Strong ultrasound assisted method for preparing highly dense B-Ti-C system ceramic with uniform structure

Abstract

The invention discloses a strong ultrasound assisted method for preparing a highly dense B-Ti-C system ceramic with a uniform structure. The density of a highly dense B-Ti-C system ceramic is 91.3+ / -0.3%. The preparation method of the ceramic includes adding Ti powder whose particle sizes are 50 nm and purity > / = 99.99% into B4C powder whose particle sizes are 50 nm and purity > / = 99.7% (B4C : Ti= 95 : 5, wt%) to prepare fluffy particles with about 15-20 um through a dry type granulator; filling the granulated fluffy ITO particles into a die to place under calm pressure; adjusting the pressure of an oil hydraulic press; setting the internal pressure intensity of the die as 400 MPa, 600 MPa, 800 MPa, 1,000 MPa, 1,200 MPa and 1,500 MPa; forming a biscuit sample whose density is higher than53.4+ / -0.2% by introducing ultrasound with power P=3Kw under concussion; and performing sintering for 2.5 hours under a temperature of 2,100 DEG C so that the ceramic can be prepared. The prepared B-Ti-C system ceramic is uniform in microstructure and fine in crystal grain, so that the usage value of the ceramic can be enhanced.

Description

technical field [0001] The invention designs a method for preparing ceramics, and in particular relates to a method for preparing high-density B-Ti-C system ceramics with uniform structure. Background technique [0002] Due to their excellent properties such as high strength, high hardness, corrosion resistance, wear resistance, chemical stability and biocompatibility, special ceramic materials have been widely used in energy, aviation, machinery, chemical industry, electronics, semiconductor, medicine and other fields. More and more applications. Due to the problems of complicated process equipment, long production time, and high production cost in the manufacture of complex-shaped precision special ceramics by traditional ceramic manufacturing processes, the preparation of special ceramics by traditional ceramic manufacturing processes has been unable to keep up with the growing research and development of special ceramic products today. and usage requirements. Especiall...

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Problems solved by technology

[0007] The purpose of the present invention is to provide a strong ultrasonic-assisted method to prepare high-density B-Ti-C system ceramics with uniform structure, so as to solve the problem that complex and precise ceramic special-shaped parts cannot be produced in the current market proposed by the above-mentioned background technology. It also cannot meet the problem of firing high-density ceramics

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