Cov Khoom Siv Hluav Taws Xob Silicon Carbide Rod: Tus Tsav Tsheb Tseem Ceeb ntawm Kev Lag Luam Kub Siab

Hauv kev siv kub siab hauv kev lag luam niaj hnub no, cov khoom siv hluav taws xob cua sov silicon carbide rod tau tshwm sim sai sai ua ib qho thev naus laus zis tseem ceeb rau ntau yam kev lag luam. Raws li cov khoom siv hluav taws xob cua sov uas tsis yog hlau ua haujlwm siab, cov pas nrig silicon carbide tau hloov pauv qhov chaw ntawm kev lag luam kub siab nrog lawv cov khoom zoo kawg nkaus ntawm kev tiv taus kub siab, kev tiv taus oxidation, thiab kev tiv taus corrosion.

Lub hauv paus ntsiab lus ua haujlwm ntawm silicon carbide rods yog raws li cov khoom siv hluav taws xob thiab thermal tshwj xeeb ntawm cov khoom siv silicon carbide. Thaum lub zog hluav taws xob hla dhau silicon carbide rod, kev txav ntawm cov electrons hauv silicon carbide tsim cov cua sov resistive, ua rau muaj kev hloov pauv zoo ntawm lub zog hluav taws xob mus rau hauv lub zog cua sov. Cov txheej txheem hloov pauv no tsis yog tsuas yog ua haujlwm tau zoo xwb tab sis kuj ruaj khov, tso cai rau cov rods ua haujlwm tas li ntawm qhov kub txog li 1500 ° C lossis siab dua, muab qhov chaw cua sov txhim khu kev qha rau ntau yam txheej txheem kub siab.

Hais txog kev siv, cov khoom siv hluav taws xob cua sov silicon carbide rod tau txais kev siv dav dav thoob plaws ntau yam lag luam. Hauv kev lag luam metallurgical, cov pas nrig silicon carbide high-density ua haujlwm ua cov khoom siv cua sov tseem ceeb hauv cov cub hluav taws xob, muab qhov chaw ruaj khov kub rau kev smelting ntawm cov hlau xws li hlau thiab tooj liab. Lub caij no, lawv tuaj yeem tiv taus kev yaig ntawm cov huab cua nyuaj hauv lub cub tawg, ua rau lub neej ua haujlwm ntawm cov khoom siv ntev dua. Hauv kev lag luam ceramic thiab iav, qhov thermal conductivity zoo heev ntawm cov pas nrig silicon carbide ua kom muaj cua sov sib npaug thaum lub sijhawm sintering thiab yaj ntawm cov khoom, yog li txhim kho cov khoom zoo thiab cov txiaj ntsig. Tsis tas li ntawd, hauv cov teb xws li kev ua cov khoom siv semiconductor, kev tsim khoom siv hluav taws xob, thiab kev tshawb fawb tshawb fawb, cov pas nrig silicon carbide tau txais kev nyiam heev rau lawv cov txiaj ntsig xws li cua sov sai thiab kev tswj qhov kub kom raug.

Nrog kev nce qib ntawm lub hom phiaj "ob-carbon", cov txiaj ntsig txuag hluav taws xob ntawm cov khoom siv hluav taws xob silicon carbide rod tau dhau los ua qhov tseem ceeb. Lawv lub peev xwm ua kom sov sai txo kev siv hluav taws xob, thaum cov nyhuv ua kom sov sib xws txhawb nqa kev ua haujlwm kom zoo, txo kev siv hluav taws xob thib ob. Ntxiv mus, lub neej ua haujlwm ntev ntawm silicon carbide rods txo cov khoom pov tseg, muab kev txhawb nqa zoo rau kev txhim kho kev lag luam kom ruaj khov.

Saib mus tom ntej, nrog rau kev nce qib tas mus li ntawm cov ntaub ntawv tshawb fawb thiab cov txheej txheem tsim khoom, cov khoom siv hluav taws xob silicon carbide rod xav tias yuav ua tiav cov kev ua tau zoo dua thiab nthuav dav lawv cov ntawv thov hauv kev lag luam tshiab, xws li kev npaj cov khoom siv hluav taws xob tshiab thiab kev tshawb fawb txog cov ntaub ntawv kub siab superconducting. Nrog rau lawv cov txiaj ntsig zoo ntawm kev siv tshuab, cov khoom siv hluav taws xob silicon carbide rod tau teeb tsa los ua lub zog tseem ceeb tsav tsheb tsim kho tshiab thiab kev txhim kho hauv kev lag luam kub siab.