Preparation method of high porosity metal porous carrier materials
A carrier material, metal porous technology, applied in the direction of coating, etc., can solve the problems of low porosity of porous materials, difficult to maintain the shape of the material, collapse, etc., to achieve the effect of improving porosity and through porosity, and good performance.
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[0013] Example 1
[0014] The total amount of pore-forming agent added is 5wt%, of which carboxymethyl cellulose (CMC) and urea CO (NH 2 ) 2 The ratio is 1:3, uniformly mixed with metallic nickel powder with a particle size of less than 75μm, using mechanical compression molding, and sintering under vacuum. The final sintering temperature is 900°C and the holding time is 3.5 hours to obtain 1# sample.
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[0015] Example 2
[0016] The total amount of pore former is 10wt%, of which carboxymethyl cellulose (CMC) and urea CO (NH 2 ) 2 The ratio is 1:5, and it is uniformly mixed with metallic nickel powder with a particle size of less than 75μm. It is formed by mechanical pressing and sintered in a hydrogen atmosphere. The low temperature holding temperature is 150℃~250℃, the final sintering temperature is 850℃, and the holding time is 3.5 hours, get 2# sample.
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[0017] Example 3
[0018] The total amount of pore former is 10wt%, of which carboxymethyl cellulose (CMC) and urea CO (NH 2 ) 2 The ratio is 1:15, uniformly mixed with metallic nickel powder with a particle size of less than 45μm, using mechanical compression molding, and sintering in a hydrogen atmosphere. The low temperature holding temperature is 150℃~250℃, the final sintering temperature is 880℃, and the holding time is 2.5 Hours, get 3# sample.
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