ʻO ka Alpha-alumina he mau waiwai kemika paʻa, kūpaʻa i ka corrosion, paʻakikī kiʻekiʻe, nā waiwai insulation maikaʻi, kiʻekiʻe heheʻe a me ka paʻakikī kiʻekiʻe, a hoʻohana ʻia i nā kula like ʻole.
Ka hoʻohana ʻana i ka pauka α-alumina i nā seramika
ʻO ka microcrystalline alumina ceramics kahi ʻano hou o nā mea seramika me ka ʻano like ʻole a me ka paʻa a me ka nano a i ʻole ka sub-micron grain size. Loaʻa iā ia nā mea maikaʻi o ka ikaika mechanical kiʻekiʻe, ke kūpaʻa ʻana, ke kūpaʻa ʻana i ka corrosion, ka pale ʻana o ka oxidation, ka hoʻonui hoʻololi ʻana a me ka paʻa wela maikaʻi. ʻO kāna hiʻohiʻona nui he liʻiliʻi ke aniani mua. No laila, ʻo ke kūlana ʻenehana koʻikoʻi no ka hoʻomākaukau ʻana i nā ceramics microcrystalline alumina ʻo ia ka hoʻomākaukau ʻana i ka pauka α-Al2O3 me ke aniani kumu liʻiliʻi a me ka hana sintering kiʻekiʻe. Hiki i kēia pauka α-Al2O3 ke lilo i kino seramika paʻa i kahi mahana sintering haʻahaʻa.
Ka hoʻohana ʻana i ka pauka α-alumina i loko o nā mea refractory
ʻOkoʻa ka pauka α-Al2O3 i nā mea refractory e like me ka noi, a ʻokoʻa hoʻi nā koi o ka pauka. No ka laʻana, inā makemake ʻoe e wikiwiki i ka densification o nā mea refractory, ʻo nano-alumina ke koho maikaʻi loa; inā makemake ʻoe e hoʻomākaukau i nā refractory ʻano, pono ʻoe i ka pauka α-Al2O3 me nā kīʻaha coarse, liʻiliʻi liʻiliʻi, a me ke kūpaʻa deformation ikaika. ʻOi aku ka maikaʻi o nā crystallites flake a i ʻole nā papa; akā, inā he amorphous refractory mea, α-Al2O3 pono e loaʻa i ka maikaʻi fluidity, kiʻekiʻe sintering hana, a me ka puunaue ana nui koi i ka nui bulk density, a me ka maikai-grained crystallites oi aku.
Ka hoʻohana ʻana i ka pauka α-alumina i nā mea polishing
Pono nā palapala hoʻoliʻiliʻi like ʻole. ʻO nā huahana no ka polishing a me ka polishing waena e koi i ka ikaika ʻoki ikaika a me ka paʻakikī kiʻekiʻe, no laila e koi ʻia kā lākou microstructure a me nā crystals i ke koʻikoʻi; ʻO ka pauka α-alumina no ka hoʻoliʻiliʻi maikaʻi ʻana e pono i ka huahana i poni ʻia he haʻahaʻa haʻahaʻa o ka ʻili a me ke aniani kiʻekiʻe No laila, ʻoi aku ka liʻiliʻi o ka aniani mua o α-Al2O3, ʻoi aku ka maikaʻi.
Ka hoʻohana ʻana i ka pauka α-alumina i ka mea hoʻopihapiha
I ka mea hoʻopihapiha hoʻopihapiha, i mea e hōʻoia ai e hui maikaʻi me nā mea organik a hoʻemi i ka hopena i ka viscosity o ka ʻōnaehana, ʻo ka mea pono loa no ka α-Al2O3 ʻo ia ka maikaʻi o ka wai, ʻoi aku ka spherical, no ka mea ʻoi aku ka kiʻekiʻe o ka sphericity, ka ʻili. ʻO ka liʻiliʻi o ka ikehu, ʻoi aku ka maikaʻi o ka wai o ka ʻili o ka pōleʻa; ʻO ka lua, ʻo ka pauka α-Al2O3 me ka hoʻomohala piha ʻana i ke aniani, ka hoʻomaʻemaʻe kemika kiʻekiʻe a me ka ʻumekaumaha kikoʻī kiʻekiʻe i ʻoi aku ka maikaʻi o ka thermal conductivity a me ka hopena maikaʻi ke hoʻohana ʻia no ka insulating a me ka thermally conductive material.
Ka hoʻohana ʻana i ka pauka α-alumina i loko o ka mea capacitor corundum
Ma ka ʻoihana, hoʻomaʻamaʻa pinepine ʻia ka pauka α-alumina maʻemaʻe i loko o kahi umu uila kiʻekiʻe e hana i ka corundum artificial, ʻike ʻia hoʻi ʻo fused corundum. Loaʻa i kēia mea nā hiʻohiʻona o ka paʻakikī kiʻekiʻe, nā ʻaoʻao a me nā kihi, a ʻoi aku ka maikaʻi o ka microstructure kokoke i spherical. I ke kaʻina hana o ka wili kiʻekiʻe, ʻo ka ʻōpala abrasive he ikaika ʻokiʻoki ikaika, a ʻaʻole maʻalahi ka haki ʻana o ka ʻōpala abrasive.