Aluminium oxide alpha-theem 99.999% (cov hlau hauv paus)
| AluminiumOxide | |
| Tus lej CAS | 1344-28-1 |
| Cov mis tshuaj | Al2O3 |
| Qhov hnyav ntawm cov molar | 101.960 g · mol −1 |
| Qhov tsos | dawb khov kho |
| Tsw tsw phem | tsis muaj ntxhiab |
| Qhov Ceev | 3.987g/cm3 |
| Qhov kub yaj | 2,072°C(3,762°F;2,345K) |
| Kub taw tes | 2,977°C(5,391°F;3,250K) |
| Kev yaj hauv dej | tsis yaj |
| Kev yaj tau | tsis yaj hauv txhua cov kuab tshuaj |
| logP | 0.3186 |
| Kev cuam tshuam sib nqus (χ) | −37.0 × 10−6cm3/mol |
| Kev ua kom sov tau zoo | 30W·m−1·K−1 |
Cov Lus Qhia Txog Kev Lag Luam rauAluminium Oxide
| Lub Cim | CrystalHom Qauv | Al2O3≥ (%) | Txawv Teb Chaws Mat.≤(%) | Qhov Loj ntawm Cov Khoom Me Me | ||
| Si | Fe | Mg | ||||
| UMAO3N | a | 99.9 | - | - | - | 1 ~ 5μm |
| UMAO4N | a | 99.99 | 0.003 | 0.003 | 0.003 | 100 ~ 150nm |
| UMAO5N | a | 99.999 | 0.0002 | 0.0002 | 0.0001 | 0.2 ~ 10μm |
| UMAO6N | a | 99.9999 | - | - | - | 1 ~ 10μm |
Kev Ntim: ntim rau hauv thoob thiab kaw sab hauv los ntawm cohesion ethene, qhov hnyav tag nrho yog 20 kilogram ib thoob.
Aluminium Oxide siv rau dab tsi?
Alumina (Al2O3)ua haujlwm ua cov khoom siv raw rau ntau yam khoom siv ceramic siab heev thiab ua tus neeg sawv cev nquag hauv kev ua tshuaj lom neeg, suav nrog adsorbents, catalysts, microelectronics, tshuaj lom neeg, kev lag luam aerospace, thiab lwm qhov chaw thev naus laus zis siab. Cov yam ntxwv zoo tshaj plaws alumina tuaj yeem muab ua rau nws zoo tagnrho rau kev siv hauv ntau daim ntawv thov. Qee qhov kev siv ntau tshaj plaws sab nraum kev tsim khoom txhuas tau teev hauv qab no. Cov khoom sau. Vim tias cov tshuaj lom neeg tsis muaj zog thiab dawb, txhuas oxide yog cov khoom sau nyiam rau cov yas. Iav. Ntau cov qauv ntawm iav muaj txhuas oxide ua cov khoom xyaw. Catalysis txhuas oxide catalyses ntau yam kev tshuaj tiv thaiv uas muaj txiaj ntsig zoo hauv kev lag luam. Kev ntxuav roj. txhuas oxide yog siv dav los tshem tawm dej ntawm cov kwj roj. Abrasive. txhuas oxide yog siv rau nws qhov nyuaj thiab lub zog. Xim. txhuas oxide flakes yog siv hauv xim rau cov teebmeem zoo nkauj. Composite fiber. txhuas oxide tau siv hauv ob peb qhov kev sim thiab kev lag luam fiber cov ntaub ntawv rau kev ua haujlwm siab (piv txwv li, Fiber FP, Nextel 610, Nextel 720). Cov cuab yeej tiv thaiv lub cev. Qee cov cuab yeej tiv thaiv lub cev siv cov phaj alumina ceramic, feem ntau ua ke nrog aramid lossis UHMWPE thaub qab kom ua tiav qhov ua tau zoo tiv thaiv feem ntau ntawm cov phom tua phom. Kev tiv thaiv kev sib txhuam. Aluminium oxide tuaj yeem loj hlob ua ib txheej ntawm txhuas los ntawm anodizing lossis los ntawm plasma electrolytic oxidation. Kev rwb thaiv hluav taws xob. Aluminium oxide yog ib qho insulator hluav taws xob siv ua lub substrate (silicon ntawm sapphire) rau cov circuits sib xyaw ua ke tab sis kuj yog ib qho kev thaiv qhov av rau kev tsim cov khoom siv superconducting xws li cov transistors electron ib leeg thiab cov khoom siv superconducting quantum interference (SQUIDs).
Aluminium Oxide, ua ib qho dielectric nrog qhov sib txawv loj heev, yog siv ua ib qho thaiv rwb thaiv tsev hauv capacitors. Hauv teeb pom kev zoo, translucent aluminium oxide yog siv rau hauv qee lub teeb sodium vapor. Aluminium oxide kuj tseem siv rau hauv kev npaj cov txheej txheem hauv cov teeb fluorescent compact. Hauv cov chaw soj nstuam chemistry, aluminium oxide yog ib qho nruab nrab rau chromatography, muaj nyob rau hauv cov qauv yooj yim (pH 9.5), acidic (pH 4.5 thaum nyob hauv dej) thiab cov qauv tsis muaj zog. Kev siv rau kev noj qab haus huv thiab kev kho mob suav nrog nws ua ib yam khoom siv hauv kev hloov pauv ntawm lub duav thiab cov tshuaj tiv thaiv kev yug menyuam. Nws yog siv ua scintillator thiab dosimeter rau kev tiv thaiv hluav taws xob thiab kev siv kho mob rau nws cov khoom siv luminescence optically stimulated. Kev rwb thaiv tsev rau cov cub tawg kub siab feem ntau yog tsim los ntawm aluminium oxide. Cov khoom me me ntawm aluminium oxide feem ntau yog siv ua cov khoom kub npau npau hauv chemistry. Nws kuj tseem siv los ua cov hluav taws xob hluav taws xob. Siv cov txheej txheem plasma tsuag thiab sib xyaw nrog titania, nws yog coated rau ntawm qhov chaw nres tsheb ntawm qee lub tsheb kauj vab rims los muab kev puas tsuaj thiab hnav tsis kam. Feem ntau cov qhov muag ceramic ntawm cov pas nrig nuv ntses yog cov nplhaib puag ncig ua los ntawm aluminium oxide. Hauv nws daim ntawv hmoov zoo tshaj plaws (dawb), hu ua Diamantine, txhuas oxide yog siv los ua cov khoom siv txhuam zoo tshaj plaws hauv kev ua moos thiab kev ua moos. Aluminium oxide kuj tseem siv rau hauv kev txheej ntawm cov stanchions hauv kev lag luam motorcross thiab roob tsheb kauj vab. Cov txheej no yog ua ke nrog molybdenum disulfate los muab lubrication ntev ntawm qhov chaw.
