Sab saum toj kaum feem ntau siv Thermal cov ntaub ntawv

Thermal conductivity yog ib qho kev ntsuas ntawm cov khoom siv lub peev xwm los ua kom muaj cua sov. Cov ntaub ntawv nrog siab thermal conductivity hloov tshav kub ua kom muaj zog thiab nqus tau tshav kub sai ntawm ib puag ncig. Conversely, txom nyem thermals cuam tshuam nrog cua sov ntws thiab maj mam nqus cua sov los ntawm ib puag ncig. Raws li S.I (system International) Cov Lus Qhia) Cov Lus Qhia, Chav Tsev ntawm Thermal Condivity rau cov khoom siv rau ib lub 'meter' Kelvin (W / M•K). Lub kaum kaum thermally cov ntaub ntawv thiab lawv cov thermal consivity ntsuas yog qhia hauv qab no. Vim tias thermal conductivity sib txawv sib txawv nrog cov thermal conductivity xeem khoom siv thiab ntsuas ib puag ncig, cov thermal kev coj ua yog qhov tseem ceeb.

Sab saum toj kaum feem ntau siv Thermal cov ntaub ntawv

1. Pob Zeb-2000 ~ 2200 w / m•K

Pob zeb diamond yog ib qho ntawm cov ntaub ntawv qhia ua hluav taws xob, nrog qhov tseem ceeb tsib lub sijhawm siab dua li tooj liab, feem ntau tsim cov hlau loj hauv Tebchaws Meskas. Pob zeb atoms muaj cov roj ntoo yooj yim, cov qauv molecular zoo tshaj plaws rau kev hloov pauv kub. Nyob rau hauv dav dav, cov ntaub ntawv nrog cov tshuaj tov yooj yim tshaj plaws thiab cov qauv molecular feem ntau muaj qhov siab tshaj plaws thermal capesity. Pob zeb diamond yog qhov tseem ceeb ntawm ntau txhais tes tshiab - Muaj cov khoom siv hluav taws xob. Hauv cov khoom siv hluav taws xob, nws tuaj yeem txhawb thaum muaj kev cuam tshuam thaum tshav kub kub thiab tiv thaiv cov chaw rhiab ntawm cov khoos phis tawj. Pob zeb diamond lub siab thermal conductivity kuj tseem muaj txiaj ntsig zoo hauv kev ua pov thawj gemstones hauv cov hniav nyiaj hniav kub. Ntxiv tsuas yog ib qho me me ntawm pob zeb diamond rau koj cov cuab yeej thiab cov txuj ci tuaj yeem muaj feem cuam tshuam loj heev ntawm kev ua haujlwm thermal.

2. Nyiaj-429 w / m•K

Nyiaj yog tus nqi pheej yig thiab muaj kev suav ntau ntawm cov cua sov. Nyiaj yog cov khoom siv rau ntau cov tais diav thiab yog malleable, ua nws yog ib qho ntawm feem ntau ntawm cov hlau. 35% ntawm cov nyiaj tsim hauv Tebchaws Meskas yog siv rau hauv cov cuab yeej hluav taws xob thiab hluav taws xob (Asmeskas Geological Minerals Ntiaj Teb 2013). Muab tshuaj txhuam, a Paste tuaj yeem siv los tsim cov photovoltic hlwb, uas yog ib qho tseem ceeb ntawm lub hnub ci ci.

3. Tooj-398 w / m•K

Hauv Tebchaws Meskas, tooj liab yog cov hlau siv feem ntau siv rau cov khoom siv cua sov. Tooj liab muaj lub siab melting taw tes thiab ib tug mob corrosion. Thiab tuaj yeem txo cov zog poob hauv cov txheej txheem kub hloov. Cov lauj kaub hlau, cov kav hlau kub, thiab cov tsheb hluav taws xob kub tsuas yog qee cov cuab yeej siv ntawm tooj liab lub tshav kub - Ua cov khoom siv hluav taws xob.

4. Kub-315 w / m•K

Kub yog qhov tsis tshua muaj cov hlau uas tsis muaj nqi rau hauv cov ntawv thov hloov cua sov. Tsis zoo li cov nyiaj thiab tooj liab, kub feem ntau tsis tarnish thiab yog heev resistant rau corrosion.

5. Aluminium nitride-310 w / m•K

Aluminium Nitride feem ntau siv los hloov chaw rau beryllium oxide. Tsis zoo li bergyllicium oxide tsis yog kev phom sij rau kev noj qab haus huv nyob rau hauv ntau lawm, tab sis tseem yuav ua yeeb yam tshuaj lom neeg thiab lub cev rau beryllium oxide. Aluminium Nitride yog ib qho ntawm ob peb cov ntaub ntawv uas paub tias muaj hluav taws xob hluav taws xob thiab muaj siab thermal conductivity. Muaj cov cua sov zoo heev thiab tuaj yeem siv ua cov tshuaj insulator hluav taws xob rau cov chips txhua lub chips.

6. Silicon Carbide-270 w / m•K

Silicon carbide yog semiconductor muaj los ntawm silicon atoms thiab carbon atoms hauv seem. Ib fusion ntawm silicon thiab carbon, ob qho sib txuas los tsim cov khoom nyuaj, ruaj. Qhov sib xyaw no yog feem ntau siv hauv cov kab mob tsheb, cov khoom siv ntawm cov tshuab raj, thiab tseem siv hauv stathmaking.

7. Aluminium-247 w / m•K

Aluminium yog tsis kim thiab feem ntau yog siv los hloov tooj liab. Txawm hais tias tsis yog li thermally tswvyim li tooj liab, txhuas yog muaj ntau thiab muaj qhov tsawg me me, ua kom yooj yim rau cov txheej txheem. Aluminium yog cov khoom tseem ceeb nyob rau hauv kev tsim cov coj (teeb qhib kev teev kos Diode) teeb. Tooj liab - Aluminium hybrids tau ua ntau dua vim tias lawv coj tau zoo dua cov yam ntxwv ntawm tus tooj liab thiab txhuas thiab yog pheej yig dua los tsim khoom.

8. Tungsten-173 w / m•K

Tungsten muaj lub siab melting point thiab qis vapor siab, ua nws cov khoom zoo rau kev hu rau siab cov khoom siv tam sim no. Tungsten yog siv tshuaj tsis ruaj khov thiab tuaj yeem siv rau hauv cov electrodes ntawm electron microSCOckscopes tsis muaj hloov cov ntws tam sim no. Kuj tseem siv nyob rau hauv lub teeb qij lossis raws li cov khoom sib xyaw ntawm Cathode Rast Tubes.