I-Aluminium oxide alpha-phase 99.999% (isisekelo sezinsimbi)
| I-aluminiumOxide | |
| Inombolo ye-CAS | 1344-28-1 |
| Ifomula yamakhemikhali | Al2O3 |
| I-Molar mass | 101.960 g · mol −1 |
| Ukubukeka | okuqinile okumhlophe |
| Iphunga | engenaphunga |
| Ukuminyana | 3.987g/cm3 |
| Iphoyinti lokuncibilika | 2,072°C(3,762°F;2,345K) |
| Iphuzu elibilayo | 2,977°C(5,391°F;3,250K) |
| Ukuncibilika emanzini | engancibiliki |
| Ukuncibilika | engancibiliki kuzo zonke izincibilikisi |
| logP | 0.3186 |
| Ukuba sengozini kazibuthe(χ) | −37.0×10−6cm3/mol |
| I-Thermal conductivity | 30W·m−1·K−1 |
Ukucaciswa kwebhizinisi kweI-aluminium oxide
| Uphawu | IkristaluUhlobo Lwesakhiwo | Al2O3≥(%) | I-Foreign Mat.≤(%) | Usayizi Wezinhlayiyana | ||
| 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 |
Ukupakisha: kupakishwe ebhakedeni futhi kuvalwe ngaphakathi nge-cohesion ethene, isisindo senetha singamakhilogremu angama-20 ibhakede ngalinye.
Isetshenziselwani i-Aluminium oxide?
I-Alumina (Al2O3)isebenza njengempahla eluhlaza yohlu olubanzi lwemikhiqizo yobumba ethuthukisiwe futhi njenge-ejenti esebenzayo ekucutshungulweni kwamakhemikhali, okuhlanganisa ama-adsorbent, ama-catalysts, ama-microelectronics, amakhemikhali, imboni ye-aerospace, kanye nezinye izindawo zobuchwepheshe obuphezulu.Izici eziphakeme ze-alumina ezinganikeza ziyenza ilungele ukusetshenziswa ezinhlelweni eziningi.Ezinye zezinhlelo zokusebenza ezivame kakhulu ngaphandle kokukhiqizwa kwe-aluminium zibalwe ngezansi.Okugcwalisa.Njengoba inert futhi imhlophe ngamakhemikhali, i-aluminium oxide iyisigcwalisi esithandwayo samapulasitiki.Ingilazi.Izinhlobo eziningi zengilazi zine-aluminium oxide njengesithako.I-Catalysis I-Aluminium oxide idala ukusabela okuhlukahlukene okuwusizo ezimbonini.Ukuhlanzwa kwegesi.I-Aluminium oxide isetshenziswa kakhulu ukususa amanzi emifudlaneni yegesi.I-Abrasive.I-aluminium oxide isetshenziselwa ubulukhuni namandla ayo.Penda.Ama-flakes e-aluminium oxide asetshenziswa kupende ngemiphumela yokuhlobisa ekhanyayo.I-fiber ehlanganisiwe.I-Aluminium oxide isetshenziswe ezintweni ezimbalwa zokuhlola nezokuhweba zefayibha yezinhlelo zokusebenza ezisebenza kahle (isb, i-Fiber FP, i-Nextel 610, i-Nextel 720).Izivikelo zomzimba.Ezinye izikhali zempi zisebenzisa amapuleti e-alumina ceramic, ngokuvamile ahlanganiswe ne-aramid noma i-UHMWPE esekelwe ukuze kuzuzwe ukusebenza kahle ngokumelene nezinsongo eziningi zezibhamu.Ukuvikela umhuzuko.I-Aluminium oxide ingakhuliswa njengenamathela ku-aluminium ngokufaka i-anodizing noma nge-plasma electrolytic oxidation.Ukufakwa kukagesi.I-Aluminium oxide iyisivikeli sikagesi esisetshenziswa njenge-substrate (i-silicon kusafire) kumasekethe ahlanganisiwe kodwa futhi njengesivimbelo somhubhe wokwenziwa kwezinto ezisebenza kahle kakhulu njengama-electron transistors angawodwa kanye namadivayisi e-superconducting quantum interference (SQUIDs).
I-aluminium oxide, ngokuba yi-dielectric enegebe elikhulu ngokuqhathaniswa nebhendi, isetshenziswa njengesithiyo sokuvikela ama-capacitor.Ekukhanyeni, i-aluminiyamu oxide eguquguqukayo isetshenziswa kwezinye izibani ze-sodium vapor.I-Aluminium oxide isetshenziswa futhi ekulungiseleleni ukumiswa kokumboza kumalambu ahlanganisiwe we-fluorescent.Kulabhorethri yekhemistri, i-aluminium oxide iyisisetshenziswa se-chromatography, etholakala ngokuyisisekelo (pH 9.5), ene-asidi (pH 4.5 uma isemanzini) kanye nokwakheka okuphakathi nendawo.Impilo kanye nezicelo zezokwelapha zihlanganisa njengempahla ekufakweni kwe-hip kanye namaphilisi okulawula ukuzalwa.Isetshenziswa njenge-scintillator kanye ne-dosimeter yokuvikela imisebe kanye nezicelo zokwelapha zezakhiwo zayo ze-luminescence ezivuselelwe ngokubonakalayo.I-insulation yezithando zokushisa eziphezulu ngokuvamile ikhiqizwa nge-aluminium oxide.Izingcezu ezincane ze-aluminium oxide zivame ukusetshenziswa njengama-chips abilayo kukhemistri.Iphinde isetshenziselwe ukwenza i-spark plug insulators.Kusetshenziswa inqubo yesifutho se-plasma futhi exutshwe ne-titania, simbozwa endaweni yokubhuleka kwamanye amarimu ebhayisikili ukuze kuhlinzekwe imihuzuko nokumelana nokuguga.Amehlo amaningi e-ceramic ezintini zokudoba amasongo ayindilinga enziwe nge-aluminium oxide.Ngendlela yayo eyimpushana (emhlophe), ebizwa ngokuthi i-Diamantine, i-aluminium oxide isetshenziswa njenge-abrasive ecwebezelayo esezingeni eliphezulu ekwenzeni amawashi nasekwenzeni amawashi.I-Aluminium oxide isetshenziswa futhi ekuhlanganisweni kwama-stanchions embonini ye-motor cross kanye ne-mountain bike.Lokhu kuhlanganiswa kuhlanganiswe ne-molybdenum disulfate ukuze kunikeze ukugcotshwa kwesikhathi eside kwendawo.
