Preparation method of tungsten-aluminum nitride-hafnium boride composite material
A composite material, a technology of hafnium boride, is applied in the field of preparation of tungsten-aluminum nitride-hafnium boride composite materials, and can solve the problem of internal stress micro-cracks, grain growth of ceramic materials, and influence on the mechanical properties of hafnium boride ceramic materials. and its application, to achieve the effect of excellent performance and avoid separation
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Embodiment 1
[0021] The preparation method of the tungsten-aluminum nitride-hafnium boride composite material in this embodiment includes the following steps:
[0022] Step 1. Put the mixed powder of tungsten powder, aluminum nitride powder and hafnium boride powder and absolute ethanol in a planetary ball mill at a volume ratio of 1:1. Ball milling and mixing for 20 hours under the same conditions to obtain a slurry; the mass percentages of tungsten powder, aluminum nitride powder and hafnium boride powder in the mixed powder are respectively: 35% of tungsten powder, 5% of aluminum nitride powder, and 60% of hafnium boride powder %; the particle size of the hafnium boride powder and the aluminum nitride powder is not more than 5 μm, the particle size of the tungsten powder is not more than 3 μm, the mass purity of the hafnium boride powder is not less than 98%, the nitride The mass purity of aluminum powder and tungsten powder is not less than 99%;
[0023] Step 2, drying the slurry desc...
Embodiment 2
[0027] The preparation method of the tungsten-aluminum nitride-hafnium boride composite material in this embodiment includes the following steps:
[0028] Step 1. Put the mixed powder of tungsten powder, aluminum nitride powder and hafnium boride powder and absolute ethanol in a planetary ball mill at a volume ratio of 1:1. Ball milling and mixing for 20 hours under the same conditions to obtain a slurry; the mass percentages of tungsten powder, aluminum nitride powder and hafnium boride powder in the mixed powder are respectively: 80% of tungsten powder, 10% of aluminum nitride powder, and 10% of hafnium boride powder %; the particle size of the hafnium boride powder and the aluminum nitride powder is not more than 5 μm, the particle size of the tungsten powder is not more than 3 μm, the mass purity of the hafnium boride powder is not less than 98%, the nitride The mass purity of aluminum powder and tungsten powder is not less than 99%;
[0029] Step 2, drying the slurry des...
Embodiment 3
[0033] The preparation method of the tungsten-aluminum nitride-hafnium boride composite material in this embodiment includes the following steps:
[0034] Step 1. Put the mixed powder of tungsten powder, aluminum nitride powder and hafnium boride powder and absolute ethanol in a planetary ball mill at a volume ratio of 1:1. Ball milling and mixing for 20 hours under the same conditions to obtain a slurry; the mass percentages of tungsten powder, aluminum nitride powder and hafnium boride powder in the mixed powder are respectively: 39% of tungsten powder, 1% of aluminum nitride powder, and 60% of hafnium boride powder %; the particle size of the hafnium boride powder and the aluminum nitride powder is not more than 5 μm, the particle size of the tungsten powder is not more than 3 μm, the mass purity of the hafnium boride powder is not less than 98%, the nitride The mass purity of aluminum powder and tungsten powder is not less than 99%;
[0035] Step 2, drying the slurry desc...
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