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Nickel-copper-iron-silicon (Ni-Cu-Fe-Si) porous alloy and preparation method thereof

A ni-cu-fe-si alloy technology, applied in the field of porous materials, can solve the problems of low porosity, low mechanical properties, easy oxidation, etc.

Inactive Publication Date: 2012-05-23
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is similar to the patent KR20070010829 (A), but the disadvantage is that the composition is not easy to control precisely, and the mechanical properties are not high
[0007] The British patent with the publication number GB 1013375 introduces a porous alloy material prepared by using an organic bonding metal mixture. The disadvantage of this invention is that the particle size of the bonding metal is required to be below 10nm, and it is easy to form clusters when mixed with the matrix material. Clusters, and easy to oxidize during mixing and sintering
The porosity of the prepared product is low, and most of the formed pores are closed, and the filtering effect is not good
[0008] At present, the research on Ni-Cu-Fe-Si porous alloy is still in its infancy, and there are few reports on its preparation method and application.

Method used

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  • Nickel-copper-iron-silicon (Ni-Cu-Fe-Si) porous alloy and preparation method thereof
  • Nickel-copper-iron-silicon (Ni-Cu-Fe-Si) porous alloy and preparation method thereof
  • Nickel-copper-iron-silicon (Ni-Cu-Fe-Si) porous alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: Mix nickel powder, copper powder, iron powder and silicon powder uniformly according to the atomic percentage of 65:30:3:2, and place them in a planetary ball mill for ball milling for 8h-12h. Stearic acid or alcohol is added as a process control agent during the ball milling process to prevent the alloy powder from agglomerating or sticking to the wall of the ball milling tank during the ball milling process. After the ball mill is completely cooled, take out the alloy powder after ball milling. The alloy powder after ball milling was observed under SEM, and the particle morphology was as follows: figure 1 shown. Alcohol is used as the process control agent, and the performance of the powder after ball milling is relatively excellent. Therefore, alcohol was used as a process control agent in subsequent experiments. The ball-milled alloy powder is uniformly mixed with the overhead material (NaCl), and the volume fraction of NaCl is 45%. The uniformly mixe...

Embodiment 2、3

[0030] The procedure is the same as in Example 1, except that the volume fractions of NaCl are 65% and 80% respectively, the measured porosities are 52.7% and 69.3% respectively, and the final compressive strengths are 48MPa and 90MPa respectively.

Embodiment 4、5

[0032] The procedure is the same as in Example 2, except that the final sintering temperatures are 1000°C and 1100°C respectively, the measured porosity is 55.6%, 51.3%, and the final compressive strength is 83MPa, 88MPa.

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Abstract

The invention discloses a nickel-copper-iron-silicon (Ni-Cu-Fe-Si) porous alloy and a preparation method thereof, which relate to a porous material. The preparation method is simple and practical, and the prepared product has the porosity of 45 to 80 percent and the compression strength of 80 to 100MPa. The porous alloy comprises the following raw materials in the atomic percent: 65 percent of Ni, 30 percent of Cu, 3 percent of Fe and 2 percent of Si. The preparation method comprises the following steps of: mixing Ni powder, Cu powder, Fe powder and Si powder and performing ball milling to obtain alloy powder; mixing the alloy powder after the ball milling and a material to be built on stilts to obtain mixed powder; placing the mixed powder into a ball milling tank and uniformly mixing invacuum; tabletting the mixed powder to obtain a green body; soaking the green body into water, heating the water, cleaning the green body, and dissolving residual sodium chloride (NaCl); and soaking the cleaned sample into the water, heating the water, detecting whether the NaCl in the sample is cleaned or not, and drying the cleaned sample to obtain the Ni-Cu-Fe-Si porous alloy.

Description

technical field [0001] The present invention relates to a porous material, in particular to a Ni-Cu-Fe-Si porous alloy which uses NaCl as the overhead material and controls the porosity and mechanical properties of the material by controlling the volume fraction of NaCl, the holding temperature and the holding time. and its preparation method. Background technique [0002] Monel alloy (1.Kyung-Ho Park, Debasish Mohapatra, B.Ramachandra Reddy, etal.Hydrometallurgy.86(2007)164-171) is a Ni-Cu alloy based on metal Ni, which is a nickel-based corrosion-resistant alloy The most widely used alloy. Monel alloys of different systems can be obtained by adding a small amount of other metal or non-metal elements to the nickel-copper binary alloy system. The alloy has excellent corrosion resistance, friction resistance, high strength and hardness, and good processing performance, so it is especially suitable for corrosive environments and occasions with severe friction. [0003] The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C19/00C22C1/08
Inventor 刘兴军怀震王翠萍张锦彬黄艺雄马云庆施展
Owner XIAMEN UNIV