Microwave reaction synthesis method for endogenous metal matrix composite material
A composite material and microwave reaction technology, applied in the field of microwave reaction synthesis method, to achieve the effect of purifying the matrix, shortening the preparation cycle, and refining the structure
Inactive Publication Date: 2010-03-10
NANJING UNIV OF SCI & TECH
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The invention discloses a microwave reaction synthesis method for an endogenous metal matrix composite material, which comprises the following steps: preparing a reaction sample; filling the sample, namely filling the pressed sample into a reaction device, and filling an SiC wave-absorbing agent around the sample; pumping vacuum; synthesizing microwave, namely regulating microwave input power to alower limit value, closing a gate and powering on the sample; preserving heat, namely when the color of the reaction sample is suddenly changed and simultaneously the temperature change curve recorded by far infrared rays is hastily raised to produce sharp steep peaks, reducing the microwave input power to preserve the heat, and stopping microwave input after the heat is preserved for a certain time; and discharging the sample from a furnace, namely after a vacuum furnace is cooled, taking the reaction device out, and taking the reaction sample out from the reaction device to obtain the endogenous composite material. The microwave reaction synthesis method has the advantages of simple process operation, safety and reliability, energy conservation and time saving, environmental protectionand simplified operation process, can greatly reduce the energy consumption, saves the energy as high as 70 to 90 percent, and shortens the preparation period which is generally about 15 minutes.
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