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Zirconium phosphates (zirconium hydrogen phosphate) are acidic, inorganic cation exchange materials that have a layered structure with formula Zr(HPO 4) 2 ∙nH 2 O. [1] These salts have high thermal and chemical stability, solid state ion conductivity, resistance to ionizing radiation, and the capacity to incorporate different types of molecules with different sizes between their layers.
Zirconium diphosphide forms grey crystals that is insoluble in water. Zirconium diphosphide is very toxic. [3] Has a lead(II) chloride crystal structure. [4] [2] [5] It dissolves in warm concentrated sulfuric acid. It decomposes into phosphorus and ZrP when heated in vacuum: [6] ZrP 2 → ZrP + P
Scanning electron micrograph showing the microstructure of Zircaloy-4. At temperatures below 1100 K, zirconium alloys belong to the hexagonal crystal family (HCP). Its microstructure, revealed by chemical attack, shows needle-like grains typical of a Widmanstätten pattern. Upon annealing below the phase transition temperature (α-Zr to β-Zr ...
Metallography allows the metallurgist to study the microstructure of metals. A micrograph of bronze revealing a cast dendritic structure Al-Si microstructure. Microstructure is the very small scale structure of a material, defined as the structure of a prepared surface of material as revealed by an optical microscope above 25× magnification. [1]
Zirconium is extracted from zirconium ore by removing the oxygen and silica. This process, known as the Kroll process, was first applied to titanium. The Kroll process results in an alloy containing hafnium. The hafnium and other impurities are removed in a subsequent step. Zirconium hydride is created by combining refined zirconium with hydrogen.
Zirconium monophosphide is a binary inorganic compound of zirconium metal and phosphorus with the chemical formula ZrP. [1] [2] [3] Preparation.
Zirconium (IV) hydroxide, often called hydrous zirconia is an ill-defined material or family of materials variously described as ZrO 2 ·nH 2 O and Zr(OH) 4 ·nH 2 O. All are white solids with low solubility in water. These materials are widely employed in the preparation of solid acid catalysts. [2] [3]
The salt is produced by hydrolysis of zirconium tetrachloride or treating zirconium oxide with hydrochloric acid. [2] It adopts a tetrameric structure, consisting of the cation [Zr 4 (OH) 8 ] 8+ . features four pairs of hydroxide bridging ligands linking four Zr 4+ centers.