Njirimara na ngwa nke nnukwu ihe alumina

Alumina (usoro kemịkalụ Al₂O₃) bụ ihe dị mkpa inorganic na-abụghị{0}ọla ọla nwere ọmarịcha anụ ahụ na kemịkal. A na-eji ya n'ọtụtụ ebe na ụlọ ọrụ, ngwá electronic, ọgwụ na mpaghara ndị ọzọ. Ụdị ihe dị n'ime ya gụnyere -alumina na -alumina, na ụdị kristal dị iche iche nke alumina na-egosipụta nnukwu ọdịiche na akụrụngwa na ngwa.

Ụdị isi nke ihe alumina

1. -Alumina (Corundum)

{{0}Alumina bụ kristal kacha kwụsie ike nke alumina ma bụrụ akụkụ bụ isi nke corundum eke (dị ka ruby ​​​​na sapphire). Ọ nwere usoro kristal dị oke, ike siri ike (Mohs hardness 9), ebe mgbaze dị elu dị ka ogo 2050, yana nkwụsi ike kemịkalụ siri ike na nguzogide corrosion magburu onwe ya. N'ihi ihe ndị a, -alumina ka a na-eji eme ihe n'ọtụtụ ebe{6}} ihe ndị na-eguzogide ọgwụ, ihe eji egbutu seramiiki, ihe ndị na-eme ka okpomọkụ dị elu-, na nhịahụ ziri ezi.

{{0}Alumina

-Alumina bụ oghere aluminom oxide dị elu- elu{2} nke na-emepụtakarị site na calcining aluminum hydroxide. Ọdịdị kristal ya na-adịghị ahụkebe na-enye ọmarịcha mgbasa ozi na ọrụ catalytic, na-eme ka a na-ejikarị ya eme ihe na nkwado, gas adsorbents, na batrị lithium na-ekesa {{4}Alumina nwekwara ngwa dị mkpa na ceramik, ihe na-egbuke egbuke na ubi ndị ọzọ.

Ngwa isi nke alumina

1. Ceramics ụlọ ọrụ

A na-eji seramiki alumina, n'ihi ike ha dị elu, isi ike, na elu{0}} okpomọkụ na-eguzogide, na-eji ọtụtụ ebe n'ichepụta igwe akàrà, wear {1} eguzogide liners, na eletrọnịkị substrates {

2. Eletrọnịkị na Semiconductors

Alumina dị elu- dị elu (n'elu 99.9%) bụ akụrụngwa akụrụngwa maka nrụpụta nke ihe nrụpụta sekit agbakwunyere, ceramik mkpuchi, na ihe nkwakọba LED. Ihe mkpuchi ya magburu onwe ya na conductivity thermal na-eme ka ọ bụrụ ihe dị mkpa na ụlọ ọrụ eletrọnịkị.

3. Medical na ọla

Isi ike nke alumina na-eme ka ọ bụrụ ihe dị mma maka nkwonkwo aka na ntinye eze, ebe rubies na sapphires (kristal alumina eke) na-eji ọla dị elu{0}} maka ịma mma na ịdịte aka ha.

Mmechi

Alumina, ihe na-agbanwe agbanwe, na-arụ ọrụ dị mkpa na mpaghara dị iche iche, gụnyere ụlọ ọrụ, ngwá electronic, na ọgwụ, n'ihi ụdị kristal dị iche iche. Site n'ọganihu na sayensị akụrụngwa, oghere nke ngwa alumina ga-aga n'ihu na-agbasawanye, ọkachasị n'ihe gbasara ike ọhụrụ, nchekwa gburugburu ebe obibi, na nrụpụta teknụzụ dị elu{{1}, ebe mkpa ya ga-apụtawanye nke ọma.