Nyob rau hauv lub realm ntawm metallurgy, chemistry, thiab khoom siv science, kev xaiv ntawm txoj caicruciblecov khoom siv yog qhov tseem ceeb hauv kev txiav txim siab txog kev ua tiav ntawm ntau yam txheej txheem, xws li kub-kub hlau alloying mus rau kev sib txuas ntawm cov ceramics siab heev thiab iav. Muaj ntau yam khoom siv crucible muaj, txhua tus nrog nws cov khoom tshwj xeeb thiab cov txiaj ntsig. Cia peb tshawb nrhiav cov ntaub ntawv zoo tshaj plaws rau crucibles kom ntxaws dua:
Quartz Crucibles
Quartz crucibles, feem ntau yog ua los ntawm high-purity fused silica, yog renowned rau lawv exceptional zoo. Lawv ua tau zoo hauv kev tiv thaiv qhov kub thiab txias, tiv taus qhov cuam tshuam corrosive ntawm acids thiab bases, thiab tswj kev ruaj ntseg nyob rau hauv huab cua kub. Cov crucibles pom lawv cov niche hauv melting high-purity hlau xws li silicon, aluminium, thiab hlau. Tsis tas li ntawd, lawv cov thermal conductivity zoo dua tuaj yeem txhim kho melting efficiency. Txawm li cas los xij, qhov zoo tshaj plaws ntawm quartz los ntawm tus nqi siab dua.
Ceramic Crucibles
Ceramic crucibles suav nrog ob pawg loj: aluminium oxide ceramics thiab zirconium oxide ceramics. Cov crucibles no muaj kev tiv thaiv kub zoo thiab tshuaj lom neeg ruaj khov, ua rau lawv muaj ntau yam kev xaiv rau melting ntau yam khoom, xws li hlau, iav, ceramics, thiab ntau dua. Txawm li cas los xij, lawv cov cua sov kuj tseem qis dua li ntawm quartz crucibles, uas ua rau lawv zoo dua rau cov ntaub ntawv nrog cov ntsiab lus melting hauv qab 1700 ° C.
Graphite Crucibles
Graphite crucibles yog cov neeg ua haujlwm ntawm qhov kub thiab txias, ib puag ncig siab, feem ntau ua haujlwm tseem ceeb hauv kev tshawb fawb metallurgical thiab tshuaj. Cov crucibles no muaj nyob rau hauv ob hom: ntuj graphite thiab hluavtaws graphite. Ntuj graphite crucibles khav theeb superior thermal stability thiab corrosion kuj, zoo tagnrho rau ntau yam kev siv kub. Ntawm qhov tod tes, hluavtaws graphite crucibles yog tus nqi-zoo tab sis tej zaum yuav muaj me ntsis txo stability thiab corrosion kuj.
Hlau Crucibles
Hlau crucibles yog tsim los ntawm cov ntaub ntawv xws li stainless hlau, molybdenum, platinum, thiab lwm yam. Lawv yog cov kev xaiv mus rau thaum cuam tshuam nrog cov ntaub ntawv nrog cov ntsiab lus siab melting tshwj xeeb lossis thaum ntsib nrog acidic lossis alkaline. Hlau crucibles pom muaj zog tiv thaiv corrosion thiab tswj kom zoo thermal stability. Txawm li cas los xij, lawv siv yog txuam nrog tus nqi siab dua piv rau lwm cov khoom siv crucible.
Sua ummary
Tnws xaiv cov khoom siv crucible yuav tsum tau tsav los ntawm cov khoom tshwj xeeb uas tau ua tiav thiab cov txheej txheem melting prevailing. Txhua hom crucible muaj nws qhov tshwj xeeb zoo thiab kev txwv, thiab xaiv qhov tsim nyog yog qhov tseem ceeb rau kev ua tiav cov txiaj ntsig zoo thiab ua tau zoo hauv thaj chaw metallurgy, chemistry, thiab cov khoom siv science.
Post lub sij hawm: Oct-24-2023