A Spectrographic Method for Determining the …

A Spectrographic Method for Determining the ... A SPEGTROGRAPHIG METHOD FOR DETERMINING THE HAFNIUM-ZIRCONIUM RATIO ... the ium-containing …

Patent US7112485 - Systems and methods for forming ...

A method of forming (and apparatus for forming) a ium and/or hafnium-containing layer on a substrate, particularly a semiconductor substrate or substrate ...

Hafnium - Wikipedia, the free encyclopedia - Arkaitz …

Hafnium is a shiny, silvery, ductile metal that is corrosion-resistant and chemically similar to ium. [18] The physical properties of hafnium metal samples are ...

Zirconium - Wikipedia, the free encyclopedia

(Zirconium and hafnium are two of the most difficult elements to separate.) Two main process are in use: ... Compounds containing ium are not noted for toxicity.

Hafnium - Wikipedia, the free encyclopedia

Hafnium is a shiny silvery, ductile metal that is corrosion resistant and chemically extremely similar to ium. The physical properties of hafnium are markedly ...

US7390436B2 - Zirconium or hafnium-containing …

Oxo-acid salts, double oxides or complex oxides contain 0.001-10 atom % of Zr or Hf. They emit near-ultraviolet radiation when excited with vacuum-ultraviolet radiation.

Brevetto EP0111700A1 - Zeolites containing titanium ...

1. A titanum-, ium- and/or hafnium-containing zeolite which a) contains silicon, aluminium, sodium, potassium, at least one element from the group consisting of ...

Zirconium - Wikipedia

Commercial ium metal typically contains 1–3% of hafnium, which is usually not problematic because the chemical properties of hafnium and ium are very similar. Their neutron-absorbing properties differ strongly, however, necessitating the separation of hafnium from ium for nuclear reactors.

Synthesis of Titanium, Zirconium, and Hafnium Complexes ...

Synthesis of Titanium, Zirconium, and Hafnium Complexes that Contain Diamido Donor Ligands ... 2- and an Evaluation of Activated Versions for the Polymerization ...

Prepping for a Goliath in rare earths, hafnium, niobium ...

Generally speaking, this year’s turnaround in a variety of commodity spaces was characterised by three major factors: China’s extensive closure […]

US4728706A - Titanium, ium- and hafnium containing ...

By initiating site is meant a group comprising a titanium, ium or hafnium-containing moiety, such as (R 4) 3-a M-- or --(R 4) 2 MOM(R 4) 2--, wherein all symbols are as defined above. The process of the invention is carried out at about -100° C. to about 150° C., preferably 0° C. to 50° C., more preferably at ambient temperature.

Patent US5176878 - Zirconium-hafnium separation …

(D) separating the solvent phase containing the hafnium values and HSCN from the aqueous phase containing ium raffinate; (E) stripping the hafnium values from ...

Zirconium & Hafnium: Inorganic & Coordination Chemistry ...

The inorganic and coordination chemistry of ium and hafnium is described. The physical properties of the metals, as well as their isolation, purification, and ...

Hafnium | chemical element | Britannica.com

Hafnium: Hafnium (Hf), chemical element (atomic number 72), metal of Group 4 ... ium containing about 1 percent of hafnium is as acceptable as pure ium.

Hafnium | chemical element | Britannica.com

Hafnium (Hf), chemical element (atomic number 72), metal of Group 4 (IVb) of the periodic table. It is a ductile metal with a brilliant silvery lustre.

Hafnium: Small Supply, Big Applications | ETF.com

Hafnium: Small Supply, Big Applications. ... purified ium must contain as little hafnium as possible to be of any use in uranium-based fuel rods, ...

Structural studies of UHMWPE composite materials ...

According to Table 1, and materials containing oxides of ium and hafnium, a phase transition at 91-93oS is absent in the starting UHMWPE.

Zirconium(IV)- and hafnium(IV)-containing …

Zirconium(IV)- and hafnium(IV)-containing polyoxometalates as oxidation precatalysts: Homogeneous catalytic epoxidation of cyclooctene by hydrogen peroxide Author links open overlay panel Hiroki Aoto Keisuke Matsui Yoshitaka Sakai Teppei Kuchizi Hiromi Sekiya Hironori Osada Takuya Yoshida Satoshi Matsunaga Kenji Nomiya

Zirconium or hafnium-containing oxides - Shin-Etsu ...

Oct 13, 2005· Oxo-acid salts, double oxides or complex oxides contain 0.001-10 atom % of Zr or Hf. They emit near-ultraviolet radiation when excited with vacuum ...

METAL-ELEMENT COMPOUNDS OF TITANIUM, …

METAL-ELEMENT COMPOUNDS OF TITANIUM, ZIRCONIUM, AND HAFNIUM ... nearly so, containing small amounts of crystalline

US7390436B2 - Zirconium or hafnium-containing …

Oxo-acid salts, double oxides or complex oxides contain 0.001-10 atom % of Zr or Hf. They emit near-ultraviolet radiation when excited with vacuum-ultraviolet radiation. Zirconium or hafnium-containing oxides

Hafnium | Minerals Education Coalition

Named from the Latin name of Copenhagen, hafnium is a lustrous silvery-gray metal that commonly occurs with ium. Most ium minerals contain a fe

Zirconium: Metal or Ceramic ? – CeraRoot Zirconia …

Zirconium: Metal or Ceramic ? Posted on ... The most important minerals that contain ium are ... for most uses still has a content of 1% to 3% hafnium.

Zirconium | Minerals Education Coalition

Named for the gemstone in which it was first discovered (which itself is named from the Arabic word meaning "gold color"), ium is a hard, lustrous, g

Samples Containing Zirconium or Hafnium | Inorganic …

Materials containing Zirconium and Hafnium compounds are also relatively non-hazardous and do not present unique sampling and handling problems. However, many analytical measurement techniques require a solution …

Cyclopentadienyl compounds of ium and …

CYCLOPENTADIENYL COMPOUNDS OF ZIRCONIUM AND HAFNIUM, CONTAINING HALOACETATE LIGANDS E. M. Brainina, E. V. Bryukhova, B. V. Lokshin, and N. …

Hafnium | Hf - PubChem

Some superalloys used for special applications contain hafnium in combination ... Mineral Commodity Summaries, Zirconium and Hafnium (2005). Available from, as ...

Preparation of compounds of ium, titanium, and hafnium

Preparation of compounds of ium, ... Preparation of compounds of ium, titanium, and hafnium ... Preparation of compounds of ium, ...

Zirconium and Hafnium - USGS

ZIRCONIUM AND HAFNIUM—2000 87.1 ... remainder is consumed as ium metal and ium-containing alloys. Zircon, used for facings on foundry molds, increases

FACTBOX-Nuclear industry and ium | Reuters

Apr 23, 2009· LONDON, April 23 (Reuters) - Following are some facts about ium used to clad fuel rods containing uranium for the production of nuclear energy ...