Nā ʻano a me nā hoʻohana ʻana o nā mea alumina nui

ʻO ka alumina (ke kumu kemika Al₂O₃) he mea koʻikoʻi koʻikoʻi ʻole-metala me nā waiwai kino a me nā waiwai kemika. Hoʻohana nui ʻia ia i ka ʻoihana, uila, lāʻau lapaʻau, a me nā ʻoihana ʻē aʻe. ʻO kona ʻano mea nui he -alumina a me -alumina, a ʻo nā ʻano aniani like ʻole o ka alumina e hōʻike ana i nā ʻokoʻa koʻikoʻi i nā waiwai a me nā noi.

Nā ʻano nui o nā mea alumina

1. -Alumina (Corundum)

-ʻO ka alumina ka ʻano aniani paʻa loa o ka alumina a ʻo ia ka mea mua o ka corundum maoli (e like me ka ruby ​​​​a me ka sapphire). Loaʻa iā ia kahi ʻano aniani ʻeleʻele, paʻakikī kiʻekiʻe (Mohs hardness 9), kahi helu hoʻoheheʻe kiʻekiʻe e like me 2050 degere, a me ka paʻa kemika ikaika loa a me ke kūpaʻa maikaʻi loa. Ma muli o kēia mau waiwai, ho'ohana nui 'ia ka -alumina i nā mea 'a'ahu-kū'ole, nā mea hana 'oki'oki ki'eki'e,-mea wela wela, a me nā mea pa'a pololei.

2. -Alumina

-O ka alumina he alumini oxide kiʻekiʻe, ʻeleʻele a kiʻekiʻe i hana ʻia e ka calcining alumini hydroxide. Hāʻawi ʻia kona ʻano aniani ʻeleʻele i ka adsorption maikaʻi loa a me ka hana catalytic, no laila e hoʻohana mau ʻia ia i nā kākoʻo catalyst, nā adsorbents kinoea, a me nā mea hoʻokaʻawale pākahi lithium . -Alumina kekahi mau mea nui i nā seramika, nā mea poni, a me nā kula ʻē aʻe.

Nā noi nui o ka alumina

1. Nā Seramika ʻOihana

Hoʻohana nui ʻia nā mea alumina, ma muli o ko lākou ikaika kiʻekiʻe, ʻoʻoleʻa, a me ke kūpaʻa kiʻekiʻe -mamahana, i ka hana ʻana i nā sila mechanical, nā laina -ʻaʻahu, a me nā substrate uila. -Ke hōʻike ʻia nei nā alumina ceramics i ke kūpaʻa kūʻokoʻa, ʻo ia hoʻi i nā kaiapuni wela -kiʻekiʻe.

2. Electronics a me Semiconductors

ʻO ka alumina hoʻomaʻemaʻe kiʻekiʻe (ma luna o 99.9%) he kumu kumu nui no ka hana ʻana i nā substrate kaapuni i hoʻohui ʻia, insulating ceramics, a me nā mea hoʻopihapiha LED. ʻO kāna insulation maikaʻi loa a me ka conductivity thermal e lilo ia i mea waiwai nui i ka ʻoihana uila.

3. Lapaau a me na mea nani

ʻO ka paʻakikī o ka alumina he mea kūpono ia no nā hono a me nā mea hoʻokomo niho, aʻo nā rubi a me nā sapphire (nā kristal alumina maoli) i hoʻohana ʻia i nā mea nani -kiʻekiʻe no ko lākou nani a paʻa.

Ka hopena

He mea koʻikoʻi ka alumina ma nā ʻano hana like ʻole, me ka ʻoihana, ka uila, a me ka lāʻau lapaʻau, mahalo i kāna mau ʻano aniani like ʻole. Me ka holomua o ka ʻepekema waiwai, e hoʻonui mau ana ka laulā o nā noi alumina, ʻoi aku ka nui o ka ikehu hou, ka hoʻomalu ʻana i ke kaiapuni, a me ka ʻenehana kiʻekiʻe -ʻenehana, kahi e ʻike nui ʻia ai kona koʻikoʻi.