Nano magnesium oxide yog ib qho zoo heev alkaline oxide.Vim nws qhov siab melting point ntawm 2800 ° C thiab qee cov khoom tshwj xeeb thiab zoo heev, nws tuaj yeem siv rau hauv qhov chaw siab tshaj plaws ceramic.Nyob rau hauv cov nqe lus ntawm daim ntawv thov, nws yuav muab faib ua ob txoj kev: ncaj qha sintering rau hauv ceramics thiab siv raws li ib tug sintering pab rau lwm yam ceramics.
Direct sintering rau hauv ceramics
Nano magnesium oxide yog ib qho zoo heev ceramic raw khoom.Vim nws cov cua sov zoo thiab muaj zog tiv thaiv yaig los ntawm alkaline hlau daws, magnesium oxide ceramics feem ntau haum rau qhov kub thiab txias.Nws tuaj yeem siv los ua lub crucible rau smelting hlau, thiab hauv kev lag luam atomic zog nws kuj yog tsim rau smelting high-purity uranium thiab thorium.Nws kuj tseem siv tau los ua lub tes tsho tiv thaiv rau cov thermocouples.Vim tias nws muaj cov cuab yeej tso cai rau cov hluav taws xob tsis sib xws, nws tuaj yeem siv los ua lub npog radar thiab cov khoom siv qhov rais rau cov hluav taws xob infrared.Nws tseem yog cov khoom siv raw rau piezoelectric thiab superconducting cov ntaub ntawv, thiab yog ib puag ncig tus phooj ywg thiab resistant rau txhuas corrosion.Nws kuj tseem tuaj yeem siv los ua cov khoom siv ceramic sintering, tshwj xeeb tshaj yog rau kev tiv thaiv sintering ntawm cov khoom siv ceramic xws li β-Al2O3 uas muaj cov khoom corrosive thiab volatile ntawm qhov kub thiab txias.
Siv ua sintering pab rau lwm yam ceramics
Nano magnesium oxide kuj tseem tuaj yeem ntxiv rau cov txheej txheem kev npaj ntawm lwm cov ceramics, uas muaj cov txiaj ntsig zoo ntawm kev txo cov iav hloov pauv kub, txo qhov kub ntawm sintering, thiab txhim kho cov khoom kho qhov muag thiab cov khoom siv ntawm cov ceramics, yog li pab peb tau txais cov khoom siv ceramics zoo dua. .
Piv txwv li, silicon nitride ceramics tau dhau los ua ib qho kev cog lus siab tshaj plaws ntawm cov khoom siv hluav taws xob vim lawv qhov kub thiab txias zog, thermal shock resistance, thiab tshuaj stability.Txawm li cas los xij, nws muaj zog covalent daim ntawv cog lus thiab qis diffusion coefficient ua rau nws nyuaj rau sinter densification.Qhov sib ntxiv ntawm magnesium oxide tuaj yeem hnov mob nrog cov silica rau ntawm qhov chaw ntawm silicon nitride hmoov thaum lub sij hawm sintering los ua silicate kua theem, uas tuaj yeem txhawb kev sintering ntawm silicon nitride ceramics.Tam sim no, MgO-Y2O3 cov khoom siv sib xyaw sintering feem ntau yog siv los ua kom tiav atmospheric siab sintering ntawm silicon nitride ceramics.
Hauv cov ntsiab lus, nano magnesium oxide ua lub luag haujlwm tseem ceeb hauv thaj chaw ceramic.Nws tuaj yeem ua cov khoom siv yooj yim lossis cov khoom siv ntxiv los txhim kho kev ua haujlwm thiab kev ua haujlwm ntawm ceramics, yog li txhawb kev nce qib thiab kev loj hlob ntawm kev lag luam ceramic.
Post lub sij hawm: Lub Xya hli ntuj-14-2023