Gịnị bụ isi mgwa ihe corundum?

Akụkụ bụ isi nke corundum bụ aluminum oxide.

corundum, aha sitere na India, bu aha mineral. Enwere isi ihe atọ dị iche iche nke ịdị n’otu nke corundum Al2O3, ya bụ α-Al2O3, β-Al2O3, na γ-Al2O3. Isi ike nke corundum bụ nke abụọ na naanị diamond.

Corundum bụ nkume bara nnukwu uru nke kpụrụ si na kristal nke alumina (Al2O3). Corundum agwakọta ya na chromium dara na-acha uhie uhie na-acha uhie uhie ma a na-akpọkarị ruby; ebe corundum na-acha anụnụ anụnụ ma ọ bụ nke na-enweghị agba na-ekewakarị dị ka sapphire.

Corundum nọ n’ọkwa 9th na tebụl ike nke Mohs. Ike ndọda a kapịrị ọnụ bụ 4.00, yana o nwekwara owuwu lattice kọlụm hexagonal. N’ihi ike ya na ọnụ ala dị ala karịa diamond, corundum aghọwo ihe dị mma maka akwụkwọ aja na ihe egweri.

Corundum nwere enyo enyo, ike 9. Nkezi bụ 3.95-4.10. Ọ na-etolite n’okpuru ọnọdụ nke elu okpomọkụ, ọgaranya aluminum na ogbenye silicon C, na tumadi metụtara magmatism, kọntaktị metamorphism na mpaghara metamorphism.

Corundum bụ ihe mmadụ mere site na bauxite dị ka isi akụrụngwa n’ime ọkụ Ngwuputa. Enwere ike iji ya dị ka ihe abrasive na refractory. A na-akpọ corundum na-acha ọcha nke nwere ịdị ọcha dị elu nke a na-akpọ corundum ọcha, na corundum agba aja aja nke nwere obere ihe adịghị ọcha ka a na-akpọ corundum brown.

E nwere tumadi atọ variants nke homogeneity nke corundum Al2O3, ya bụ α-Al2O3, β-Al2O3, γ-Al2O3, na η-Al2O3 (equaxial crystal sistemu) na ρ-Al2O3 (crystal usoro) dị ka X-ray diffraction analysis. Usoro ejighị n’aka), χ-Al2O3 (usoro hexagonal), κ-Al2O3 (usoro hexagonal), δ-Al2O3 (usoro tetragonal), θ-Al2O3 (usoro monoclinic). Corundum nwere ọtụtụ agba, gụnyere enweghị agba, ọcha, ọla edo (pigmenti ion Ni, Cr), odo (pigmenti ion Ni), uhie (pigmenti Cr), blue (pigmenti ion Ti, Fe), green (pigmenti ion Ni, Ni) , V), odo odo (Ti, Fe, Cr), agba aja aja, nwa (pigmenti ion Fe, Fe), blue-violet n’okpuru incandescent oriọna, red-acha odo odo mmetụta n’okpuru fluorescent oriọna (pigmenti ion V).