Alumina, lossis Aluminium Oxide, tuaj yeem tsim tau ntau yam kev huv. Cov qib ib txwm siv rau kev siv hauv kev lag luam niaj hnub no yog 99.5% txog 99.9% nrog cov khoom ntxiv uas tsim los txhim kho cov khoom. Ntau yam kev ua cov khoom siv ceramic tuaj yeem siv tau suav nrog kev siv tshuab lossis kev tsim cov duab los tsim ntau yam qhov ntau thiab tsawg thiab cov duab ntawm cov khoom.
Al2O3 ceramics muaj cov txiaj ntsig zoo li nram no:
1. Kev nyuaj siab (MOHS hardness yog 9) thiab kev hnav tsis kam zoo.
2. Lub zog kho tshuab zoo. Nws lub zog khoov tau txog li 300 ~ 500MPa.
3. Tiv taus cua sov zoo heev. Nws qhov kub ua haujlwm tas mus li tuaj yeem txog li 1000 ℃.
4. Muaj zog tiv taus hluav taws xob thiab zoo rwb thaiv tsev. Tshwj xeeb tshaj yog nrog kev rwb thaiv tsev kub zoo heev (Qhov kub hauv chav tsev yog 1015Ω • cm) thiab kev tiv thaiv hluav taws xob tawg (lub zog rwb thaiv tsev yog 15kV / hli).
5. Kev ruaj khov tshuaj zoo. Nws tsis cuam tshuam nrog sulfuric acid, hydrochloric acid, nitric acid thiab hydrofluoric acid.
6. Tiv taus xeb kub heev. Nws tuaj yeem tiv taus kev yaig ntawm cov hlau yaj xws li Be, Sr, Ni, Al, V, Ta, Mn, Fe thiab Co.
Yog li ntawd, alumina ceramics yog siv dav hauv cov teb kev lag luam niaj hnub no. Feem ntau siv rau hauv kev lag luam semiconductor, kev lag luam hluav taws xob, kev lag luam tshuab, qhov chaw kub siab, kev lag luam tshuaj lom neeg, kev lag luam lub teeb, textile thiab lwm yam.
Alumina yog cov khoom siv ceramic uas siv dav hauv cov ntawv thov hauv qab no:
✔ cov khoom siv hluav taws xob, cov khoom tiv thaiv xeb rau cov roj lasers, rau cov khoom siv ua semiconductor (xws li chuck, end effector, seal ring)
✔ cov insulators hluav taws xob rau cov raj hluav taws xob.
✔ cov khoom siv rau cov khoom siv nqus tsev siab thiab cov khoom siv cryogenic, cov khoom siv hluav taws xob nuclear, cov khoom siv siv ntawm qhov kub siab.
✔ Cov khoom tiv taus xeb, piston rau cov twj tso kua mis, cov li qub thiab cov tshuab dosing, kuaj cov li qub ntshav.
✔ cov raj thermocouple, cov insulators hluav taws xob, cov khoom sib tsoo, cov xov qhia.
Lub sijhawm tshaj tawm: Lub Xya Hli-14-2023