Silicon carbide ceramic rotor material prepared through gel injection molding and preparation method thereof

Abstract

The invention provides a silicon carbide ceramic rotor material prepared through gel injection molding and a preparation method thereof. The ceramic rotor material comprises the following components in percentage by weight: 65-75% of silicon carbide powder, 22-32% of silicon powder, 1.2% of aluminum oxide, 0.9% of lanthanum oxide and 0.9% of yttrium oxide. The method comprises five steps of preparing a monomer premixed solution, preparing initial and stable ceramic slurry, defoaming the stable ceramic slurry, preparing a ceramic biscuit and sintering the ceramic biscuit. The silicon carbide ceramic rotor material prepared by adopting the method disclosed by the invention has the advantages of high compactness and high-temperature oxidation resistance, good thermal shock resistance, slag corrosion resistance and wear resistance and the like, can well meet processing and operating requirements for a silicon carbide ceramic rotor for rotary injection of an aluminum alloy melt, and has a broad market prospect.

Description

technical field [0001] The invention relates to a preparation method of a silicon carbide ceramic material, in particular to a preparation process of a silicon carbide ceramic rotor material for the rotary blowing of an aluminum alloy melt by gel injection molding, and belongs to the field of purification treatment of an aluminum alloy melt . Background technique [0002] Due to its significant advantages such as high specific strength and specific stiffness, excellent electrical and thermal conductivity, good corrosion resistance and oxidation resistance, aluminum alloys have been increasingly widely used in various fields such as aerospace, automobiles, ships and electronics. In recent decades, a lot of research and development have been carried out around the alloying of aluminum alloys, melt purification, refinement and modification, heat treatment and / or forming processes at home and abroad, in order to develop new high-performance aluminum alloy materials and / Or pro...

AI Technical Summary

Problems solved by technology

At present, although some researches have been carried out on the development of silicon carbide ceramic rotor materials for rotary blowing based on extrusion molding, calendering molding and / or injection molding at home and abroad, they are still limited to laboratories and experimental factories. It has not yet entered the stage of industrial mass production. The main reason is that it is difficult to prepare silicon carbide ceramic rotors by these traditional forming methods, which leads to a large workload and high cost of subsequent mechanical processing.