TWI750137B

Provided is an industrially advantageous method for obtaining zirconium tungsten phosphate that has a single phase as observed by x-ray diffraction and that is useful as a negative thermal expansion material. This production method for zirconium tungsten phosphate is characterized by the firing of a...

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Bibliographische Detailangaben
1. Verfasser:	FUKAZAWA, JUNYA
Format:	Patent
Sprache:	chi
Schlagworte:	ALLOYS ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F CONCRETE FERROUS OR NON-FERROUS ALLOYS INORGANIC CHEMISTRY LIME, MAGNESIA METALLURGY REFRACTORIES SLAG TREATMENT OF ALLOYS OR NON-FERROUS METALS TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	Provided is an industrially advantageous method for obtaining zirconium tungsten phosphate that has a single phase as observed by x-ray diffraction and that is useful as a negative thermal expansion material. This production method for zirconium tungsten phosphate is characterized by the firing of a reaction precursor that is a mixture of a tungsten compound and an amorphous compound that includes phosphorous and zirconium. The reaction precursor has an infrared absorption peak at least within 950-1150 cm-1, and the maximum infrared absorption peak value in said range is preferably 1030 (±20) cm-1.