Cryolite (Na3AlF6, sodium hexafluoroaluminate) is an uncommon mineral identified with the once large deposit at Ivigtt on the west coast of Greenland, depleted by 1987.
Nonferrous metal, Rare metals, Rare And Noble Metal, Metal powder.
Nanometer TiO2 Series, Nanometer SiO2 Series,Nanopowder,Graphene.
Production of tin nanometric powders by hydrogen DC claret arc evaporation.
Gerhold Chemetals Co., Ltd is a German company founded both in Germany and China in 1997.
Yttrium oxide for sale.
Silver nitrate uses.
Gerhold Chemetals Co., Ltd.
Gerhold Chemetals Co., Ltd is a German company founded both in Germany and China in 1997, focuses on research and development of Metallic powders, Metal Compounds nano powders. We can customize products according to customers’ special requirements.
Our technologies are from Elektrotechnik University, Aachen University, München University and Beijing University.
The advantages of our products:
1. Uniform particle size
2. invariant Shape
3. High purity, reach 99.999999
4. Good dispersion
In worldwide market, Gerhold Chemetals has sold products to more than 50 countries. We will keep on developing and enlarging business by our advantages.
The first time the phosphorescence of ZnS was observed by the French chemist Théodore Sidot in 1866. His findings were presented by the renowned chemist A. E. Becquerel who was involved in the research on luminescence and phosphorescence.
ZnS was used by Ernest Rutherford and others in the early years of nuclear physics as a scintillation detector, because it emits light on excitation by x-rays or electron beam, making it useful for x-ray screens and cathode ray tubes. It also exhibits phosphorescence due to impurities on illumination with blue or ultraviolet light.
Hafnium is a shiny, silvery, ductile metal that is corrosion-resistant and chemically similar to zirconium(due to its having the same number of valence electrons and being in the same group). The physical properties of hafnium metal samples are markedly affected by zirconium impurities, especially the nuclear properties, as these two elements are among the most difficult to separate because of their chemical similarity.
Nickel is a chemical element with the chemical symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel belongs to the transition metals and is hard and ductile. Pure nickel shows a significant chemical activity, though larger colletions of the metal are slow to react with air at ambient conditions due to the formation of a protective oxide surface.
Copper is a chemical element with the symbol Cu (from Latin: cuprum) and atomic number 29. It is a ductile metal with very high thermal and electrical conductivity. Pure copper is soft and malleable; and its exposed surface has a reddish-orange tarnish. It is used as a conductor of heat and electricity, a building material, and a constituent of various metal alloys.
Known as tungsten trioxide or tungstic anhydride, Tungsten trioxide (WO3) is a chemical compound containing oxygen and the transition metal tungsten. It is frequently used in industry to manufacture tungstates for x-ray screen phosphors, fireproofing fabrics and in gas sensors. Due to its rich yellow color, WO3 is also used as a pigment in ceramics and paints.
Other names: Tungstic anhydride; Tungsten(VI) oxide; Tungstic oxide
Molecular formula: WO3
Molecular Weight: 231.84 g/mol
Barium fluoride is a chemical compound of barium and fluorine. Molecular formula: BaF2. The highest quality Barium Fluoride also has application as the fastest known scintillator material and is used in High Energy Physics Experiments. Barium Fluoride (BaF2) is commonly used as a scintillator material and is useful as a transmission window material for IR spectroscopy particularly for analysis of fuel oil samples. Molecular Weight: 175.34 g/mol.
Strontium fluoride, SrF2, also called strontium difluoride and strontium(II) fluoride, is a fluoride of strontium. Another proposal is that polarisation of the electron core of the strontium atom creates an approximately tetrahedral distribution of charge that interacts with the Sr-F bonds. It is a stable white brittle crystalline solid with melting point of 1477°C and boiling point 2460°C. Strontium Fluoride has only specialist applications.
Magnesium fluoride is an inorganic compound. Magnesium fluoride is transparent over an extremely wide range of wavelengths. Windows, lenses, and prisms made of this material which can be used over the entire range of wavelengths from 0.120 μm (vacuum ultraviolet) to 8.0 μm (infrared). MgF2 is also used as a flux.
Zinc oxide is an ingredient in many products, including certain creams and ointments used to prevent or treat minor skin burns and irritation. Zinc oxide overdose occurs when someone accidentally or intentionally eats this medication. In material science, ZnO is a wide-bandgap semiconductor of the II-VI semiconductor group (since zinc and oxygen belong to the 2nd and 6th groups of the periodic table, respectively). The native doping of the semiconductor (due to oxygen vacancies) is n-type.