Mankhwala enaake a Boride ufa, MgB2

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Mankhwala enaake a Boride ufa, MgB2

Magnesium diboride superconductor pamagetsi, maginito, kutentha ndi zina zotero.it ili ndi ntchito zofunikira. Maginito opitilira muyeso, mizere yamagetsi yamagetsi ndi zoyesera zamagetsi zamagetsi


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Njira yamagulu  MGB2
Nambala ya CAS  12007-62-4
Makhalidwe  ufa wakuda wakuda wakuda
Kuchulukitsitsa  2.57 g / cm3
Kusungunuka  830 C.
Ntchito  Magnesium diboride superconductor pamagetsi, maginito, kutentha komanso imakhala ndi ntchito zofunikira. Maginito opitilira muyeso, magetsi opatsira magetsi ndi maginito oyang'anira maginito

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Magnesium diboride
Amadziwikanso kuti magnesium borate
Mankhwala chilinganizo MgB2
Maselo olemera 45.93
Nambala ya CAS 12007-25-9
Limatsogolera mfundo 830 ℃
Kuchuluka kwake ndi 2.57g / cm3

Magnesium diboride ndi gawo la ionic lokhala ndi ma crystal. Ndi nkhani yopepuka komanso yolimba yopanda mphamvu. Ndi malo ophatikizira. Magnesium ndi boron zigawo zimakonzedwa mosiyanasiyana. Idzasandulika kukhala superconductor pamatenthedwe oyandikira pang'ono kutentha kwa 40K (ie - 233 ℃). Kutentha kwake kosintha ndikokwera pafupifupi kawiri kuposa kwama superconductors ena amtundu womwewo, ndipo kutentha kwake kogwira ntchito ndi 20 ~ 30K. Kutentha kosakanikirana kwa MgB2 ndi 39K, ndiko kupatula 234 ℃, komwe ndikutentha kovuta kwambiri kwa ma superconductors azitsulo. Monga chinthu chatsopano chokhala ndi superconductivity, magnesium diboride imatsegula njira yatsopano yophunzirira mbadwo watsopano wa semiconductor wotentha wosavuta. Superconductor magnesium diboride ndichitsulo chopangidwa ndi kuphatikiza kwa magnesium ndi boron mu chiŵerengero cha 1: 2. Amadziwika ndi zinthu zambiri, mtengo wotsika, kutsika kwakukulu, kaphatikizidwe kosavuta komanso kukonza kosavuta.

Chifukwa MgB2 ndiyosavuta kupangidwa kukhala makanema ochepera ndi mawaya, itha kugwiritsidwa ntchito kwambiri pakupanga makina a CT ndi zida zina zamagetsi, zida zama supercomputer komanso zida zamagetsi zamagetsi. Ili ndi chiyembekezo chogwiritsa ntchito zamagetsi ndi makompyuta. Mtundu wamagetsi osakanikirana a MgB2 superconductor adakonzedwa bwino ndi kutentha komanso kuthamanga kwa njira ku China, yomwe ili pafupi ndi mayiko ena. Ntchito zomwe MgB2 ingagwiritse ntchito zikuphatikiza maginito opitilira muyeso, zingwe zamagetsi zamagetsi ndi zoyesera zamagetsi zamagetsi. Mu 2001, ofufuza adapeza kuti chophatikizira cha nondescript, magnesium diboride, chimasintha kukhala superconductor pamatenthedwe pafupi pang'ono ndi kutentha kwenikweni kwa 40K (- 233 ℃). Kutentha kwake kosintha ndikokwera pafupifupi kawiri kuposa kwama superconductors ena amtundu womwewo, ndipo kutentha kwake kogwira ntchito ndi 20 ~ 30K. Kuti tikwaniritse kutentha uku, madzi amadzimadzi, hydrogen wamadzimadzi kapena firiji yotsekedwa amatha kugwiritsidwa ntchito kuziziritsa kutentha.

Poyerekeza ndi kuziziritsa kwa mafakitale kwa niobium alloy (4K) yokhala ndi helium yamadzi, njirazi ndizosavuta komanso yosafuna zambiri. Mukapangidwanso ndi kaboni kapena zosafunika zina, kuthekera kwa magnesium borate kukhalabe ndi mphamvu yayikulu kwambiri kumakhala kocheperako poyerekeza ndi aloyi ya niobium kapena bwino pakakhala maginito kapena pano. Zomwe zingagwiritsidwe ntchito zikuphatikiza maginito opitilira muyeso, zingwe zamagetsi zamagetsi ndi zoyesera zamagetsi zamagetsi.

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