Cov Khoom Siv Hluav Taws Xob Hluav Taws Xob

Cov khoom siv hluav taws xob rwb thaiv tsev

Xa mus rau cov cuab yeej plooj (porcelain), nws muaj cov khoom siv hluav taws xob zoo heev thiab siv los ua cov khoom siv hluav taws xob rau cov khoom siv, cov txheej txheem thiab cov khoom hauv cov khoom siv hluav taws xob thiab khoom siv. Cov cuab yeej thaiv hluav taws xob suav nrog ntau yam insulators, coil thav duab, tus tuav lub raj, cov hloov hluav taws xob, cov khoom txhawb nqa lub zog, cov khoom sib txuas hauv Circuit Court thiab cov plhaub ntim. Qhov xav tau yooj yim rau hom plooj (porcelain) no yog dielectric tsis tu ncua ε, me me dielectric poob tanδ, rwb thaiv tsev siab tiv taus ρ, siab tawg lub zog E, thiab zoo dielectric kub yam ntxwv thiab cov yam ntxwv zaus. Ib qho ntxiv, cov cuab yeej muaj zog ntau dua thiab kev ruaj ntseg tshuaj kuj tseem xav tau.

Ntawm cov hom khoom lag luam no, cov plooj (porcelain) thiab cov plooj (alumina porcelain) yog cov siv ntau tshaj plaws. Lawv lub ntsiab tseem ceeb ua ntu ntu ntu yog thiab feem. Talc porcelain muaj hluav taws xob zoo hluav taws xob thiab tus nqi qis, thiab yog cov cuab yeej siv hluav taws xob ntau zaus siv hauv xov tooj cua zaus. Alumina plooj (porcelain) yog ib yam uas muaj ntau zaus, kub thiab muaj peev xwm ua kom lub zog muaj zog nrog cov rwb thaiv hluav taws xob zoo dua. Nws cov khoom siv hluav taws xob thiab lub cev nce nrog kev nce ntawm cov ntsiab lus txhuas oxide. Feem ntau siv yog cov plooj (alumina) siab uas muaj 75%, 95%, thiab 99%alumina. Hauv qee qhov xav tau kev sib xyaw ua ke, txawm tias cov plooj (corundum porcelain) ntshiab nrog cov ntsiab lus txhuas oxide ntawm 99.9% tau siv, nws cov khoom zoo ib yam li sapphire ib leeg muaju. Qhov tsis zoo ntawm cov plooj (alumina) siab, tshwj xeeb tshaj yog cov plooj (corundum porcelain) ntshiab, yog qhov nyuaj hauv kev tsim khoom, kub kub thiab kub siab.

Kuj tseem muaj ib hom kev ua kom muaj cua sov zoo uas sawv cev los ntawm beryllium oxide (BeO) hauv cov plooj (porcelain). Cov cua sov hauv chav sov ua kom sov ntawm beryllium oxide porcelain uas muaj BeO95% yog tib yam li cov hlau. Beryllium oxide kuj muaj cov khoom siv hluav taws xob zoo, tiv taus kub thiab muaj zog ua haujlwm siab. Qhov tsis zoo yog tias cov khoom siv raw ntawm BeO yog tshuaj lom heev, thiab cov khoom siv ceramic muaj qhov kub ua kom kub, uas txwv nws daim ntawv thov. Boron nitride (BN) cov plooj (porcelain) thiab txhuas nitride (AlN) cov plooj (porcelain) kuj tseem muaj cov cua sov ua kom sov ntau. Txawm hais tias lawv cov cua sov tsis zoo li beryllium oxide plooj (porcelain), lawv tsis muaj kuab lom, txheej txheem txheej txheem thiab cov khoom siv hluav taws xob tau zoo, thiab tuaj yeem siv rau qhov ntau zaus thiab lub zog loj transistors. Siv rau kev tso cua sov thiab kev rwb thaiv tsev hauv cov voj voog loj sib xyaw ua ke.

Tsim ib hom kub-nias ceramics nrog SiC ua cov khoom siv hauv paus thiab doped nrog me me ntawm BeO thiab lwm yam tsis huv. Cov nplais zoo li no muaj cov rwb thaiv tsev zoo heev, thiab nws cov cua sov ua kom sov siab dua li ntawm beryllium oxide plooj (porcelain) nrog qhov huv ntawm 99%. Nws cov thermal nthuav dav coefficient nyob ze rau ntawm silicon ib qho muaju hauv qhov ntau qhov kub thiab, thiab cia siab tias yuav siv rau hauv kev sib koom ua ke loj nrog cov hluav taws xob loj.

Qes-alkali feldspar plooj (porcelain), uas yog siv los ua matrix ntawm carbon zaj duab xis thiab hlau zaj duab xis resistors, kuj tseem yog ib qho tseem ceeb thiab tsis kim cov plooj (porcelain) ntaus ntawv, tab sis nws dielectric poob yog qhov loj thiab nws tsis haum rau siv hauv qhov ntau.