Aluminium oxide yog cov tshuaj formula rau alumina, ib yam khoom ua los ntawm txhuas thiab oxygen. Nws yog raug xa mus raws li txhuas oxide thiab yog qhov feem ntau tshwm sim ntawm qee cov txhuas oxides. Ntxiv nrog rau lub npe hu ua alumina, nws kuj tuaj yeem mus los ntawm cov npe aloxide, aloxite, lossis alundum, nyob ntawm nws daim ntawv thiab siv. Kab lus no tsom mus rau alumina daim ntawv thov nyob rau hauv ceramic teb.
Armor
Qee lub cev armors siv alumina ceramic daim hlau, feem ntau ua ke nrog aramid lossis UHMWPE thaub qab, kom tau txais txiaj ntsig tiv thaiv feem ntau phom sij. Txawm li cas los xij, nws tsis suav tias yog kev ua tub rog zoo. Tsis tas li ntawd, nws ua haujlwm los tiv thaiv alumina iav tiv thaiv qhov cuam tshuam ntawm .50 BMG cov mos txwv.
Biomedical Applications
Lub biomedical sector hnyav siv alumina ceramics vim lawv superior biocompatibility thiab durability tiv thaiv hnav thiab corrosion. Alumina ceramic yog cov khoom siv rau kev cog hniav, kev sib koom ua ke, thiab lwm yam khoom siv kho mob.
Abrasive
Ntau cov khoom siv abrasive feem ntau siv alumina vim nws qhov tshwj xeeb lub zog thiab hardness. Ntawm Mohs scale ntawm ntxhia hardness, nws ib txwm tshwm sim daim ntawv, corundum, tus nqi 9-hauv qab pob zeb diamond. Zoo ib yam li pob zeb diamond, ib qho tuaj yeem hnav alumina los tiv thaiv kev puas tsuaj. Clockmakers thiab watchmakers siv Diamantine, nyob rau hauv nws purest hmoov (dawb) daim ntawv, raws li ib tug superior polishing abrasive.
Rwb thaiv tsev
Alumina yog ib qho zoo heev insulator, ua rau nws haum rau siv nyob rau hauv high-kub thiab high-voltage daim ntaub ntawv. Nws yog siv los ua ib qho substrate (silicon ntawm sapphire) thiab qhov thaiv qhov thaiv hauv kev sib xyaw ua ke los tsim cov khoom siv hluav taws xob xws li ib leeg-electron transistors, superconducting quantum interference devices (SQUIDs), thiab superconducting qubits.
Sib tsoo
Ceramics sector kuj siv alumina ua qhov sib tsoo nruab nrab. Alumina yog cov khoom siv zoo tshaj plaws los siv hauv kev sib tsoo daim ntaub ntawv vim nws hardness thiab hnav tsis kam. Pob zeb mills, vibratory mills, thiab lwm yam kev sib tsoo tshuab siv alumina ua qhov sib tsoo nruab nrab.
Xaus
Txawm hais tias alumina feem ntau paub txog nws txoj kev siv hauv aluminium ntau lawm, nws tseem tuav qhov tseem ceeb hauv ntau qhov chaw ceramic. Nws yog cov khoom siv zoo tshaj plaws rau cov ntawv thov no vim nws qhov siab melting point, zoo thermal thiab mechanical zog, insulating zog, hnav tsis kam, thiab biocompatibility.
