabalala komsindo kuyo: 3400m/s

Amandla e-ionization (kJ/mol)

M – M+ 761

M+ – M2+ 1500

I-M2+ – M3+ 2100

I-M3+ – M4+ 3200

I-M4+ – M5+ 4300

Kutholwe ngu: 1802 ngusokhemisi waseSweden u-Anders Gustafa Eckberg.

Ukuqanjwa kwento: U-Ekberg wetha le nto ngoTantalus, uyise weNdlovukazi

UNeobi waseThebes emlandweni wasendulo wamaGreki.

Umthombo: Itholakala kakhulu ku-tantalite futhi ihlangana ne-niobium.