Method for preparing ceramic rotor by taking rare earth oxide as sintering aid

Abstract

The invention relates to the technical field of composite material preparation, in particular to a method for preparing a ceramic rotor by taking rare earth oxide as a sintering aid, which is characterized by specifically comprising the following steps of: laying a plurality of layers of glass fiber cloth which reacts and deposits a rare earth modified cerous phosphate coating in advance in a ceramic rotor mold; embedding low-density weight-reducing stuffing among the layers, coating composite glue for fixing, and sintering to obtain a ceramic rotor blank; the composite adhesive is prepared by uniformly mixing unsaturated polyester resin and ceramic powder; the rare earth modified cerous phosphate coating is obtained on the surface of the glass fiber cloth by adopting a chemical vapor deposition method and then is subjected to high-temperature carbonization treatment; and the low-density weight-reducing stuffing is filled in a hole groove formed by a plurality of layers of glass fiber cloth. Compared with the prior art, the invention has the following beneficial effects: the bending strength of the ceramic rotor is greater than or equal to 15Mpa, the acid resistance is greater than or equal to 98%, the alkali resistance is greater than or equal to 99%, and the thermal expansion coefficient is lt; and 5.46 * 10 <-6 > / K.

Description

technical field [0001] The invention relates to the technical field of composite material preparation, in particular to a method for preparing a ceramic rotor by using rare earth oxide as a sintering aid. Background technique [0002] With the rapid rise of science and technology, ceramic technology occupies an important position in the field of material science and is an important part of high technology. At present, various precision ceramic materials have been widely used in high-tech products. Because the ceramic material has the characteristics of high strength, high hardness, resistance to various acids and hydrofluoric acid corrosion, wear resistance, high temperature resistance and light specific gravity. It has been widely used in aerospace, aviation, shipbuilding, machinery, nuclear industry, petroleum, chemical industry, automobile, scientific research and national defense and military fields. In particular, silicon carbide, silicon nitride, zirconia and their c...

AI Technical Summary

Problems solved by technology

The ceramic rotor body of the current cam pump is mostly a solid sintered body, which has the advantage of being easy to process, but the disadvantage is that it is heavy, the rotor inertia is large, the energy consumption is high, the material consumption is large, and the product cost remains high, which affects the popularization and application of the product.

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