Cov pa roj carbon graphite, tseem hu ua graphite lossis graphite khoom, yog cov khoom siv kub kub zoo heev nrog ntau yam kev ua tau zoo. Hauv cov ntawv thov kub kub, kev nkag siab txog qhov melting point ntawm carbon graphite yog qhov tseem ceeb vim nws ncaj qha cuam tshuam rau kev ruaj ntseg thiab siv tau ntawm cov ntaub ntawv nyob rau hauv huab cua kub ib puag ncig.
Carbon graphite yog cov khoom tsim los ntawm carbon atoms, nrog rau ntau yam siv lead ua qauv. Cov qauv graphite feem ntau yog cov txheej txheem txheej txheej, qhov twg cov pa roj carbon atom tau teeb tsa hauv cov txheej txheem hexagonal, thiab kev sib txuas ntawm cov khaubncaws sab nraud povtseg tsis muaj zog, yog li cov khaubncaws sab nraud povtseg tau yooj yim. Cov qauv no endows carbon graphite nrog zoo thermal conductivity thiab lubrication, ua kom nws ua tau zoo nyob rau hauv qhov kub thiab txias ib puag ncig kev sib txhuam.
Melting point ntawm carbon graphite
Lub melting point ntawm carbon graphite yog hais txog qhov kub ntawm qhov uas carbon graphite hloov los ntawm cov khoom mus rau cov kua nyob rau hauv tus qauv atmospheric siab. Lub melting point ntawm graphite nyob ntawm yam xws li nws cov qauv siv lead ua thiab purity, yog li nws tuaj yeem muaj qee yam kev hloov pauv. Txawm li cas los xij, feem ntau, lub melting point ntawm graphite yog nyob rau hauv lub high-temperature range.
Tus qauv melting point ntawm graphite feem ntau yog hais txog 3550 degrees Celsius (los yog li ntawm 6422 degrees Fahrenheit). Qhov no ua rau graphite yog cov khoom siv kub-resistant kub uas haum rau ntau yam kev siv kub, xws li hlau smelting, hluav taws xob arc rauv, semiconductor ntau lawm, thiab kuaj rauv taws. Nws lub siab melting point enables graphite tswj nws cov qauv kev ruaj ntseg thiab kev ua tau zoo nyob rau hauv cov huab cua kub ib puag ncig, tsis tas yuav ua rau melting los yog poob txhua yam zog.
Txawm li cas los xij, nws tsim nyog sau cia tias qhov melting point ntawm graphite yog txawv los ntawm nws qhov ignition point. Txawm hais tias graphite tsis yaj ntawm qhov kub siab heev, nws tuaj yeem hlawv nyob rau hauv qhov xwm txheej huab cua (xws li oxygen nplua nuj ib puag ncig).
High kub daim ntawv thov ntawm graphite
Lub siab melting point ntawm graphite plays lub luag hauj lwm tseem ceeb nyob rau hauv ntau lub teb, thiab cov hauv qab no yog ib co ntawm lub ntsiab high-temperature daim ntaub ntawv:
1. Hlau smelting
Nyob rau hauv cov txheej txheem ntawm cov hlau smelting, siab melting point graphite feem ntau yog siv los ua cov khoom xws li crucibles, electrodes, thiab rauv liners. Nws tuaj yeem tiv taus qhov kub thiab txias heev thiab muaj cov thermal conductivity zoo, uas pab kom yaj thiab cam khwb cia hlau.
2. Kev tsim khoom semiconductor
Cov txheej txheem tsim khoom semiconductor yuav tsum muaj qhov kub thiab txias los npaj cov khoom siv semiconductor xws li crystalline silicon. Graphite yog dav siv los ua lub cub tawg thiab cua sov vim nws tuaj yeem ua haujlwm ntawm qhov kub thiab txias thiab muab cov thermal conductivity ruaj khov.
3. Kev lag luam tshuaj
Graphite yog siv nyob rau hauv kev lag luam tshuaj los tsim tshuaj reactors, pipelines, cua sov ntsiab, thiab catalyst cov ntaub ntawv txhawb nqa. Nws qhov kub thiab txias stability thiab corrosion kuj ua rau nws yog ib qho kev xaiv zoo tshaj plaws rau kev tuav cov tshuaj corrosive.
4. Chav ntsuas qhov cub
Cov qhov cub hauv chav kuaj feem ntau siv graphite ua cov khoom cua sov rau ntau yam kev sim ntsuas kub thiab ua cov khoom siv. Graphite crucibles kuj feem ntau siv rau cov qauv melting thiab thermal tsom xam.
5. Aerospace thiab Nuclear Kev Lag Luam
Hauv kev lag luam aerospace thiab nuclear, graphite yog siv los tsim cov khoom kub thiab cov khoom siv, xws li roj pas nrig cladding cov ntaub ntawv hauv nuclear reactors.
Variations thiab Applications of Graphite
Ntxiv nrog rau cov qauv graphite, muaj lwm hom carbon graphite variants, xws li pyrolytic graphite, hloov graphite, hlau raws li graphite composites, thiab lwm yam, uas muaj cov yam ntxwv tshwj xeeb ntawm kev ua haujlwm kub sib txawv.
Pyrolytic Graphite: Hom graphite no muaj anisotropy siab thiab zoo thermal conductivity. Nws yog dav siv nyob rau hauv teb xws li aerospace thiab semiconductor kev lag luam.
Hloov kho graphite: Los ntawm kev qhia impurities lossis kev hloov kho saum npoo rau hauv graphite, cov khoom tshwj xeeb tuaj yeem txhim kho, xws li kev txhim kho corrosion los yog txhim kho thermal conductivity.
Hlau raws graphite cov ntaub ntawv sib xyaw: Cov ntaub ntawv sib xyaw ua ke ua ke graphite nrog cov khoom siv hlau, muaj cov khoom kub kub ntawm graphite thiab cov khoom siv ntawm cov hlau, thiab tsim nyog rau cov qauv kub thiab cov khoom siv.
Csuav nrog
Lub siab melting point ntawm carbon graphite ua rau nws ib tug indispensable khoom nyob rau hauv ntau yam high-temperature daim ntaub ntawv. Txawm hais tias nyob rau hauv cov hlau smelting, semiconductor manufacturing, tshuaj lom neeg kev lag luam, los yog lub chaw soj nstuam furnaces, graphite plays ib tug tseem ceeb luag hauj lwm nyob rau hauv kom ntseeg tau tias cov txheej txheem no yuav stably nqa tawm ntawm huab cua kub. Nyob rau tib lub sijhawm, qhov sib txawv thiab kev hloov kho ntawm graphite kuj ua rau nws haum rau ntau yam kev siv tshwj xeeb, muab ntau yam kev daws teeb meem rau cov zej zog kev lag luam thiab kev tshawb fawb. Nrog kev txhim kho txuas ntxiv ntawm thev naus laus zis, peb tuaj yeem cia siab tias yuav pom qhov tshwm sim ntawm cov khoom siv kub kub tshiab kom tau raws li qhov xav tau hloov pauv tas li ntawm cov txheej txheem kub.
Post lub sij hawm: Oct-23-2023