- synthetic corundum
- Смотри Электрокорунд.
Энциклопедический словарь по металлургии. — М.: Интермет Инжиниринг. Главный редактор Н.П. Лякишев. 2000.
synthetic corundum
Смотреть что такое "synthetic corundum" в других словарях:
Corundum — General Category Oxide mineral – Hematite group Chemical formula Alumi … Wikipedia
Synthetic alexandrite — is a crystal which has been created by the floating zone method. This method is also used to synthetically grow a variety of crystals: YAG (Yttrium Aluminum Garnet) in white, blue, pink and several other shades, ruby, chrysoberyl and, most and… … Wikipedia
corundum — /keuh run deuhm/, n. a common mineral, aluminum oxide, Al2O3, notable for its hardness: transparent varieties, as sapphire and ruby, are used as gems, other varieties as abrasives: often made synthetically. [1720 30; < Tamil kuruntam; akin to Skt … Universalium
Birthstones — ▪ Table Birthstones month traditional gemstone 20th century expansion synthetic supplement: trade name material of synthetic stone January garnet garnet dark red synthetic corundum February amethyst amethyst purple synthetic corundum March… … Universalium
Verneuil process — /verr noy /; Fr. /verdd nue yeu/ a process for making synthetic rubies, sapphires, spinels, etc., by the fusion at high temperatures of powdered compounds. Also called flame fusion process. [named after A.V.L. Verneuil, 19th century French… … Universalium
Verneuil process — The Verneuil process, also called flame fusion, was the first commercially successful method of manufacturing synthetic gemstones, developed in 1902 by the French chemist Auguste Verneuil. It is primarily used to produce the ruby and sapphire… … Wikipedia
Strontium titanate — Systematic name Strontium(2+) oxotitaniumbis(olate)[ … Wikipedia
Ammolite — Infobox mineral name = Ammolite category = fossilized, mineralized Ammonite shell boxwidth = boxbgcolor = imagesize = caption = Unprocessed sample of ammolite, a dragon skin pattern is apparent formula = CaCO3 aragonite polymorph, with minor… … Wikipedia
List of gemstone species — There are over 130 species of minerals that have been cut into gemstones with 50 species in common use. These include: *Agate *Alexandrite and other varieties of chrysoberyl *Aquamarine and other varieties of beryl *Chrysocolla *Chrysoprase… … Wikipedia
emerald — I. noun Etymology: Middle English emerallde, from Anglo French esmeralde, from Vulgar Latin *smaralda, from Latin smaragdus, from Greek smaragdos Date: 14th century 1. a rich green variety of beryl prized as a gemstone 2. any of various green… … New Collegiate Dictionary
