Rare earth elements are cerium (Ce), dysprosium (Dy), erbium (Er), europium (Eu), gadolinium (Gd), holmium (Ho), lanthanum (La), lutetium (Lu), neodymium (Nd), praseodymium (Pr), promethium (Pm), samarium (Sm), scandium (Sc), terbium (Tb), thulium (Tm), ytterbium (Yb) and yttrium (Y)
Zinc oxide is an inorganic compound with the formula ZnO. ZnO is a white powder that is insoluble in water, and it is widely used as an additive in numerous materials and products including rubbers, plastics, ceramics, glass, cement, lubricants, paints, ointments, adhesives, sealants, pigments, foods, batteries, ferrites, fire retardants, and first-aid tapes. Although it occurs naturally as the mineral zincite, most zinc oxide is produced synthetically
Ammonium paratungstate is produced by separating tungsten from its ore. Once the ammonium paratungstate is prepared, it is heated to its decomposition temperature, 600°C. Left over is WO3, tungsten(VI) oxide. From there, the oxide is heated in an atmosphere of hydrogen, reducing the tungsten to elemental powder, leaving behind water vapor. From there, the tungsten powder can be fused into any number of things, from wire to bars to other shapes
Tungsten carbide (WC) powder, is one new material which produces through the new craft, Purity high, the grain-size distribution is even, high surface activity, has thermostability,..
Tungsten (W) is one of the so-called transition metals with the atomic number 74, it’s shiny gray metal in a solid state at room temperature. Tungsten has many outstanding characteristics, it has the highest melting point of all metal elements of 3422°C, and boiling point around 5,700°C closing to the surface temperature of Sun, thus it can withstand a very high temperature
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Copper(II) sulfate, also known as cupric sulfate, copper sulfate, blue vitriol, or bluestone, is a chemical compound. Its chemical formula is CuSO4. It contains copper in its +2 oxidation state. It also contains sulfate ions. It is a blue solid that can kill fungi. It is also used to purify copper metal. It is common in chemistry sets and chemistry demonstrations.
Zinc sulfate and ferric sulfate, [solid] is a light colored solid. Denser than water and insoluble in water. May be powdered. Primary hazard is threat to the environment. Immediate steps should be taken to limit spread to the environment. May irritate skin, eyes and respiratory system.