Preparation method of Yb2SiO5 spraying powder

The invention belongs to the field of inorganic nonmetallic materials and particularly relates to a preparation method of Yb2SiO5 spraying powder. The preparation method comprises the following steps:selecting Yb water soluble salt, ludox and sodium silicate as raw materials, and uniformly mixing according to the molar ratio of Yb to Si being 2 to 1; adding LiF as a reaction promoter and adjusting the pH value of a reaction system with an HCl or HNO3 solution; putting a mixed solution into a hydrothermal reactor together, pressurizing, heating and keeping for a certain time, thus separating out a powder product with lower solubility; filtering, repeatedly washing and carrying out drying treatment, thus obtaining the Yb2SiO5 powder; carrying out spray granulation, calcining and sievingon the obtained Yb2SiO5 powder, and finally, obtaining Yb2SiO5 powder particles which have the advantages of high purity, high surface denseness, high fluidity, high heat conduction speed and the like and are suitable for pla