Zirconium combines with sulphur to form a sulphide, and with carbon to form several carbides.
He was the first to discover uranium, zirconium and titanium, and to characterize them as distinct elements, though he did not obtain any of them in the pure metallic state; and he elucidated the composition of numerous substances till then imperfectly known, including compounds of the then newly recognized elements: tellurium, strontium, cerium and chromium.
Carbon was joined with silicon, zirconium and titanium, while boron, being trivalent, was relegated to another group. A general classification of elements, however, was not realized by Frankland, nor even by Odling, who had also investigated the question from the valency standpoint.
In the same year as Klaproth detected uranium, he also isolated zirconia or zirconium oxide from the mineral variously known as zircon, hyacinth, jacynth and jargoon; but he failed to obtain the metal, this being first accomplished some years later by Berzelius, who decomposed the double potassium zirconium fluoride with potassium.
In the following year, 1795, Klaproth announced the discovery of a third new element, titanium; its isolation' (in a very impure form), as in the case of zirconium, was reserved for Berzelius.
In 1824 he obtained zirconium from potassium zirconium fluoride; the preparation of (impure) titanium quickly followed, and in 1828 he obtained thorium.
Rosenbuschite, hiortdahlite, and some other rare members containing zirconium and fluorine, occur as accessory constituents in the nephelinesyenite of southern Norway.
In 1858 he pointed out the isomorphism of the fluostannates and the fluosilicates, thus settling the then vexed question of the composition of silicic acid; and subsequently he studied the fluosalts of zirconium, boron, tungsten, &c., and prepared silicotungstic acid, one of the first examples of the complex inorganic acids.
In its chemical relations, titanium is generally tetravalent, and occurs in the same sub-group of the periodic classification as zirconium, cerium and thorium.
Troost produced crystallized zirconium by fusing the double fluoride with aluminium in a graphite crucible at the temperature of melting iron, and extracting the aluminium from the melt with hydrochloric acid.
In its chemical affinities zirconium resembles titanium, cerium and thorium; it occurs in company with these elements, and is tetravalent in its more important salts.
Zirconium oxide or zirconia, Zr02, has become important since its application to the manufacture of mantles for incandescent gas-lighting.
Zirconium hydroxide, Zr(OH) 4, as thus obtained, is quite appreciably soluble in water and easily in mineral acids, with formation of zirconium salts, e.g.
Zirconium hydride, ZrH2, is supposed to be formed when zirconia is heated with magnesium in an atmosphere of hydrogen.
Zirconium fluoride, ZrF4, is obtained as glittering monoclinic tables (with 3H 2 0) by heating zirconia with acid ammonium fluoride.
Zirconium chloride, ZrC1 4, is prepared as a white sublimate by igniting a mixture of zirconia and charcoal in a current of chlorine.
Zirconium iodide, Zr14, was obtained as a yellow, microcrystalline solid by acting with hydriodic acid on heated zirconium (Wedekind, Ber., 1904, 37, p. 1135).
It fumes in air; with water it gives ZrOI 2.8H 2 0; and with alcohol ethyl iodide and zirconium hydroxide are formed.
Zirconium also forms double sulphates of the type Zr203(S04M)2 nH20, where M =K, Rb, Cs, and n=8 for K, 15 for Rb, 11 for Cs (Rosenheim and Frank, Ber., 1905, 38, p. 812).
Dyson has measured some eight hundred lines in the lower chromosphere and identified them with emission spectra of the following elements: hydrogen, helium, carbon with the cyanogen band, sodium, magnesium, aluminium, silicon, calcium, scandium, titanium, vanadium, chromium, manganese, iron, zinc, strontium, yttrium, zirconium, barium, lanthanum, cerium, neodymium, ytterbium, lead, europium, besides a few doubtful identifications; it is a curious fact that the agreement is with the spark spectra of these elements, where the photosphere shows exclusively or more definitely the arc lines, which are generally attributed to a lower temperature.
ZIRCONIUM [[[symbol]] Zr, atomic weight 90 6 (0= 16)], a metallic chemical element.
Zirconium bromide, ZrBr 4, is formed similarly to the chloride.
In its salts, thorium is tetravalent, and in the periodic classification it occurs in the same sub-group as titanium, cerium and zirconium.
Later they find the zirconium that Roger brought home and conclude that he is the thief.
Victoria came on the phone and said they wanted cubic zirconium on the detailing, and a large Union Jack somewhere too.
zirconium silicate ceramic cement.
It is difficult to produce because it requires very high temperatures, over 2,700 Celsius, to melt powdered zirconium and zirconium dioxide.
zirconium production, other than production of fuel cladding, is not subject to declaration or inspection.
zirconium fuel assemblies and the channels containing them disintegrated.
It is the oxide of the metallic element zirconium.
Kind to you - great for sensitive skin PitRok does not contain aluminum chlorohydrate or aluminum zirconium that many people find irritating.
Features abbreviated slimline EVA handle, Fuji GPS reel fitting, and Zirconium rings.
Zirconia Overview Zirconia is an ionic ceramic, zirconium oxide.
The sample was mechanically polished and mounted by means of a zirconium silicate ceramic cement.
Zirconium production, other than production of fuel cladding, is not subject to declaration or inspection.
Within four seconds, steam pressure and power readings went off the scale; the zirconium fuel assemblies and the channels containing them disintegrated.
Grade 19 Titanium alloy including 3% aluminum, 8% vanadium, 6% chromium, 4% zirconium, 4% molybdenum.
The Lifetime Mother's Floral Locket is a sterling silver heart-shaped locket in a flower filigree design that has a clear zirconium crystal in the center.
Cubic zirconia (often abbreviated CZ) is a lab-created crystalline cubic form of zirconium oxide stabilized with small quantities of other minerals, typically yttrium or calcium.
Diamonds can be found in many different colors, and so can CZ, depending on what different mineral oxides have been added to the zirconium oxide during crystal stabilization and cooling.
Stephen Lux, President and CEO of Gemesis, a company that produces quality, lab-created diamonds explains, "Diamond-like materials such as cubic zirconium, moissanite and diamond-coated materials are not diamond.
If a diamond eternity ring isn't in your budget, but you like the look and don't mind purchasing a cubic zirconium, Diamonique, or colored stone eternity ring, they are out there and they are absolutely stunning.
Another form, aluminum zirconium tetrachlorohydrex glycine, is a more tolerable form of aluminum salt that is less likely to result in skin irritation.
The word usage examples above have been gathered from various sources to reflect current and historial usage. They do not represent the opinions of YourDictionary.com.