What is the main ingredient of korundum?

Komponen utama korundum yaiku aluminium oksida.

corundum, the name originated from India, is a mineralogical name. There are three main variants of the homogeneity of corundum Al2O3, namely α-Al2O3, β-Al2O3, and γ-Al2O3. The hardness of corundum is second only to diamond.

Corundum minangka watu permata sing dibentuk saka kristal alumina (Al2O3). Corundum dicampur karo kromium metalik abang padhang lan umume disebut ruby; nalika korundum biru utawa ora ana warna umume diklasifikasikake minangka safir.

Corundum rangking 9 ing tabel kekerasan Mohs. Gravitasi spesifik yaiku 4.00, lan nduweni struktur kisi kolom heksagonal. Amarga kekerasan lan rega sing luwih murah tinimbang berlian, korundum wis dadi bahan sing apik kanggo alat sandpaper lan grinding.

Corundum has glass luster, hardness 9. The proportion is 3.95-4.10. It is formed under the conditions of high temperature, rich aluminum and poor silicon C, and is mainly related to magmatism, contact metamorphism and regional metamorphism.

Korundum minangka bahan buatan manungsa sing digawe saka bauksit minangka bahan baku utama ing tungku pertambangan. Bisa digunakake minangka bahan abrasive lan refractory. Korundum putih kanthi kemurnian sing luwih dhuwur diarani korundum putih, lan korundum coklat kanthi jumlah impur cilik diarani korundum coklat.

Ana telung varian saka homogeneitas korundum Al2O3, yaiku α-Al2O3, β-Al2O3, γ-Al2O3, lan η-Al2O3 (sistem kristal equaxial) lan ρ-Al2O3 (sistem kristal) miturut analisis difraksi sinar-X. Sistem ora mesthi), χ-Al2O3 (sistem heksagonal), κ-Al2O3 (sistem heksagonal), δ-Al2O3 (sistem tetragonal), θ-Al2O3 (sistem monoklinik). Korundum nduweni pirang-pirang werna, kalebu ora ana warna, putih, emas (ion pigmen Ni, Cr), kuning (ion pigmen Ni), abang (ion pigmen Cr), biru (ion pigmen Ti, Fe), ijo (ion pigmen Co, Ni). , V), ungu (Ti, Fe, Cr), coklat, ireng (ion pigmen Fe, Fe), biru-violet ing lampu pijar, efek abang-ungu ing lampu neon (ion pigmen V).