1Experimental

1.1 materials and equipment

Al2O3: 99% or more, and 325 mesh Acetylene black: purity of 99% or more, an average particle size 30nm Graphite: size 45-500um (325 mesh -35 mesh), the carbon content of 8-99.9% nano-Al powder: more than 99%, with an average particle size of 50nm. SL1001 electronic balance, Max = 1000.0g, d = 0.1g 769YP-40C powder tablet press X-ray diffraction High-temperature sintering microwave: Microwave output power 4kW, rated output frequency 2.45GHz. High-temperature microwave sintering Lang peak metal production.

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