1. Cov khoom siv thiab cov yam ntxwv zoo
1.1 Alumina Cov ntsiab lus thiab Crystal Phase Evolution
( Alumina hauv ob sab phlu)
Alumina hauv ob sab phlu yog tuab, crafted refractory ceramics tsuas yog tsim los ntawm txhuas oxide (Al ob O SIX), nrog cov ntsiab lus feem ntau txawv ntawm 50% mus dhau 99%, ncaj qha cuam tshuam lawv cov kev ua tau zoo hauv cov ntawv thov kub kub.
Lub zog mechanical, corrosion kuj, thiab refractoriness ntawm cov cib no txhim kho nrog ntau dua alumina tsom xam raws li qhov tshwm sim ntawm kev nce qib ntawm lub microstructure ruaj khov los ntawm thermodynamically ruaj ntseg α-alumina (pob zeb diamond) theem.
Thaum tsim khoom, precursor khoom xws li calcined bauxite, integrated alumina, los yog dag alumina hydrate mus los ntawm kev kub kub tua (1400 ° C– 1700 ° C), advertising theem transformation ntawm transitional alumina hom (c, d) rau α-Al Ob O Peb, uas qhia phenomenal solidity (9 ntawm Mohs range) thiab melting factor (2054 ° C).
Cov txheej txheem polycrystalline tshwm sim muaj kev sib cuam tshuam corundum nplej embedded hauv siliceous lossis aluminosilicate glassy matrix, lub make-up thiab kom muaj nuj nqis uas tau tswj kom sib npaug ntawm thermal shock kuj thiab tshuaj toughness.
Cov khoom xyaw me me xws li silica (SiO ₂), titania (TSI ₂), los yog zirconia (ZrO ₂) tej zaum yuav raug qhia kom hloov sintering cwj pwm, txhawb densification, los yog txhim khu kev tiv thaiv rau tej slags thiab fluxes.
1.2 Microstructure, Porosity, thiab Mechanical Integrity
Kev ua haujlwm ntawm alumina hauv ob sab phlu yog tiag tiag nyob ntawm lawv cov microstructure, tshwj xeeb tshaj yog grain loj faib, pore morphology, thiab kev sib raug zoo theem attribute.
Qhov zoo tshaj plaws cib tso saib zoo heev, tsis tu ncua faib pores (kaw porosity xaiv) thiab qhib porosity tsawg heev (
Alumina Technology Co., Ltd., Ltd tsom rau kev tshawb fawb thiab kev tsim kho, ntau lawm thiab muag khoom ntawm aluminium oxide hmoov, cov khoom siv aluminium oxide, aluminium oxide crucible, lwm., ua haujlwm rau electronics, ceramics, tshuaj thiab lwm yam lag luam. Txij li thaum nws tsim nyob rau hauv 2005, lub tuam txhab tau cog lus los muab cov neeg siv khoom nrog cov khoom zoo tshaj plaws thiab kev pabcuam. Yog tias koj tab tom nrhiav kom zoo alumina ua 2o3, thov koj xav tiv tauj peb.
Cim npe: Alumina hauv ob sab phlu, alumina, alumina oxide hmoov
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