ru

корунд

1 masculine

EKI Combined Dictionary 2026

Last modified 08.06.2025

Meanings

suure kõvadusega mineraal ja hinnatud vääriskivi, mille karmiinpunast teisendit nimetatakse rubiiniks ja sinakat läbipaistvat teisendit safiiriks

Translations

Terminological databases

Koolisõnastikud 2005–2010

ID 599326 Last modified 21.10.2022
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Domain chemistry
  • kõva mineraal , mille põhikoostisaine on alumiiniumoksiid ; suured läbipaistvad korundikristallid ( rubiin , safiir ) on hinnatud vääriskivid
корунд
masculine

Materjalitehnika terminibaas

ID 673887 Last modified 08.06.2025
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Domain ceramic technologycuttingpowder metallurgy
corundum preferred
  • heksagonaalse kristallstruktuuriga ning looduslikult esinev, erineva värvusega alumiiniumoksiid (Al2O3), millele on iseloomulik suur kõvadus (Mohsi kõvadus 9) ning rasksulavus (sulamistemperatuuri u 2045 oC) (vt alumiiniumoksiid; vrd elektrokorund)
    Good to know
    • Korund leiab tehnikas kasutust abrasiivina, rasksulava materjalina, kulumiskindla materjalina jms. Korundi sinist värvi erim on tuntud kui safiir ja punast värvi erim kui rubiin.
  • a naturally occuring hexagonal, variously coloured mineral of the composition Al2O3 which is characterized by high hardness (9 on Mohs scale) and refractoriness (melting point 2045 oC) (see: aluminium oxide; compare: fused alumina)
    Good to know
    • Used as an abrasive, refractory material, wear resistant material etc. The clear blue variety of corundum is known as saphire and clear red ruby.
  • встречающийся в природе минерал различных цветов состава Al2O3 с гексагональной кристаллической решёткой; для него характерна высокая твёрдость (по минералогической шкале 9) и тугоплавкость (температура плавления 2045 °С) (см. оксид алюминия: ср. электрокорунд)
    Good to know
    • Применяется как абразив, огнеупорный материал, износостойкий материал, и т. д. Прозрачная голубая разновидность корунда известна как сапфир, а прозрачная красная как рубин.
korund
corundum preferred
корунд
masculine

Word forms

корунд корунды

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