ʻO ka pauka alumina a me ka mana alumina α-type
ʻElima mau hiʻohiʻona o ka pauka alumina kiʻekiʻe
1. Ke kū'ē kemika;
2. ʻO ka alumina maʻemaʻe kiʻekiʻe, ʻoi aku ka nui o ka alumina ma mua o 99%;
3. ʻO ke kūpaʻa wela kiʻekiʻe, hoʻohana maʻamau ma 1600 ℃, pōkole 1800 ℃;
4. Kū'ē i ke anuanu a me ka wela,ʻaʻole maʻalahi ke pohā;
5. Hoʻohana ia i ka grouting a he kiʻekiʻe kiʻekiʻe.
1. Hoʻohana i ka pauka alumina α-type
I loko o ka lattice aniani o ka pauka alumina α-type, ua hoʻopili ʻia nā ion oxygen i nā hexagons, a ua puʻunaue like ʻia ʻo Al3+ i loko o ke kikowaena hoʻonohonoho octahedral i hoʻopuni ʻia e nā ion oxygen.Nui loa ka ikehu lattice, no laila kiʻekiʻe loa ka helu heheʻe a me ka helu hoʻolapalapa.α-type oxidation ʻAʻole hiki ke hoʻoheheʻe ʻia ka alumini i ka wai a me ka waika.Ua kapa ʻia ʻo ia ka alumini oxide ma ka ʻoihana.ʻO ia ke kumu kumu no ka hana ʻana i ke alumini metala;Hoʻohana ʻia ia e hana i nā pōhaku ʻokoʻa refractory, refractory crucibles, refractory tubes, a me nā mea hoʻāʻo wela kiʻekiʻe;hiki ke hoʻohana ʻia e like me nā abrasives a me nā mea pale ahi.Nā Agena, nā mea hoʻopihapiha, a me nā mea'ē aʻe;ʻO ka alumina α-type hoʻomaʻemaʻe kiʻekiʻe ka mea maka no ka hana ʻana i ka corundum artificial, artificial ruby a me sapphire;hoʻohana pū ʻia no ka hana ʻana i nā kaapuni hoʻohui nui o kēia wā.
Loaʻa i ka alumina i hoʻāla ʻia ka mana adsorption koho no ke kinoea, ka mahu wai a me kekahi wai wai.Ma hope o ka hoʻopihaʻiaʻana o ka adsorption, hiki ke ho'ōla houʻia ma ka hoʻomehanaʻana ma kahi o 175-315 ° C e wehe i ka wai.Hiki ke hana ʻia ka Adsorption a me ke ala hou ʻana i nā manawa he nui.Ma waho aʻe o ka hoʻohana ʻia e like me ka desiccant, hiki iā ia ke adsorb i ka mahu o ka ʻaila lubricating mai ka oxygen haumia, hydrogen, carbon dioxide, kūlohelohe kino, etc.
