Aluminum oxide alpha-phase 99.999% (metala kumu)
| AluminumOxide | |
| Helu CAS | 1344-28-1 |
| ʻO ke kumu hoʻohālike | Al2O3 |
| Molar mass | 101.960 g · mol −1 |
| Ka nana aku | paʻa keʻokeʻo |
| ʻala | ʻala ʻole |
| ʻO ka mānoanoa | 3.987g/cm3 |
| Lae hehee | 2,072°C(3,762°F;2,345K) |
| Lae paila | 2,977°C(5,391°F;3,250K) |
| Solubility i ka wai | hiki ole ke hooheheeia |
| Ka hikiwawe | hiki ole ke hooheheeia |
| logP | 0.3186 |
| Hiki ke hoʻopaʻa ʻia (χ) | −37.0×10−6cm3/mol |
| ʻO ke kau wela wela | 30W·m−1·K−1 |
Hōʻikeʻike ʻoihana noAluminum Oxide
| hōʻailona | CrystalʻAno hoʻolālā | Al2O3≥(%) | Moena haole.≤(%) | Ka nui o ka ʻāpana | ||
| 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 |
Hoʻopili: hoʻopaʻa ʻia i loko o ka bākeke a hoʻopaʻa ʻia i loko e ka cohesion ethene, ʻo ke kaumaha o ka ʻupena he 20 kilokani i kēlā me kēia bākeke.
He aha ka mea e hoʻohana ai i ka Aluminum Oxide?
Alumina (Al2O3)lawelawe ʻo ia ma ke ʻano he mea maka no ka laulā o nā huahana seramika kiʻekiʻe a ma ke ʻano he mea hana ikaika i ka hana kemika, me nā adsorbents, catalysts, microelectronics, chemicals, aerospace industry, a me nā wahi ʻenehana kiʻekiʻe. Hiki ke hāʻawi aku nā hiʻohiʻona kiʻekiʻe o ka alumina i mea kūpono no ka hoʻohana ʻana i nā noi he nui. ʻO kekahi o nā noi maʻamau ma waho o ka hana alumini i helu ʻia ma lalo nei. Nā mea hoʻopiha. Ma muli o ke keʻokeʻo inert a keʻokeʻo, ʻo ka alumini oxide kahi mea hoʻopiha punahele no nā plastics. ʻO ke aniani.ʻO ka nui o nā hana aniani i loaʻa ka alumini oxide ma ke ʻano he mea hoʻohui. Catalysis Aluminum oxide catalyses nā ʻano ʻano like ʻole e pono ai ka ʻoihana. Hoʻomaʻemaʻe kinoea. Hoʻohana nui ʻia ka alumini oxide e wehe i ka wai mai nā kahawai kinoea. Abrasive. Hoʻohana ʻia ka alumini oxide no ka paʻakikī a me ka ikaika. Pena. Hoʻohana ʻia nā ʻōpala alumini oxide i ka pena no nā hopena hoʻonaninani. fiber hui. Ua hoʻohana ʻia ka alumini oxide i kekahi mau mea hoʻokolohua a me nā mea pāʻoihana fiber no nā noi hana kiʻekiʻe (e laʻa, Fiber FP, Nextel 610, Nextel 720). ʻO ka pale kino. Hoʻohana kekahi mau mea pale kino i nā papa alumina seramika, i hui pū ʻia me ke kākoʻo aramid a i ʻole UHMWPE e hoʻokō pono ai i ka hapa nui o nā hoʻoweliweli raifela. Pale abrasion. Hiki ke ulu i ka alumini oxide e like me ka uhi ʻana ma luna o ka alumini ma o ka anodizing a i ʻole e ka plasma electrolytic oxidation. Hoʻomoe uila. ʻO ka alumini oxide he insulator uila i hoʻohana ʻia ma ke ʻano he substrate (silicon on sapphire) no nā kaapuni i hoʻohui ʻia akā ma ke ʻano he pale tunnel no ka hana ʻana i nā mea hana superconducting e like me nā transistors electron hoʻokahi a me nā mea hoʻohālikelike quantum superconducting (SQUIDs).
Aluminum Oxide, ʻo ia ka dielectric me ka nui o ke kaʻe hui, hoʻohana ʻia ma ke ʻano he pale insulating i nā capacitors. I ke kukui, hoʻohana ʻia ka translucent alumini oxide i kekahi mau kukui mahu sodium. Hoʻohana pū ʻia ka alumini oxide i ka hoʻomākaukau ʻana i nā mea hoʻopaneʻe uhi i nā kukui fluorescent compact. I loko o nā laboratories kemika, ʻo ka alumini oxide he mea ia no ka chromatography, i loaʻa ma ke kumu (pH 9.5), acidic (pH 4.5 inā i loko o ka wai) a me nā mea hoʻohālikelike kū ʻole. Hoʻokomo ʻia nā noi olakino a me nā lāʻau lapaʻau ma ke ʻano he mea i loko o nā pani pani a me nā lāʻau hoʻomalu hānau. Hoʻohana ʻia ia ma ke ʻano he scintillator a me ka dosimeter no ka pale ʻana i ka radiation a me nā noi lapaʻau no kāna mau waiwai luminescence optically stimulated. Hana pinepine ʻia ka insulation no nā umu wela wela mai ka alumini oxide. Hoʻohana pinepine ʻia nā ʻāpana liʻiliʻi o ka alumini oxide ma ke ʻano he paila paila i ka kemika. Hoʻohana ʻia ia e hana i nā insulators plug spark plug. Ke hoʻohana nei i kahi kaʻina hana hoʻoheheʻe plasma a hui pū ʻia me ka titania, ua uhi ʻia ma luna o ka ʻili o nā kaʻa uila e hāʻawi i ka abrasion a me ke kūpaʻa. ʻO ka hapa nui o nā maka seramika ma nā koʻokoʻo lawaiʻa he mau apo pōʻai i hana ʻia mai ka alumini oxide. Ma kona ʻano pauda (keʻokeʻo) maikaʻi loa, i kapa ʻia ʻo Diamantine, hoʻohana ʻia ka alumini oxide ma ke ʻano he mea hoʻoliʻiliʻi maikaʻi loa i ka hana wati a me ka hana uaki. Hoʻohana pū ʻia ka alumini oxide i ka uhi ʻana o nā stanchions ma ke keʻa kaʻa a me ka ʻoihana keke mauna. Hoʻohui ʻia kēia uhi me ka molybdenum disulfate e hāʻawi i ka lubrication lōʻihi o ka ʻili.
