Alumina, los yog Aluminium Oxide, tuaj yeem tsim nyob rau hauv ntau yam ntawm purity.Cov qib zoo uas siv rau cov ntawv thov kev lag luam niaj hnub no yog 99.5% mus rau 99.9% nrog cov khoom ntxiv tsim los txhim kho cov khoom.Muaj ntau hom kev ua cov khoom siv ceramic tuaj yeem siv nrog rau kev ua haujlwm lossis kev tsim cov duab los tsim ntau qhov ntau thiab tsawg thiab cov duab ntawm cov khoom.
Al2O3 ceramics muaj qhov zoo hauv qab no:
1. High hardness (MOHS hardness yog 9) thiab zoo hnav tsis kam.
2. Zoo mechanical zog.Nws yog dabtsi yog khoov zog yuav mus txog 300 ~ 500MPa.
3. Kev ua haujlwm kub zoo heev.Nws ua haujlwm kub tsis tu ncua tuaj yeem ncav cuag 1000 ℃.
4. High resistivity thiab zoo hluav taws xob rwb thaiv tsev zog.Tshwj xeeb tshaj yog nrog zoo heev kub rwb thaiv tsev (Room-kub resistivity yog 1015Ω•cm) thiab voltage breakdown kuj (cov rwb thaiv tsev lub zog yog 15kV / mm).
5. Kev ruaj ntseg tshuaj zoo.Nws tsis cuam tshuam nrog sulfuric acid, hydrochloric acid, nitric acid thiab hydrofluoric acid.
6. Kub corrosion kuj.Nws tuaj yeem tiv taus yaig ntawm cov hlau molten zoo li Be, Sr, Ni, Al, V, Ta, Mn, Fe thiab Co.
Yog li ntawd, alumina ceramics yog dav siv nyob rau hauv niaj hnub industrial teb.Feem ntau siv nyob rau hauv semiconductor manufacturing kev lag luam, electronics kev lag luam, machinery kev lag luam, kub kub ib puag ncig, tshuaj lom neeg kev lag luam, lub teeb kev lag luam, textile thiab lwm yam teb.
Alumina yog cov khoom siv ceramic dav siv hauv cov ntawv hauv qab no:
✔ hluav taws xob insulators, corrosion-resistant Cheebtsam rau roj lasers, rau semiconductor ua khoom (xws li chuck, kawg effector, foob nplhaib)
✔ hluav taws xob insulators rau electron raj.
✔ Cov khoom siv rau lub tshuab nqus tsev siab thiab cov khoom siv cryogenic, cov khoom siv hluav taws xob hluav taws xob, cov cuab yeej siv thaum kub kub.
✔ Cov khoom tiv thaiv corrosion-tiv taus, piston rau cov twj, li qub thiab cov tshuab siv tshuaj, kuaj ntshav li qub.
✔ thermocouple raj, hluav taws xob insulators, sib tsoo xov xwm, xov qhia.
Post lub sij hawm: Lub Xya hli ntuj-14-2023