Silicon oxide ceramic mold core and preparation method thereof

Abstract

The invention discloses a silicon oxide ceramic mold core and a preparation method thereof, relates to a ceramic mold core and a preparation method thereof, and aims to solve the problems that a conventional ceramic mold core is low in sintering bending resistance and poor in high-temperature property. The silicon oxide ceramic mold core is prepared from ceramic slurry and a plasticizer in a mass ratio of 100:(18-22) through mixing and sintering. The preparation method comprises the following steps: I, uniformly mixing paraffin, beewax and polyethylene so as to obtain a plasticizer; II, uniformly stirring quartz powder glass, zircon powder, nano silicon oxide and zirconium oxide so as to obtain the ceramic slurry; III, adding the ceramic slurry into the plasticizer so as to obtain a prefabricated material; and IV, sintering after pressing, thereby obtaining the silicon oxide ceramic mold core. The bending resistance of the silicon oxide ceramic mold core disclosed by the invention has a bending resistance of 17.33MPa and a high-temperature deflection of 0.291mm showing a good high-temperature property, and the operation is simple so that experiment time is greatly shortened.

Description

technical field [0001] The invention relates to a ceramic core and a preparation method thereof. Background technique [0002] Nowadays, the research and development speed of fighter jets in the world is getting faster and faster. The fourth-generation and fourth-and-a-half-generation fighter jets of Western developed countries headed by the United States have been unveiled one after another. Among them, advanced aero engines such as F119, F135 and F136 are quite attractive. people pay attention. The world's aviation technology is advancing to new heights at a rapid speed, so our country has also adapted to today's fighter performance requirements by speeding up the research and development of fourth-generation aircraft. At present, aeroengines are known as the "heart of fighter jets", and all countries regard them as core secrets to keep them secret. Because the engine will directly affect the performance, reliability and economy of the aircraft, it can be used as an impo...

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