Review of Short Phrases and Links|
This Review contains major "Zirconium"- related terms, short phrases and links grouped together in the form of Encyclopedia article.
- Zirconium is a fairly abundant element and is widely distributed in minerals, but it is never found uncombined in nature.
- Zirconium is a chemical element in the periodic table that has the symbol Zr and atomic number 40.
- Zirconium is a white metal, and thus the porcelain that is fused to it does not have to be heavily opacified to hide the underlying metal.
- Zirconium is a grayish-white metal, lustrous, and quite corrosion-resistant.
- Zirconium is a very strong, malleable, ductile, lustrous silver-gray metal.
- Zirconium has no biological role.
- Description: ZrSiO 4 Zircon is a silicate mineral, zirconium silicate.
- About half of all hafnium metal manufactured is produced by a by-product of zirconium refinement.
- Baddeleyite is a rare zirconium oxide mineral (Zr O 2) or zirconia.
- Also known as CAD-CAM dental crowns, they are based on zirconium dioxide (zirconia).
- The paste for the porcelain layer 14 is then applied to the inner surface of the zirconium oxide ceramic framework 11 and is left to completely dry.
- In this embodiment, a zirconium layer can first be formed on the semiconductor wafer.
- However, based on Dr. Garcia's review of zirconium, you may now have access to a far better option if you need to have an entire tooth replaced.
- In one embodiment, the medical implant has a surface layer of oxidized zirconium of a thickness of up to about 10 microns.
- The treated surface is then coated with a ceramic nitride material, such as titanium or zirconium nitride as described below.
- Hafnium is found combined in natural zirconium compounds but does not exist as a free element in nature.
- While hafnium is very good at absorbing neutrons, zirconium hardly absorbs neutrons at all.
- Baddeleyite is a mineral that consists of zirconia (Zr O 2). Its melting point is 2700 ° C. Elemental zirconium is refined from baddeleyite.
- Its chemical behavior shows many similarities with that or silica and zirconium, as an element belonging to the first transition group.
- It occurs in nature as the mineral zircon (zirconium silicate), from which it is obtained commercially.
- As with the implant, there are several types of cap, for example titanium and zirconium, and the price varies by as much as 100%.
- After zirconium was chosen as material for the nuclear reactor program in the 1940s, a separation method had to be developed.
- Straumann is the only company to offer an all-ceramic abutment made from the IPS e.max (zirconium dioxide) material.
- Although their chemistry is almost identical, the density of zirconium is about half of hafnium.
- Its properties are extremely close to those of Zirconium, with the exception that Hafnium is twice as dense.
- Thus a nearly-complete separation of zirconium and hafnium is necessary for their use in nuclear power.
- Chemists later developed a better understanding about the relationship of zirconium and hafnium.
- The properties of hafnium are markedly affected by zirconium impurities and these two elements are amongst the most difficult to separate.
- The newest type of crown is one made with a zirconium oxide (zirconia) ceramic coping underlying a porcelain "veneer".
- The catalyst is prepared by treating zirconium hydroxide or zirconium oxide with a sulphate-radical-containing solution and heating.
- Many systems use an aluminium oxide or zirconium oxide or zirconia core insteed of metal that makes complete porcelain restorations.
- Mendeleev's 1869 table had implicitly predicted a heavier analog of titanium and zirconium, but in 1871 he placed lanthanum in that spot.
- Inner Mongolia has more deposits of naturally-occurring niobium, zirconium and beryllium than any other province -level region in China.
- Alkoxides of calcium, titanium, zirconium, magnesium, aluminum, iron and potassium also can be used.
- A combination that yields a very durable wheel is zirconium oxide and aluminum, known as zircon alumina.
- Zirconium zinc alloy becomes magnetic at temperatures below 35 K. Oxidation state of zirconium is usually +4, although +3 and +2 can also be obtained.
- Like zirconium, hafnium reacts with halogens forming the tetrahalogen compound with the oxidation state of +4 for hafnium.
- The zirconium salt can also be a mixture of two or more species of organic zirconium salts including those of different numbers of acids per molecule.
- One of the most common initiators is ZPP, or zirconium - potassium perchlorate - a mixture of metallic zirconium and potassium perchlorate.
- ZHPP (zirconium hydride - potassium perchlorate) is a variant of ZPP that uses zirconium hydride instead of pure zirconium.
- X-ray Confirmation: Successful Implant This is an immediate post operative x-ray taken showing the implant, zirconium abutment and temporary crown.
- The abutment can be titanium or it can also be zirconium, which is white if we're going to be in an aesthetic area.
- Titanium's properties are chemically and physically similar to zirconium.
- Situated in Group 4 of the periodic table, it has properties similar to those of hafnium and zirconium.
- Its chemical properties are almost identical to those of zirconium, the element directly above it in group IVb of the periodic table.
- Sodium in its metallic form can be used to refine some reactive metals, such as zirconium and potassium, from their compounds.
- Today, chemists know that compounds of hafnium dissolve more easily in some liquids than do compounds of zirconium.
- It is a high potential region for gold, PGE, chromite, titanium, vanadium, molybdenum, zirconium and kyanite (given the necessary exploration).
- When it is finely divided into a powder, zirconium can spontaneously ignite in air, especially at high temperatures.
- Zirconium is extremely resistant to heat and corrosion.
- Hafnium was separated from zirconium through repeated recrystallization of the double ammonium or potassium fluorides by Jantzen and von Hevesey.
- Zirconium scrap stored with finely divided zirconium metal has been known to spontaneously ignite, causing fires with very high temperatures.
- This metal is commercially produced by reduction of the Zirconium(IV) chloride with magnesium in the Kroll process, and through other methods.
- The oxide is reduced to metal by heating with lanthanum, aluminium, cerium or zirconium in high vacuum.
- Zirconium Facts Learn about the chemical and physical properties and other characteristics of the element zirconium.
- Its chemical properties are almost identical to those of zirconium, the element directly above it in Group 4 of the periodic table.
- Small amounts of the element (0.1 to 0.2%) have been used to reduce grain size of chromium, molybdenum, titanium, and zirconium.
- Common impurities include magnesium, aluminium, calcium, zirconium, niobium, and tantalum.
- It can be alloyed with small quantities of other metals, such as aluminum, manganese, zinc and zirconium, to obtain desired properties.
- Metals tend to be rather transparent to neutrons, aluminum and zirconium being the two best examples of this.
- Reducing agent in the extraction of other metals such as uranium, zirconium, and thorium.
- Calcium is a soft grey alkaline earth metal that is used as a reducing agent in the extraction of thorium, zirconium and uranium.
- Other important mineral resources include iron ore, chromium, tin, zinc, lead, thorium, zirconium, vanadium, antimony, and beryllium.
- A lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in zirconium minerals.
- Hafnium is found widely distributed in nature, usually in association with zirconium minerals such as zircon.
- A lustrous, silvery gray tetravalent transition metal, hafnium resembles zirconium chemically and is found in zirconium minerals.
- Minerals that contain zirconium, such as alvite [(Hf, Th, Zr) Si O 4 H 2 O], thortveitite, and zircon (ZrSiO 4), usually contain between 1 and 5% hafnium.
- Zirconium and hafnium are contained in zircon at a ratio of about 50 to 1 and are difficult to separate.
- Zirconium oxide (zircon) has a high index of refraction and is used as a gem material.
- Zirconia is the dioxide of zirconium, a metal close to titanium in the periodic table and with similar biocompatability properties.
- And trace amounts of copper, strontium, titanium, manganese, sodium, vanadium, boron and zirconium.
- Preferably, Me is a Group IVB metal, more preferably is titanium, zirconium or hafnium and, most preferably is zirconium.
- The two elements are among the most difficult to separate—zirconium is almost always an impurity in hafnium and affects its physical properties.
- A notable physical difference between them is their density (zirconium is about half as dense as hafnium), but chemically the elements are extremely similar.
- Of all the elements, zirconium and hafnium are two of the most difficult to separate.
- Hafnium is a shiny silvery, ductile metal that is corrosion resistant and chemically similar to zirconium.
- More preferably, the catalyst contains copper oxide and an oxide of at least one element selected from zinc, magnesium, aluminum, chromium, and zirconium.
- A lustrous gray-white, strong transition metal that resembles titanium, zirconium is obtained chiefly from zircon and is very corrosion resistant.
- Nature > Chemistry > Chemical Elements > Hafnium
- Encyclopedia of Keywords > Information > Science > Titanium
- Chemical Properties
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