Preparation method of zirconia ceramic cutting tool based on gel injection molding process

Abstract

A gel-casting process-based zirconia ceramic cutter preparation method comprises the following steps: providing yttria-stabilized tetragonal zirconia powder, alumina powder, silicon nitride powder, a dispersing agent, a gelata and a release agent; performing ball milling on the yttria-stabilized tetragonal zirconia powder, alumina powder, silicon nitride powder, the dispersing agent and a defined amount of deionized water to prepare a ceramic powder suspended matter; preheating the ceramic powder suspended matter with the preheating temperature of 65-75 DEG C; heating the gelata to dissolve to obtain a gelata solution, adding the gelata solution into the preheated ceramic powder suspended matter while the gelata solution is hot, stirring for mixing, and defoaming to obtain a ceramic slurry; after the inner side wall of a mould is coated with the release agent, pouring the ceramic slurry into the mould, standing for forming, and then performing demoulding and drying to obtain a cutter green body; calcining the cutting tool green body to obtain the zirconia ceramic cutter. Through adoption of the preparation method, toxicity generated in the preparation process to the environment and an operator can be eliminated.

Description

technical field [0001] The invention relates to the technical field of ceramic gel injection molding, in particular to a method for preparing zirconia ceramic cutters based on a gel injection molding process. Background technique [0002] At present, with the rapid development of modern industrial technology, higher requirements are placed on the performance of the required materials. Traditional metal materials are no longer suitable for high-tech fields in terms of hardness, wear resistance, and high temperature resistance. Therefore, many scholars have begun to seek solutions to ceramic materials. Ceramic material is the material with the best rigidity and the highest hardness among engineering materials, and its compressive strength is very high. Moreover, ceramic materials generally have a high melting point, and have good chemical stability in a high-temperature environment, and have good corrosion resistance to acids, alkalis, and salts. Ceramics have low thermal co...

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Problems solved by technology

[0006] However, the traditional gel injection molding process still has the following defects: due to the toxicity of monomeric acrylamide, while ensuring the strength of the green body, it will also pollute the environment and pose a threat to the personal health of operators

In addition, monomeric acrylamide may be affected by oxygen during the polymerization process, causing problems such as cracking or peeling of the green body, and the controllability of the molding process is poor.

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