corundum


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Related to corundum: Artificial Corundum

co·run·dum

(ko-rŭn'dŭm),
Native crystalline aluminum oxide.
[Hind. kurand]

co·run·dum

(kŏ-rŭndŭm)
Native crystalline aluminum oxide.
[Hind. kurand]
References in periodicals archive ?
Corundum grinding wheels are suitable for grinding materials such as Inconel 718.
An actual conundrum was evidenced in thousands of dream fragments, in which corundum was a mere particle, but when connected to a blizzard of other particles, it led to a quantum paradigm, a new order of dreaming-waking consciousness.
For the ratio of 10 wt% rice husk ash, only the corundum ([A.sub.2][O.sub.3]) phase was detected because the ratio of Si[O.sub.2] in the rice husk ash was not sufficient to react with [Al.sub.2][O.sub.3] for production or transformation into another ceramic phase like cristobalite (Si[O.sub.2]) and mullite (3[Al.sub.2][O.sub.3] x 2Si[O.sub.2]); this is evident in Figure 7.
Further XRD analysis predicts almost 79.93% corundum in sample C with closed pack rhombohedral system.
At 10 min of solar radiation exposure, temperature was nearly 900[degrees]C, and the XRD pattern of sample (S10) shows diffraction peaks assigned to the hkl reflections reported in the JCPDS file 1-089-7717 for the [alpha]-[Al.sub.2][O.sub.3] (corundum), along with the previous one corresponding to [gamma]-[Al.sub.2][O.sub.3].
Impact bricks were laid in the lashed area and then the corundum castable was poured.
A similar tendency variation of tribological behaviour of the studied material against corundum was exhibited, in reference [17], in which the highly pure [Ti.sub.3]Si[C.sub.2] sliding dryly against the low carbon steel.
MK corundum stone mills can be supplied in either an offline or an online version.
and Schwarzenbach, D.: 1982, Electric field gradients and charge density in corundum, [alpha]-[Al.sub.2] [O.sub.3] , Acta Cryst., A38, 733-739.
For instance, Cleopatra's favourite stone was the emerald, Queen Victoria started wearing 'Jet' jewellery after the death of her husband, Helen of Troy is said to have worn star corundum, which is a powerful love charm.
the Keystone Trappe Rock quarry at Cornog (exquisite small specimens of Alpine-type cleft minerals), Brinton's quarry at Darlington's Corners (the world's best large clinochlore crystals), the Poorhouse quarry, West Bradford Township (excellent microcline), Corundum Hill, Newlin Township (good corundum and superb diaspore crystals), the fields around Parkesburg where line rutile crystals may still be found loose in the soil.