36results about How to "Good pore size uniformity" patented technology

The invention discloses a preparation method of foamed aluminum alloy, and belongs to the field of porous metal materials. The method comprises the following steps that the surfaces of foaming agent particles are coated with a metal layer to prepare composite particles; the composite particles is uniformly mixed with an aluminum powder to prepare mixed powder, wherein the mass fraction of the foaming agent particles is 0.6 wt%-2 wt%; hot-pressing densification is performed on the mixed powder so as to obtain a foamed prefabricated part; the foamed prefabricated part is put into a heating furnace for heating and foaming, so that the prefabricated part is fully expanded to obtain the foamed aluminum alloy. The foamed aluminum alloy manufactured by the method disclosed by the invention is good in hole pattern, uniform in bore diameter and small in pore wall defect, so that the strength, the toughness and the elasticity modulus of the foamed aluminum are relatively high, and heat treatmentintensity potential is high as well; then the types and the contents of the alloy elements can be flexibly controlled by adjusting the thickness and the composition of a metal coating layer, so thata large space is provided for the performance design of the foamed aluminum; and in addition, the foaming expansion rate can be improved as well, the foaming temperature can be reduced, and the energyconsumption can be reduced.

A deposition mask according to an embodiment includes a metal plate having a first surface and a second surface, the metal plate including iron and nickel, having a thickness of 15 [mu] m to 30 [mu] m, the metal plate including a first surface layer having a depth of 20% or less of the thickness of the metal plate and a second surface layer having a depth of 20% or less of the thickness of the metal plate, when the diffraction intensities with respect to the (111), (200) and (220) crystal planes of the first surface layer are defined as I (111), I (200) and I (220), respectively, the ratios of the diffraction intensities of I (220), I (200) and I (220) are defined by Formula 1, Formula 2 and Formula 3, respectively, [Formula 1] A = I (220) / (I (200) + I (220) + I (111)) [Formula 2] B = I (200) / (I (200) + I (220) + I (111)) [Formula 3] C = I (111) / (I (200) + I (220) + I (111)) A is greater than the values of B and C, the value of B is greater than the value of C, and when the ratio of B to A (B / A

A making method of an aperture connected support comprises the following steps: spraying expansion material powder particles to the aperture connected support, and expanding. The controllable adjustment of the size of the apertures of the support is realized through the making method, and the aperture connected support made in the invention has good uniformity. Porous metal materials prepared by adopting the above porous support made in the invention have the advantages of uniform distribution, arbitrary adjustment of the porosity, and wide uses.