ʻO ka alumini oxide alpha-phase 99.999% (kumu metala)
| ʻOkiuma Aluminum | |
| Helu CAS | 1344-28-1 |
| ʻO ke ʻano kemika | Al2O3 |
| Ka nuipa molar | 101.960 g · mol −1 |
| helehelena | keʻokeʻo paʻa |
| ʻAla | ʻala ʻole |
| Ka nui o ka paʻa | 3.987g/cm3 |
| Kiko heheʻe | 2,072°C(3,762°F;2,345K) |
| Kikowaena paila | 2,977°C(5,391°F;3,250K) |
| Ka hoʻoheheʻe ʻia ʻana i ka wai | hiki ʻole ke hoʻoheheʻe ʻia |
| Ka hiki ke hoʻoheheʻe ʻia | hiki ʻole ke hoʻoheheʻe ʻia i nā mea hoʻoheheʻe āpau |
| logP | 0.3186 |
| Ka hiki ke hoʻopilikia ʻia e ka makeneka (χ) | −37.0×10−6cm3/mol |
| Ka hoʻokele wela | 30W·m−1·K−1 |
Nā kikoʻī ʻoihana noʻOkika Alumini
| Hōʻailona | CrystalʻAno Kūkulu | 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 ʻia: i hoʻopaʻa ʻia i loko o ka bākeke a hoʻopaʻa ʻia i loko e ka cohesion ethene, ʻo ke kaumaha o ka ʻupena he 20 kilogram no kēlā me kēia bākeke.
He aha ka mea i hoʻohana ʻia ai ka Aluminum Oxide?
ʻAlumina (Al2O3)lawelawe ʻo ia ma ke ʻano he mea maka no kahi ākea o nā huahana keramika holomua a ma ke ʻano he mea hana i ka hana kemika, me nā adsorbents, catalysts, microelectronics, chemicals, aerospace industry, a me nā wahi ʻenehana kiʻekiʻe ʻē aʻe. ʻO nā ʻano kiʻekiʻe o ka alumina e hiki ke hāʻawi e kūpono ia no ka hoʻohana ʻana i nā noi he nui. Aia kekahi o nā noi maʻamau ma waho o ka hana alumini ma lalo nei. Nā mea hoʻopihapiha. ʻOiai he inert chemically a keʻokeʻo, ʻo ka alumini oxide kahi mea hoʻopihapiha makemake ʻia no nā plastics. Aniani. Nui nā ʻano o ke aniani i loaʻa ka alumini oxide ma ke ʻano he mea hoʻohui. Catalysis Hoʻopili ka alumini oxide i nā ʻano hopena 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 kona paʻakikī a me kona ikaika. Pena. Hoʻohana ʻia nā ʻāpana alumini oxide i ka pena no nā hopena hoʻonaninani noʻonoʻo. Fiber composite. Ua hoʻohana ʻia ka alumini oxide i kekahi mau mea fiber hoʻokolohua a me nā mea kalepa no nā noi hana kiʻekiʻe (e laʻa, Fiber FP, Nextel 610, Nextel 720). ʻO ke kapa kila kino. Hoʻohana kekahi mau kapa kila kino i nā papa keramika alumina, maʻamau i ka hui pū ʻana me ke kākoʻo aramid a i ʻole UHMWPE e hoʻokō i ka pono e kūʻē i ka hapa nui o nā hoʻoweliweli pū. Palekana abrasion. Hiki ke ulu ʻia ka alumini oxide ma ke ʻano he uhi ma luna o ka alumini ma o ka anodizing a i ʻole ka plasma electrolytic oxidation. Hoʻopaʻa uila. ʻO ka alumini oxide kahi insulator uila i hoʻohana ʻia ma ke ʻano he substrate (silicon ma ka sapphire) no nā kaapuni i hoʻohui ʻia akā ma ke ʻano he pale tunnel no ka hana ʻana o nā mea superconducting e like me nā transistors electron hoʻokahi a me nā mea hoʻopilikia quantum superconducting (SQUIDs).
ʻOkika Alumini, ʻoiai he dielectric me kahi ākea band nui, hoʻohana ʻia ia ma ke ʻano he pale insulating i loko o nā capacitors. I ke kukui ʻana, hoʻohana ʻia ka alumini oxide translucent i kekahi mau kukui sodium vapor. Hoʻohana ʻia hoʻi ka alumini oxide i ka hoʻomākaukau ʻana i nā hoʻokuʻu uhi i loko o nā kukui fluorescent compact. I loko o nā kemika kemika, ʻo ka alumini oxide kahi medium no ka chromatography, loaʻa i nā ʻano kumu (pH 9.5), acidic (pH 4.5 i ka wā i loko o ka wai) a me nā ʻano kūlike ʻole. Hoʻokomo pū ʻia nā noi olakino a me nā lāʻau lapaʻau iā ia ma ke ʻano he mea i loko o nā pani hip a me nā pila hoʻomalu hānau. Hoʻohana ʻia ia ma ke ʻano he scintillator a me dosimeter no ka pale ʻana i ka radiation a me nā noi therapy no kona mau waiwai luminescence i hoʻoulu ʻia e ka optically. Hana pinepine ʻia ka insulation no nā umu wela kiʻekiʻe mai ka alumini oxide. Hoʻohana pinepine ʻia nā ʻāpana liʻiliʻi o ka alumini oxide e like me nā ʻāpana paila i ka kemika. Hoʻohana ʻia hoʻi e hana i nā insulators plug spark. Ma ka hoʻohana ʻana i kahi kaʻina hana plasma spray a hui pū ʻia me ka titania, ua uhi ʻia ma luna o ka ʻili braking o kekahi mau rims paikikala e hāʻawi i ka abrasion a me ke kū'ē ʻana i ka ʻaʻahu. ʻO ka hapa nui o nā maka keramika ma nā koʻokoʻo lawaiʻa he mau apo poepoe i hana ʻia mai ka alumini oxide. Ma kona ʻano pauka maikaʻi loa (keʻokeʻo), i kapa ʻia ʻo Diamantine, hoʻohana ʻia ka alumini oxide ma ke ʻano he mea hoʻomaʻemaʻe poli maikaʻi loa i ka hana ʻana i nā uaki a me ka hana ʻana i nā uaki. Hoʻohana pū ʻia ka alumini oxide i ka uhi ʻana o nā stanchions i ka ʻoihana keʻa kaʻa a me ke kaʻa paikikala mauna. Hoʻohui ʻia kēia uhi me ka molybdenum disulfate e hāʻawi i ka lubrication lōʻihi o ka ʻili.
