Nkag siab qhov txawv ntawm Clay Graphite Crucibles thiab Graphite Silicon Carbide Crucibles

Thaum ua cov kev sim tshuaj kub kub lossis cov ntawv thov kev lag luam, kev xaiv cov khoom siv crucible plays lub luag haujlwm tseem ceeb hauv kev ua kom muaj kev vam meej thiab kev nyab xeeb ntawm cov txheej txheem. Ob hom crucibles uas siv ntau tshaj yogav nplaum graphite cruciblesthiabgraphite silicon carbide crucibles. To taub nws cov khoom muaj pes tsawg leeg, refractory kub, tshuaj inertness, thiab thermal conductivity yog ib qho tseem ceeb rau kev txiav txim kom paub meej thaum xaiv qhov tsim nyog crucible rau tej yam kev kuaj los yog industrial xav tau kev pab.

cov khoom siv:
Av nplaum graphite crucible yog tsim los ntawm graphite, av nplaum thiab ib qho ntawm cov roj nplua nyeem, thiab paub txog nws cov tshuaj inertness. Ntawm qhov tod tes, graphite silicon carbide crucible yog ua los ntawm silicon carbide hmoov thiab qee lub ntiaj teb tsis tshua muaj oxides, thiab muaj cov yam ntxwv ntawm qhov kub thiab txias tsis kam, zoo thermal poob siab tsis kam, thiab siab tshuaj inertness.

Hluav taws kub tsis kam:
Qhov kub ntawm cov av nplaum graphite crucibles feem ntau ncav cuag li 1200 ° C, thaum graphite silicon carbide crucibles tuaj yeem tiv taus qhov kub siab tshaj 1500 ° C. Qhov no ua rau graphite silicon carbide crucibles zoo dua rau cov ntawv thov uas xav tau kub siab dua hauv kev sim tshuaj thiab cov txheej txheem kev lag luam.

Chemically inert:
Ob hom crucibles muaj ib tug degree ntawm chemical inertness, nyob ruaj khov nyob rau hauv feem ntau acid, alkali, thiab ntsev tov thiab resistant rau corrosion. Txawm li cas los xij, cov av nplaum tiv thaiv hauv av nplaum graphite crucibles ua rau nws yooj yim dua rau nqus cov kab thiab impurities piv rau graphite silicon carbide crucibles.

Thermal conductivity:
Graphite muaj cov thermal conductivity siab thiab tuaj yeem ua kom sov sai sai. Txawm li cas los xij, vim yog cov qauv xoob ntawm cov av nplaum graphite crucible, cov pob dub tuaj yeem tshwm sim ntawm nws qhov chaw thiab yuav tsum tau ntxuav tas li. Nyob rau hauv sib piv, graphite silicon carbide crucibles muaj ib tug qis thermal conductivity thiab yuav tsis tawm stains rau saum npoo. Tsis tas li ntawd, lawv cov hardness siab tiv thaiv hnav thiab deformation.

Xaiv qhov zoo crucible:
Thaum xaiv ib lub chaw kuaj tshuaj chemical crucible, cov kev cai tshwj xeeb yuav tsum tau txiav txim siab. Av nplaum graphite crucibles yog tsim rau kev sim chemistry dav dav, thaum graphite silicon carbide crucibles yog qhov zoo tagnrho rau kev sim xav tau qhov kub thiab txias thiab xav tau ntau dua. Nws yog ib qho tseem ceeb kom ua raws li cov lus qhia rau kev siv kom nruj kom tsis txhob muaj kev sim ua tsis tiav vim kev ua haujlwm tsis raug.

Hauv cov ntsiab lus, kev nkag siab qhov sib txawv ntawm cov av nplaum graphite crucibles thiab graphite silicon carbide crucibles yog qhov tseem ceeb rau kev xaiv qhov tsim nyog crucible rau ib qho chaw kuaj lossis daim ntawv thov kev lag luam. Los ntawm kev xav txog yam xws li qhov kub thiab txias, tshuaj inertness thiab thermal conductivity, cov kws tshawb fawb thiab cov kws tshaj lij tuaj yeem txiav txim siab kom paub meej txog kev ua tiav thiab kev nyab xeeb ntawm kev sim thiab cov txheej txheem.