Tšepe fetisisa conductive ka lefatše

Boleng tšepe ka ho toba a ikemiselitse ke lik'hemik'hale tsa bona le thepa ea 'mele. Tabeng ea joalo tekanyo e itseng, e le conductivity ea motlakase, kamano ea ha e le tse nepahetseng. tšepe fetisisa conductive, haeba pontshi lekanngoa ka mocheso kamoreng (+20 ° C), - silevera. Empa theko e phahameng lekanyetsang tshebediso ya likarolo silevera motlakase le microelectronics. likarolo silevera le disebediswa tse joalo etsa kopo feela tabeng ea ka botleng a moruo.

Se boleloang ke 'meleng conductivity ea

Tshebediso ya conductors metallic na le histori e telele-eme. Bo-rasaense le baenjiniere ba sebetsa masimong a saense le theknoloji, ho sebedisa matla a motlakase ka nako e telele ho fumana thepa lithapo, boemelong, mabitso a mang, mapolanka hatisitsoeng oa potoloho , 'me joalo-joalo. D. Lemoha tšepe fetisisa conductive lefatšeng thusa ngata' meleng bitsoa conductivity motlakase.

Ya kgopolo ya morao conduction motlakase ho hanyetsa. Ditirisanommogo poleloana e reng conductivity amanang le unit trust hanyetsa, eo ho eona tsamaiso ea machaba ea diyuniti (SI) e lekanya ka ohms. Unit tsa conductivity ea motlakase ka SI e - Siemens. Russia kgetho ya unit trust ena - Sheba, ea machaba - S. Electric conductivity ea 1 cm, karolo e itseng o na le marangrang a motlakase le ho hanyetsa ea 1 ohms.

conductivity

Ho mehato bokhoni ba ntho e ho khanna oa motlakase hona joale e bitsoang conductivity. Phahameng ka ho fetisisa ka pontshi ena o na le tšepe ho fetisisa conductive. bath Sena se ka ho ikemisetsa ho ntho efe kapa efe kapa mahareng instrumentally le o na le poleloana e reng dipalo tsena. Conductivity cylindrical mokhanni unit trust bolelele le unit trust sefapano sectional sebakeng se amana le resistivity ya mokhanni le.

System unit trust conductivity ke Siemens ka mitha - S / m. Ho fumana hore na ke tsa tšepe tsa tšepe ho fetisisa conductive lefatšeng, ho lekaneng ho e bapisa conductivity bona, e rera experimentally. E mong a ka fumana hore na resistivity ka sesebediswa se khethehileng - microohmmeter. litšobotsi tse tsena ke pitikololo.

conductivity ea tšepe

Khopolo ea hona joale ea motlakase ka phallo laela ea likaroloana qosoa bonahale dintho tse ngata e lumellanang e thehiloeng lattices kristale tšepe tlholeho. Qoso bajari ha jwale motlakase ka tšepe bolokolohing dieleketerone le ions e se bona, ha e ntse e se etsahala ka mecha ea phatlalatso ea mokelikeli. Ho ile ha thehoa experimentally hore ha hona joale ha a hlahe ka tšepe particulate ntho phetiso pakeng conductors ena.

dintho Metallic fapana le leng litlamo feta lokolohile ka phahameng ka ho athomo. The sesebediswa ka hare tšepe e tšoauoa ka ho ba teng ha palo e khōlō ea "sa masoha" dieleketerone. eo, ha a pepesa ho foromo feela oa mabotho a motlakase tsamaisoa phallo. Ka hona, ke se na tšepe ho makatse hore ebe ke conductors molemo tsa morao-rao ea motlakase, 'me seo joalo ditshebeditsano limolek'hule fapana tšepe fetisisa conductive. Ka likarolo tsa mohaho o kristale lekhoakhoa tsa tšepe e 'ngoe e thehiloeng thepa tsa bona tse tobileng - phahameng mocheso conductivity.

Holimo ho conductors molemo ka ho fetisisa - tšepe

4 tšepe le molemo o sebetsang bakeng sa ho sebelisoa e le conductors motlakase di ajoa taelo e latelang ea boholo mabapi le conductivity ea, lekanngoa ka cm, / limithara:

1. Silver - milione 62,5.
2. Koporo - milione 59,5.
3. Khauta - milione 45,5.
4. Aluminium - milione 38.

E ka bone hore tšepe e ngata conductive - silevera. Empa joaloka khauta, e sebelisoa ho tiisa marangrang motlakase feela maemong a khethehileng, e itseng. Lebaka - litšenyehelo tse phahameng.

Empa koporo le aluminium - ke khetho atileng ka ho fetisisa bakeng sa lihlahisoa tsa motlakase le kabel ka lebaka la ho hanyetsa bona tlaase ho jwale motlakase le ditheko tse tlase. lirafshoa tse ling tse sebelisoang ka conductors seoelo.

Lintlha susumetsa le conductivity ea tšepe

Esita le tšepe conductive fokotsa conductivity lona ha ho na le hona joale additives tse ling le litšila. Ka lits'epe tse kopantsoeng ka ntle "hloekileng" tšepe lekhoakhoa sebopeho. Ho fapana ka ho tlōla setshwani, mapetsong le likoli tse ling. conductivity ea e fokotsehile 'me ha eketseha mogote.

E ile ea eketseha ho hanyetsa tlholeho ka lits'epe tse kopantsoeng le sebelisitsoe ka likarolo futhumatsang. Ke ho makatse ho tlhahisong ea thepa ea motheo ea motlakase ho sebelisa mehaho, heaters nichrome di a sebelisa, fechral le lits'epe tse kopantsoeng tse ling.

conductive tšepe ho fetisisa - ba le silevera ena ea bohlokoa e sa sebelisoa ke boramabenyane, coinage jj Leha ho le joalo, ka mokhoa o le kofuto ea lik'hemik'hale lona itseng le thepa 'meleng ba ho pharaletseng sebelisoa ... Mohlala, ntle ho sebedisa nodes le aggregates le tlaase barbotage hanyetsa le silevera ea ho thibela ho ikopanya le sehlopha ho tswa ho kena moea. E ikhethang thepa ea silevera le lits'epe tse kopantsoeng tsa lona hangata e sebelisa ho ka lokafatsoang, ho sa tsotellehe theko e phahameng.