zirconium

Definitions

  • WordNet 3.6
    • n zirconium a lustrous grey strong metallic element resembling titanium; it is used in nuclear reactors as a neutron absorber; it occurs in baddeleyite but is obtained chiefly from zircon
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Webster's Revised Unabridged Dictionary
    • n Zirconium (Chem) A rare element of the carbon-silicon group, intermediate between the metals and nonmetals, obtained from the mineral zircon as a dark sooty powder, or as a gray metallic crystalline substance. Symbol Zr. Atomic weight, 90.4.
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Century Dictionary and Cyclopedia
    • n zirconium Chemical symbol, Zr; atomic weight, 89.6. The metal contained in zirconia. It is commonly obtained in the form of a black powder, but is also known in the crystalline state, forming highly lustrous blackish-gray laminæ, having a specific gravity of 4.15. The amorphous metal takes fire when gently heated in the air, but the crystalline variety requires an intense heat for its ignition. The common acids do not attack it. Zirconium is a remarkable element in that it is very widely and generally diffused in nature, but nowhere, so far as is known, found in any one locality in large quantity; in this respect it has a decided resemblance to titanium. The form in which it occurs is that of the silicate (zircon), and usually in minute or even microscopic crystals, which have been detected in many granitic and syenitic rocks, as well as in various gneisses and crystalline schists. Zircon has been found also, but less abundantly, in some eruptive rocks, both ancient and modern. Zirconium is chemically most closely related to titanium, and both these metals have certain affinities with silicon, forming dioxids and volatile tetrachlorids, as does that non-metallic element.
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Chambers's Twentieth Century Dictionary
    • n Zirconium zir-kō′ni-um the metallic constituent of the earth Zircō′nia, which is found in association with silica in the minerals Zir′con and hyacinth, and is obtained only in Ceylon, one district of the Ural, and southern Norway
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Etymology

Webster's Revised Unabridged Dictionary
NL
Chambers's Twentieth Century Dictionary
Ar. zarkūn, vermilion—Pers. zargūn, gold-coloured.

Usage

In literature:

From the filtrate alkalies throw down zirconium hydroxide, free from iron.
"Scientific American Supplement, No. 441, June 14, 1884." by Various
Zirconium is exactly like titanium in form, but contains a large number of atoms.
"Occult Chemistry" by Annie Besant and Charles W. Leadbeater
Cooperite, its rival, is an alloy of nickel and zirconium, stronger, lighter and cheaper than stellite.
"Creative Chemistry" by Edwin E. Slosson
Zirconium oxide has been found to serve better than lime.
"Artificial Light" by M. Luckiesh
A lamp-filament of titanium and zirconium with electric lamps or with alloys?
"The Classification of Patents" by United States Patent Office
For such purposes the alloy ferrozirconium is used, which carries 25 to 35 per cent zirconium metal.
"The Economic Aspect of Geology" by C. K. Leith
ZIRCON is itself a species of mineral and is a silicate of zirconium.
"A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public" by Frank Bertram Wade
Carbon was joined with silicon, zirconium and titanium, while boron, being trivalent, was relegated to another group.
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1" by Various
Zirconium chlorid has an astringent taste, and if fed repeatedly will cause the metallic astringent action.
"Barium, A Cause of the Loco-Weed Disease" by Albert Cornelius Crawford
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In news:

Mini-Flap Discs with a zirconium grain abrasive for grinding, Cotton Fiber Discs impregnated with abrasives for blending, and MegaBrite surface conditioning discs with non-woven construction for final finishing.
Internal aspect of DCS Precifit Zirconium (DCS Popp Dental Laboratory) core with final layers of porcelain.
The mineral zircon is processed to yield zirconium, which is used in products like ceramics, antiperspirants, paints and coatings.
The Dean, This Hospital Earth, Sars From Mars, Strix Vega and Pubic Zirconium.
Zirconium dioxide based dental restorations.
The Cimara Zircon chairside zirconia re-pair system helps clinicians restore fractures in zirconium dioxide veneers and crowns in a few simple steps.
Zirconium oxide conversion coatings have proven to be excellent replacements for iron phosphate pretreatments in recent years.
Zirconium oxide or zirconia is used in high-end, high-value, low-volume applications.
It is estimated that the zirconium layer seen in LS IV-14 116 would weigh about 4 billion tons, or 4,000 times the world's annual production of zirconium .
Pred Materials, in cooperation with suppliers in China and South Korea, is offering a high-quality and reliably produced line of zirconium oxides and other zirconium -based chemicals.
C3 International, Alpharetta, GA, presents its patented metal-infusion surface-treatment (MIST) technology that allows it to treat tool and die surfaces with a resilient layer of cubic zirconium .
Welding zirconium and zirconium alloys Part II.
Welding zirconium and zirconium alloys.
Welding zirconium and zirconium alloys Part III.
Cement smothers Prineville zirconium fire.
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In science:

We assume that in mixed BZT system zirconium ions can be shifted so that they supply the random electric dipoles to BaTiO3 component.
Random field based model of mixed ferroelectrics phase diagram
This field distribution function halfwidth has to be larger than the mean field produced by zirconium dipoles because BaZrO3 is paraelectric.
Random field based model of mixed ferroelectrics phase diagram
This discrepancy may be related to the model assumption that electric dipoles of titanium and zirconium ions are the main sources of random fields.
Random field based model of mixed ferroelectrics phase diagram
Zirconium ions can be considered as dilatation centers or elastic dipoles which are known to destroy a long-range order leading to relaxor properties appearance .
Random field based model of mixed ferroelectrics phase diagram
Empirical equations for the principal refractive indices and column angle of obliquely deposited films of tantalum oxide, titanium oxide, and zirconium oxide.
Thin-Film Metamaterials called Sculptured Thin Films
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