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Powder for infiltration

A powder and infiltration technology, applied in the field of powder for infiltration, can solve the problem of high infiltration rate and other problems, and achieve the effect of increasing density, excellent infiltration, and improving strength

Active Publication Date: 2011-07-20
FUKUKA METAL FOIL & POWDER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But despite this, it cannot be said that a sufficiently high value has been obtained regarding the infiltration rate

Method used

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  • Powder for infiltration

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] As a base material, the following green compact was used: 13.7 g of a mixed powder in which 0.8% of zinc stearate (zinc stearate) was added to iron-1.5% copper-1% carbon was molded into a prism shape of 30×12 mm, and Make its density reach 6.3g / cm 3 . As the infiltrating material, the following powder compact is used: TiO with an average particle size of 0.5 μm is added to the powder of copper-4% iron-2.5% manganese-2% zinc-0.07% aluminum produced by the atomization method 2 1.0% powder, and 3.15 g of this mixed powder (the amount of infiltrated material of 80 vol% relative to the pores of the substrate) was formed into a prism shape of 30×12 mm at a pressure of 500 MPa.

[0027] The infiltration material compact is mounted on the substrate compact and a stage of infiltration is performed. After dewaxing by heating at 550°C for 30 minutes, it was heated at 1110°C for 30 minutes. The atmosphere in the sintering furnace was a mixed gas atmosphere in which the ratio of ...

Embodiment 2

[0029] As the substrate, the substrate produced by the same method as in Example 1 was used. As the infiltrated material, a green compact is used in which TiO with an average particle size of 0.5 μm is added to a powder of copper-4% iron-2.5% manganese-2% zinc-0.07% aluminum produced by the atomization method 2 0.6% powder, and 3.15 g of this mixed powder (the amount of infiltrated material of 80 vol% relative to the pores of the substrate) was molded into a prism shape of 30×12 mm at a pressure of 500 MPa. The above-mentioned green compact was infiltrated in the same manner as in Example 1. The characteristics of the obtained infiltrated body are shown in Table 1 together.

Embodiment 3

[0031] As the substrate, the substrate produced by the same method as in Example 1 was used. As the infiltrated material, a green compact is used in which TiO with an average particle size of 0.5 μm is added to a powder of copper-4% iron-2.5% manganese-2% zinc-0.07% aluminum produced by the atomization method 2 0.3% powder, and 3.15 g of this mixed powder (the amount of infiltrated material of 80 vol% relative to the pores of the base material) was formed into a prism shape of 30×12 mm at a pressure of 500 MPa. The above-mentioned green compact was infiltrated in the same manner as in Example 1. The characteristics of the obtained infiltrated body are shown in Table 1 together.

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Abstract

The objective of the invention is to provide a powder for copper infiltration material to obtain high infiltration rate of Fe based material. The powder includes raw material powder by weight percentage: 2-7% of Fe, 1-7% of Mn, 0.5-5% of Zn, 0.03-0.1of Al, Cu as the rest, and 0.1-1% of at least one oxide of mixing Al, Si, Zr, Ti and Mg.

Description

technical field [0001] The present invention relates to a powder for infiltration (copper-based alloy powder or copper-based mixed powder) that is infiltrated into a formed body of iron and iron-based alloy powder or iron-based mixed powder. Background technique [0002] In the manufacture of iron-based sintered parts, the technology of infiltration of copper alloys has been established in order to increase the density, strength, and toughness of machine parts. Generally, in the infiltration method, iron-based compacts or sintered compacts having pores are brought into contact with compacts of copper alloys having a lower melting point (referred to as infiltration materials) to be heated. The molten infiltrating material infiltrates into the base material by capillary phenomenon, and the infiltrating body improves mechanical properties due to the decrease of pores, the increase of density and the effect of sealing holes. In addition, due to the alloying reaction between the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C10/52
Inventor 寺居臣治小山忠司
Owner FUKUKA METAL FOIL & POWDER CO LTD
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