Alumina ceramic, tseem hu ua aluminium oxide (Al2O3), yog cov khoom siv ntau yam siv dav hauv ntau yam kev lag luam vim nws cov khoom tshwj xeeb, thermal, thiab hluav taws xob. Ib qho khoom tseem ceeb uas ua lub luag haujlwm tseem ceeb hauv nws qhov kev ua tau zoo yog qhov ntom ntom.
Hardness thiab hnav tsis kam
Nrog rau qib hardness nce mus txog ntawm pob zeb diamond, alumina ceramic paub txog nws lub peev xwm los tiv thaiv abrasive hnav thiab hnyav ua haujlwm. Qhov no ua rau nws yog qhov kev xaiv zoo tshaj plaws rau cov ntawv thov uas qhov kev ua haujlwm ntev thiab kev ua haujlwm ntev yog qhov tseem ceeb, xws li hauv kev tsim cov cuab yeej txiav, bearings, thiab hnav-resistant Cheebtsam.
Mechanical Strength thiab Striffness
Qhov ntom ntawm alumina ceramic kuj yog qhov tseem ceeb hauv kev txiav txim siab nws lub zog thiab kev ncaj ncees ntawm cov qauv. High-density ceramics feem ntau pom tias muaj zog thiab nruj dua, ua rau lawv tsim nyog rau cov ntawv thov uas cov khoom raug hnyav los yog hnyav heev. Alumina ceramic tuaj yeem khaws nws cov duab txawm nyob rau hauv cov xwm txheej hnyav xws li kub siab thiab cov txheej txheem tshuaj lom neeg uas ua rau cov khoom tawg. Qhov no yog vim nws muaj qhov ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom.
Thermal Properties
Ntxiv mus, qhov ntom ntawm alumina ceramic cuam tshuam nws cov khoom thermal. Alumina ceramic muaj cov thermal conductivity zoo heev, thiab nws qhov siab ceev ua lub luag haujlwm hauv kev txhim kho nws lub peev xwm ua kom sov. Cov cuab yeej no yog siv rau hauv ntau yam kev tswj xyuas thermal, suav nrog kev tsim cov khoom siv hluav taws xob rau cov cua kub kub, cov dab dej kub hauv cov khoom siv hluav taws xob, thiab cov txheej txheem thermal barrier coatings.
Kev tsim cov txheej txheem ntawm Alumina Ceramic
Kev tsim cov txheej txheem ntawm alumina ceramic suav nrog sintering, ib txoj hauv kev uas muaj kev cog lus thiab ua kom sov cov hmoov ceramic rau qhov kub thiab txias. Cov txheej txheem sintering, nrog rau qhov kub thiab txias, muaj kev cuam tshuam rau qhov ntom ntawm cov khoom tiav. Kev tswj kom zoo ntawm cov kev txwv no yog qhov tseem ceeb rau kev ua tiav qhov xav tau ceev thiab ua kom cov ceramic zoo tshaj plaws hauv cov ntawv thov tshwj xeeb.
Hauv kev xaus, qhov ntom ntawm alumina ceramic yog cov cuab yeej tseem ceeb uas cuam tshuam rau nws cov khoom siv dag zog, hnav tsis kam, thermal conductivity, thiab kev ua haujlwm tag nrho hauv ntau yam kev siv. Kev sib xyaw ua ke ntawm qhov chaw ntom ntom ntom thiab lwm yam kev zam tshwj xeeb ua rau Alumina txoj kev xaiv zoo tshaj plaws hauv kev lag luam los ntawm Aerospace thiab tsheb mus rau cov khoom siv hluav taws xob thiab tsheb kho mob. Raws li kev siv thev naus laus zis, kev tshawb fawb tsis tu ncua tuaj yeem nthuav tawm txoj hauv kev tshiab los txhim kho qhov ntom ntom thiab cov khoom ntawm alumina ceramic, qhib qhov muaj peev xwm tshiab rau nws siv hauv ntau hom.
