Nyob rau hauv lub realm ntawm ib tug siv lead ua rauv tshuab, efficiency thiab precision ntawm thermal tswj yog qhov tseem ceeb. Ua kom pom qhov ntsuas kub zoo sib xws thiab kev ruaj ntseg yog qhov tseem ceeb hauv kev loj hlob zoo ib leeg muaju. Txhawm rau daws cov teeb meem no,graphite cua sovtau tshwm sim los ua ib qho kev daws teeb meem zoo kawg li, ua tsaug rau lawv qhov tshwj xeeb thermal conductivity. Nyob rau hauv tsab xov xwm no, peb yuav delve rau hauv qhov tseem ceeb ntawm graphite heaters thiab lawv lub luag hauj lwm nyob rau hauv lub thermal teb ntawm ib tug crystal furnaces.
Graphite, ib daim ntawv ntawm cov pa roj carbon, muaj cov khoom tshwj xeeb uas ua rau nws yog cov khoom siv zoo tshaj plaws rau kev siv kub. Ib yam khoom zoo li no yog nws cov thermal conductivity zoo. Graphite muaj cov thermal conductivity tsis tshua muaj siab, tso cai rau nws mus sai thiab zoo hloov cua sov thoob plaws hauv nws cov qauv. Qhov tshwj xeeb tus yam ntxwv no ua rau nws muaj kev xaiv zoo raucua kub ntsiabnyob rau hauv ib tug crystal furnaces.
Lub thermal conductivity ntawm graphite tuaj yeem raug ntaus nqi rau nws cov qauv siv lead ua tshwj xeeb. Graphite muaj txheej ntawm carbon atoms teem nyob rau hauv ib tug hexagonal lattice. Nyob rau hauv txhua txheej, cov pa roj carbon atom yog nruj me ntsis sib koom ua ke, ua kom muaj zog covalent bonds. Txawm li cas los xij, kev sib txuas ntawm cov khaubncaws sab nraud povtseg tsis muaj zog, ua rau cov txheej txheem txheej nrog cov electrons dawb uas tuaj yeem txav tau yooj yim. Cov electrons dawb no ua rau graphite lub siab hluav taws xob thiab thermal conductivity.
Nyob rau hauv lub thermal teb ntawm ib tug crystal furnaces,graphite cua sovua lub luag haujlwm tseem ceeb hauv kev ua kom tau raws li qhov tseeb thiab cov cua sov sib xws. Los ntawm kev ua kom muaj cua sov zoo, lawv pab tswj qhov kub siab uas xav tau thoob plaws hauv txoj kev loj hlob siv lead ua. Cov thermal conductivity zoo heev ntawm graphite ua kom cov cua sov sib npaug sib npaug thoob plaws lub tshuab cua sov, txo qhov kub thiab txias gradients thiab hotspots. Qhov kev sib txuam no yog qhov tseem ceeb rau kev tswj hwm thiab kev loj hlob zoo ib yam ntawm cov muaju, uas cuam tshuam ncaj qha rau lawv cov khoom zoo thiab cov khoom.
Ntxiv mus, lub siab thermal conductivity ntawmgraphite cua sovtso cai rau cov cua kub ceev thiab cua txias, txo lub sijhawm ua haujlwm hauv ib qho kev loj hlob siv lead ua. Kev hloov pauv hluav taws xob tau zoo los ntawm graphite ua rau lub cub tawg kom ncav cuag qhov xav tau kub sai, txhim kho cov khoom tsim khoom siv lead ua. Tsis tas li ntawd, lub peev xwm ua kom txias sai sai tom qab cov txheej txheem kev loj hlob ua kom yooj yim siv lead ua extraction thiab txo lub sij hawm tag nrho cov khoom.
Graphite rhaubkuj tseem muaj qhov zoo thermal stability, ua rau lawv tiv taus qhov kub siab tshaj plaws nyob rau hauv ib puag ncig siv lead ua rauv taws. Lawv tuaj yeem ua haujlwm ntawm qhov kub siab yam tsis muaj qhov cuam tshuam loj lossis cuam tshuam. Qhov kev ruaj ntseg thermal no ua kom lub neej ntev thiab kev ntseeg siab ntawm cov cua sov, txo cov kev xav tau ntawm kev saib xyuas thiab kev poob qis hauv cov txheej txheem siv lead ua.
Lwm qhov zoo ntawmgraphite cua sovyog lawv compatibility nrog lub tshuab nqus tsev los yog tswj tej yam kev mob uas feem ntau ua hauj lwm nyob rau hauv ib tug crystal kev loj hlob. Graphite yog chemically inert thiab tsis hnov mob nrog feem ntau gases, cia nws tswj nws cov thermal zog nyob rau hauv ntau qhov chaw. Qhov no versatility uagraphite cua sovhaum rau ntau hom kev siv lead ua kev loj hlob, suav nrog Czochralski, Bridgman, thiab cov txheej txheem ntab ntab.
Hauv kev xaus, qhov tshwj xeeb thermal conductivity ntawmgraphite cua sovua rau lawv indispensable nyob rau hauv lub thermal teb ntawm ib tug crystal furnaces. Lawv lub peev xwm los hloov cov cua sov kom zoo thiab tswj kom muaj qhov sib txawv ntawm qhov kub thiab txias yog qhov tseem ceeb rau kev tswj kev loj hlob ntawm cov khoom siv zoo ib leeg. Graphite heaters pab kom ceev cua sov thiab cua txias, txhim khu kev tsim khoom, thiab muab thermal stability zoo nyob rau hauv huab huab cua. Raws li qhov kev thov rau kev ua haujlwm siab ib leeg zuj zus ntxiv, qhov tseem ceeb ntawm graphite heaters nyob rau hauv kev ua kom siv lead ua kev loj hlob technologies tsis tuaj yeem overstated.
Post lub sij hawm: Apr-08-2024