Method for preparing zirconium diboride ceramic films
A zirconium diboride and ceramic thin film technology, applied in the coating and other directions, can solve the problems of poor thermal shock resistance, overall performance decline, limitations, etc., and achieve the effects of simple preparation method, good product purity, and easy operation of the preparation method.
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[0011] Specific embodiments: (1) Dissolve boric acid, sucrose, and citric acid in deionized water at a mass ratio of 8:4:3 to obtain a solution with a molar mass of boric acid of 3.5 mol / mL, and add 4 mol / mL of boric acid to it. The aqueous solution of hydrated zirconium oxychloride is mixed to obtain an inorganic solution, the pH is adjusted to 3-5, 1.5mol / ml polyvinyl alcohol solution is added, and the precursor solution is prepared by stirring uniformly;
[0012] (2) Coating the obtained precursor solution on a glass plate, drying to obtain a precursor film, and sintering the zirconium diboride precursor film at 1600° C. to obtain a zirconium diboride ceramic film.
[0013] In step (2), the zirconium diboride precursor film is sintered in a high-temperature tube furnace under a high-purity argon atmosphere.
[0014] By XRD analysis of the prepared product and EDS characterization by energy dispersive spectrometer, it can be found that the surface of the prepared product fil...
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