ʻO ka alumina ceramic kahi ʻano alumina (Al2O3) ma ke ʻano he kumu nui, hoʻohana ʻia i loko o ke kaapuni hoʻohui kiʻi ʻoniʻoni mānoanoa.Loaʻa i nā seramika alumina ka conductivity maikaʻi, ka ikaika mechanical a me ke kūpaʻa wela kiʻekiʻe.
Hoʻokaʻawale ʻia nā seramika alumina i ʻelua ʻano: maʻemaʻe kiʻekiʻe a maʻamau.ʻOi aku ka nui o ka alumina maʻemaʻe kiʻekiʻe ma mua o 99.9% Al2O3 maʻiʻo o nā mea seramika, no ka mea o kāna sintering wela a hiki i 1650-1990 ℃, ka lōʻihi o ka hawewe o 1 ~ 6μm, hana maʻamau i ke aniani hoʻoheheʻe e hoʻololi i ka platinum crucible.Ma muli o kona māmā transmittance a me ke kū'ē i ka alkali metala corrosion, hiki ke hoʻohana ʻia e like me ka sodium lamp tube, i loko o ka ʻoihana uila hiki ke hoʻohana ʻia e like me ka papa kaapuni i hoʻohui ʻia a me nā mea insulation kiʻekiʻe.
Hoʻokaʻawale ʻia nā seramika alumina maʻamau i 99 porcelain, 95 porcelain, 90 porcelain, 85 porcelain a me nā ʻano ʻē aʻe e like me ka Al2O3 maʻiʻo, i kekahi manawa Al2O3 maʻiʻo i 80% a i ʻole 75% i manaʻo ʻia he moʻo alumina ceramic maʻamau.I waena o lākou, 99 alumina ceramic mea i hoʻohana 'ia e hana kiʻekiʻe wela crucible, kapuahi paipu a me ka kūikawā lole-kūpono mea, e like me ka ceramic bearings, ceramic sila a me ka wai kiwikā, etc. ʻāpana;Hoʻohui pinepine ʻia nā mea alumina ceramic me kahi hapa o ka talc, hoʻomaikaʻi i nā waiwai uila a me ka ikaika mechanical, a hiki ke hoʻopaʻa ʻia me ka molybdenum, niobium, tantalum a me nā metala ʻē aʻe, hoʻohana ʻia kekahi e like me nā mea uila uila.
Ka manawa hoʻouna: Apr-28-2022