Aluminum chromium zirconium nitride composite ceramic material and preparation method thereof

Abstract

The invention relates to an aluminum chromium zirconium nitride composite ceramic material and a preparation method thereof. The chemical composition (W) of the aluminum chromium zirconium nitride composite ceramic material is as follows: (Al2O3.Cr2O3) is greater than or equal to 40%, ZrN is greater than or equal to 6%, TiN is greater than or equal to 8%, ALN is greater than or equal to 40%, and Fe2O3 is less than or equal to 1.68%. The preparation method comprises steps of firstly smashing raw material chrome corundum, then deironing, magnetic separating and screening, after mixing, ageing for 25 minutes, molding through compressing, pre-nitriding the product, machining, then transmitting into a high temperature kiln, enriching oxygen to 1450DEG C and firing, then stopping enriching the oxygen, inletting ammonia gas, generating high temperature 1950-2000DEG C through nitriding reaction (nitriding while sintering), and finishing the reaction. The material and sectional material thereof are used in multiple high temperature states like high temperature wear resisting porcelain tubes, glass kilns, heavy metal molten pools, oil field hot blast heaters, steel ladle bottom blowing furnaces, electric power, aviation and the like, can greatly prolong the service life.

Description

technical field [0001] The invention relates to a high-temperature ceramic material and a manufacturing method thereof, in particular to an aluminum nitride-chromium-zirconium composite ceramic material and a manufacturing method thereof. Background technique [0002] The high-temperature materials used in industrial ceramics, electric power, aviation, heavy metal smelting, ladle bottom blowing furnace, petroleum hot blast furnace and other processes have poor comprehensive performance, poor oxidation resistance and low refractoriness. Improper material selection directly affects the service life, too high porosity, poor thermal shock resistance, poor corrosion resistance, and poor Fe0 slag resistance, which directly affects the profitability of the enterprise and greatly wastes resources. Contents of the invention [0003] The object of the present invention is to provide a kind of aluminum chromium zirconium nitride composite ceramic material and preparation method there...

AI Technical Summary

Problems solved by technology

[0002] The high-temperature materials used in industrial ceramics, electric power, aviation, heavy metal smelting, ladle bottom blowing furnace, petroleum hot blast furnace, etc. have poor comprehensive performance, poor oxidation resistance and low refractoriness

Improper material selection will directly affect the service life. The pores are too high, the thermal shock resistance is poor, the corrosion resistance is poor, and the Fe0 slag resistance is poor, which directly affects the profit of the enterprise and greatly wastes resources.

Images