Preparation method of tantalum boride powder
A tantalum boride and powder technology, which is applied in the field of ceramic powder preparation, can solve the problem of uneven mixing of tantalum pentoxide powder and carbon black or graphite powder, incomplete reduction of tantalum pentoxide, carbon black or graphite powder The problem of low powder activity, etc., achieves the effect of low production cost, good powder sintering performance, and low powder oxygen content
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Embodiment 1
[0023] 1. Raw material preparation:
[0024] The first step: tantalum pentoxide powder with a particle size of 0.1 μm, boron carbide powder with a particle size of 3 μm and B 2 o 3 The powders were uniformly mixed in a ratio of 70:14:3 to obtain raw material powder 1.
[0025] The second step: the above-mentioned raw material powder 1 and phenolic resin are mixed uniformly in a mixer mill at a weight ratio of 5:0.5, solidified at a temperature of 80° C., and then pulverized in a powder mill to make an average particle size of Raw material powder 2 of 10 μm.
[0026] The third step: the above-mentioned raw material powder 2 and the phenolic resin are mixed uniformly in a mixer mill at a weight ratio of 5:1, solidified at a temperature of 50° C., and then pulverized in a powder mill to form an average particle size of 20μm raw material powder3.
[0027] The fourth step: the above-mentioned raw material powder 3 and phenolic resin are mixed uniformly in a mixer mill at a weig...
Embodiment 2
[0034] 1. Raw material preparation:
[0035] The first step: tantalum pentoxide powder with a particle size of 2 μm, boron carbide powder with a particle size of 7 μm and 7 μm B 2 o 3 The powders were uniformly mixed at a ratio of 75:17:4.5 to obtain raw material powder 1.
[0036] The second step: the above-mentioned raw material powder 1 and phenolic resin are mixed uniformly in a mixer with a weight ratio of 5:0.75, solidified at a temperature of 90 ° C, and then pulverized in a powder mill to make a particle size of 15 μm. Raw material powder 2.
[0037] The third step: mix the above-mentioned raw material powder 2 and phenolic resin in a mixing mill with a weight ratio of 5:1.5, solidify at a temperature of 75°C, and then pulverize in a powder mill to make a raw material with a particle size of 35 μm Powder3.
[0038] Step 4: Mix the above-mentioned raw material powder 3 and phenolic resin with a weight ratio of 5:2.5 in a mixer mill, solidify at a temperature of 60°C...
Embodiment 3
[0045] 1. Raw material preparation:
[0046] The first step: tantalum pentoxide powder with a particle size of 3 μm, boron carbide powder with a particle size of 10 μm and 10 μm B 2 o 3 The powders were uniformly mixed in a ratio of 80:20:6 to obtain raw material powder 1.
[0047] The second step: the above-mentioned raw material powder 1 and phenolic resin are mixed uniformly in a mixer mill at a weight ratio of 5:1, solidified at a temperature of 100 ° C, and then pulverized in a powder mill to form a particle size of 20 μm. Raw material powder 2.
[0048] The third step: mix the above-mentioned raw material powder 2 and phenolic resin in a mixing mill with a weight ratio of 5:2, solidify at a temperature of 100°C, and then pulverize in a powder mill to make a raw material with a particle size of 50 μm Powder3.
[0049] Step 4: Mix the above-mentioned raw material powder 3 and phenolic resin in a mixing mill at a weight ratio of 5:3, solidify at a temperature of 80°C, a...
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