Phofo ea Magnesium Boride, MgB2

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Phofo ea Magnesium Boride, MgB2

Magnesium diboride superconductor ka motlakase, matla a khoheli, mocheso joalo-joalo e na le lits'ebetso tsa bohlokoa. Magnet a maholo a tsamaisang, likhoele tsa phetisetso ea motlakase le li-detectors tse thata tsa makenete


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Morero oa limolek'hule  MGB2
Nomoro ea CAS  12007-62-4
Mekhoa  phofo ea tšepe e bosoeu
Ho teteana  2,57 g, / cm3
Qhibiliha  830 C.
Sebelisa  Magnesium diboride superconductor ka motlakase, matla a khoheli, mocheso hape e na le lits'ebetso tsa bohlokoa. Limakte tse khabisang ka matla, li-transmitter tsa motlakase le li-detectors tse sa utloisiseheng tsa matla a khoheli

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Magnesium diboride
E boetse e tsejoa e le magnesium borate
K'hemik'hale ea motsoako MgB2
Boima ba limolek'hule 45.93
Nomoro ea CAS 12007-25-9
Qhibiliha ntlha 830 ℃
Boikarabello ke 2.57g / cm3

Magnesium diboride ke motsoako oa ionic o nang le sebopeho sa kristale e mahlakore a tšeletseng. Ke sesebelisoa se thata ebile se thata se nang le ductility e mpe. Ke motsoako oa lipalo. Magnesium le likarolo tsa boron li hlophisitsoe ka tsela e ngoe. E tla fetoha superconductor mochesong o haufi le mocheso o phethahetseng oa 40K (ke hore - 233 ℃). Mocheso oa eona oa phetoho o batla o phahame habeli ho feta oa li-superconductors tse ling tsa mofuta o tšoanang, 'me mocheso oa eona oa sebele oa ts'ebetso ke 20 ~ 30K. Mocheso oa phetoho o fetelletseng oa MgB2 ke 39K, ke hore tlasa 234 ℃, e leng mocheso o boima ka ho fetesisa oa li-superconductors tsa tšepe. E le sesebelisoa se secha se nang le tšebetso e phahameng haholo, magnesium diboride e bula tsela e ncha ea ho ithuta moloko o mocha oa semiconductor e phahameng ea mocheso o nang le sebopeho se bonolo. Superconductor magnesium diboride ke motsoako oa tšepe o entsoeng ka motsoako oa magnesium le boron ka karolelano ea 1: 2. E khetholloa ka lisebelisoa tse ngata, theko e tlase, ho khanna haholo, ho kopanya habonolo le ts'ebetso e bonolo.

Hobane MgB2 e bonolo ho etsoa lifilimi le likhoele tse tšesaane, e ka sebelisoa haholo ho etsa li-scanner tsa CT le lisebelisoa tse ling tsa elektroniki, likarolo tsa li-supercomputer le likarolo tsa lisebelisoa tsa phetisetso ea motlakase. E na le tebello e pharalletseng ea ts'ebeliso lebaleng la lisebelisoa tsa elektroniki le likhomphutha. Mofuta oa sampole ea li-superconductor tse phahameng tsa MgB2 e sebelisitsoe ka katleho ke mocheso o phahameng le mokhoa o phahameng oa khatello Chaena, e haufi le boemo ba machabeng. Likopo tse ka bang teng tsa MgB2 li kenyelletsa limakete tse tsamaisang motlakase ka matla, likhoele tsa phetisetso ea motlakase le li-detectors tse hlokolosi tsa matla a khoheli. Ka 2001, bafuputsi ba fumane hore motsoako oa nondescript, magnesium diboride, o fetoha superconductor mocheso o batlang o le haufi le mocheso o phethahetseng oa 40K (- 233 ℃). Mocheso oa eona oa phetoho o batla o phahame habeli ho feta oa li-superconductors tse ling tsa mofuta o tšoanang, 'me mocheso oa eona oa sebele oa ts'ebetso ke 20 ~ 30K. Ho fihlela mocheso ona, neon ea metsi, hydrogen ea metsi kapa sehatsetsi se koetsoeng se ka sebelisoa ho pholisa mocheso.

Ha li bapisoa le pholiso ea indasteri ea niobium alloy (4K) ka helium ea mokelikeli, mekhoa ena e bonolo ebile e na le litšenyehelo. Hang ha e sebelisitsoe ka khabone kapa litšila tse ling, bokhoni ba magnesium borate ho boloka ts'ebetso ea ts'ebetso e phahameng ha bo tlase ho ba alloy ea niobium kapa e betere le ho feta maemong a matla a khoheli kapa a hona joale. Lisebelisoa tsa eona tse ka bang teng li kenyelletsa limakete tse tsamaisang motlakase haholo, lithapo tsa phetisetso ea motlakase le li-detectors tse thata tsa makenete.

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