Preparation method of rare earth composite material

Abstract

The invention discloses a preparation method of a rare earth composite material, the chemical formula of the rare earth composite material is R-H-M, R-H exists in the form of a rare earth hydride, R is selected from at least one of lanthanide rare earth elements and Y elements, M is selected from at least one of W or Mo, and M is selected from at least one of Y and Y elements. The preparation method comprises the following steps: mixing M powder and a forming agent in a mixer; carrying out compression molding on the mixed M powder; degreasing and sintering the formed green body, and cooling along with a furnace to obtain an M framework with the porosity of 10-40%; immersing the M skeleton into a molten liquid of R for infiltration treatment, and separating the M skeleton after infiltration treatment from redundant R; and cooling the obtained M framework, and carrying out heat treatment in a hydrogen atmosphere to prepare the rare earth composite material. The rare earth composite material disclosed by the invention has high energy release and can realize efficient energy release in an oxygen-free environment, and the application environment of a metal energy release material is remarkably improved.

Description

technical field [0001] The invention relates to metal materials, in particular to a preparation method of rare earth composite materials. Background technique [0002] For the currently known metal energy release materials, the energy release mechanism is that an element that is easier to react with oxygen reacts with oxygen, releasing a large amount of heat; the second is the reaction between metal and metal or between metal and intermediate products. At present, metal energy release materials mainly use Zr, Al and other highly active elements as the main energy release elements, and achieve combustion effect in an environment with high air or oxygen content, but usually in low-pressure oxygen-deficient, underwater and other environments. poor, and its mechanical properties are insufficient, making it difficult to use in structural components. How to prepare an energy-releasing metal that can achieve high-efficiency energy release in an oxygen-free environment, has strong ...

AI Technical Summary

Problems solved by technology

At present, metal energy-releasing materials mainly use highly active elements such as Zr and Al as the main energy-releasing elements, which achieve combustion effects in environments with high air or oxygen content, but usually release energy in low-pressure anoxic and underwater environments. Poor, and its mechanical properties are insufficient, it is difficult to be used in structural parts

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