POB KHIB, tseem hu ua graphite lossis cov khoom siv graphite, yog cov khoom siv zoo heev nrog ntau cov yam ntxwv ua tau zoo. Nyob rau hauv cov kev siv kub siab, nkag siab txog cov pwm melting ntawm carbon graphite yog qhov tseem ceeb heev cuam tshuam nrog cov ntaub ntawv ruaj khov thiab siv tau ntawm cov ntaub ntawv hauv huab cua sov.
Cov pa roj carbon graphite yog cov khoom siv ntawm cov roj atoms, nrog ntau cov qauv siv lead ua. Cov qauv txheej txheem graphite yog cov qauv fawm kib, qhov twg cov txheej txheem rasters, thiab cov roj ntsha uas muaj zog, yog li cov khaubncaws sab nraud pov tseg tau yooj yim. Tus qauv no xaus carbon graphite nrog cov thermal zoo heev thiab lubricity, ua rau nws ua tau zoo nyob rau hauv qhov kub thiab kub kev txhuam ib puag ncig.
Melting taw tes ntawm carbon graphite
Qhov tseeb melting taw tes ntawm Pa roj carbon graphite yog hais txog qhov kub ntawm cov pa roj carbon graphite hloov los ntawm cov khoom siv rau cov kua hluav taws xob siab. Lub suab nrov ntawm graphite nyob ntawm yam xws li nws cov qauv ua qauv thiab cov kev ua kom huv, yog li nws tuaj yeem muaj qee qhov kev hloov pauv. Txawm li cas los xij, feem ntau, lub ntsiab lus melting ntawm graphite yog nyob rau hauv cov kev kub-kub ntau.
Qhov txheem melting point ntawm graphite feem ntau yog li 3550 degrees Celsius (lossis txog 6422 degrees Fahrenheit). Qhov no ua rau graphite ib qho kev tiv thaiv kub heev rau haum rau ntau qhov kev siv hluav taws kub, xws li hlau hluav taws xob, cov hluav taws xob hluav taws xob, thiab kev kuaj hluav taws xob. Nws lub siab melting point ua rau graphite los tswj nws cov qauv kev ruaj ntseg thiab kev ua haujlwm hauv cov cua sov thermal no, tsis muaj kev sib daj xeeb lossis tsis muaj zog.
Txawm li cas los xij, nws yog tsim nyog sau cia tias lub ntsiab lus melting ntawm graphite yog txawv ntawm nws qhov kev tiv thaiv. Txawm hais tias graphite tsis yaj ntawm qhov kub heev, nws tuaj yeem hlawv nyob rau hauv huab cua nplua nuj (xws li oxygen nplua nuj).
Kev thov kub siab ntawm graphite
Lub siab melting taw tes ntawm graphite ua si tseem ceeb hauv ntau daim teb, thiab cov hauv qab no yog qee cov ntawv thov kub siab:
1. Hlau smelting
Nyob rau hauv cov txheej txheem ntawm cov hlau smelting, siab siab taw tes graphite yog feem ntau siv raws li cov khoom siv xws li cov ntaub pua av, thiab cov cub hluav taws xob. Nws tuaj yeem tiv taus kub siab thiab muaj cov thermal zoo heev, uas pab kom yaj thiab ua pov cov hlau.
2. Lemiconductor Raug
Cov txheej txheem sib raug zoo semiconductor yuav tsum muaj cov cua sov kub los npaj cov ntaub ntawv semiconductor xws li Crystalline Silicon. Graphite yog dav siv raws li lub cub tawg thiab cua sov vim tias nws tuaj yeem ua haujlwm ntawm cov kub siab heev thiab muab cov thermal conditionivity.
3. Tshuaj Kev Lag Luam
Graphite yog siv rau hauv kev lag luam tshuaj lom neeg tsim cov tshuaj muaj tshuaj lom neeg, xa xov, cov khoom siv cua sov, thiab cov khoom siv cua sov, thiab catalyst cov ntaub ntawv cua sov. Nws qhov kev kub kub-kub ruaj khov thiab corrosion tiv taus ua rau nws xaiv qhov zoo tshaj plaws rau kev tswj cov khoom corrosive.
4. Kuaj qhov cub
Kuaj qhovces ntsuas feem ntau siv graphite ua cua sov rau ntau yam kev sim kub thiab khoom siv. Graphite cross yog cov feem ntau siv rau cov qauv melting thiab thermal tsom xam.
5. AERPOSPACE THIAB Nuclear Kev Lag Luam
Hauv Aerospace thiab nuclear kev lag luam, graphite yog siv los tsim cov khoom kub thiab cov khoom siv, xws li roj quad cladding cov ntaub ntawv hauv cov tshuaj tua kab.
Kev hloov pauv thiab cov ntawv thov ntawm graphite
Ntxiv rau cov qauv graphite, muaj lwm hom graphite graphite, hloov graphite Composites, thiab lwm yam, uas muaj kev ua haujlwm tshwj xeeb hauv cov kev siv kub siab.
Pyrolytic graphite: Hom graphite no muaj cov khoom siv hluav taws xob siab thiab zoo heev thermal condal. Nws yog dav siv nyob rau hauv cov liaj teb xws li aerospace thiab semiconductor kev lag luam.
Cov Graphite Hloov Kho: los ntawm kev qhia txog kev impurities lossis cov khoom sib txawv tuaj yeem hloov kho, xws li ua kom lub thermal conductivity.
Hlau raws li cov khoom siv: Cov khoom siv no ua ke cov duab sib xyaw nrog cov khoom siv hlau, thiab yog qhov tsim nyog rau cov qauv kub-thiab cov khoom siv.
Cntawm ulcusion
Qhov siab melting taw tes ntawm carbon graphite ua nws indispensable cov khoom siv hauv ntau-kev siv kub-kub. Txawm hais tias nyob rau hauv cov hlau smelting, semiconductor raug, tshuaj lom neeg kev lag luam, lossis kev kuaj hluav taws xob, lossis cov txheej txheem uas muaj peev xwm ua rau ntawm huab cua sov heev. Nyob rau tib lub sijhawm, qhov sib txawv sib txawv thiab hloov kho ntawm graphite kuj tseem ua rau nws cov kev daws teeb meem tshwj xeeb rau cov zej zog kev lag luam thiab scientific. Nrog kev txhim kho kev ua lag luam tu tas li, peb tuaj yeem cia siab tias yuav pom ntau dua cov khoom siv kub tshiab kom tau raws li cov kev xav tau ntawm cov txheej txheem kub.
Lub sijhawm Post: Oct-23-2023