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Copper-base alloy/iron-base martensite alloy composite powder and method of preparing the same

A copper-based alloy and composite powder technology, which is applied in chemical instruments and methods, metal layered products, layered products, etc., can solve the problems of raw material loss, impossibility of obtaining iron-based martensitic phase, complex preparation process, etc. , to achieve a good effect of interface integration

Inactive Publication Date: 2008-10-01
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned preparation process is relatively complicated, and the loss of raw materials is serious during the process, so the industrialization is greatly restricted. At the same time, it is impossible to obtain the iron-based martensitic phase without the quenching step

Method used

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  • Copper-base alloy/iron-base martensite alloy composite powder and method of preparing the same
  • Copper-base alloy/iron-base martensite alloy composite powder and method of preparing the same
  • Copper-base alloy/iron-base martensite alloy composite powder and method of preparing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: 456g pure copper (electrolytic copper, purity is 99.99wt.%), 514g pure iron (purity is 99.9wt.%), 30g pure silicon (purity is 99.9wt.%) is placed in alumina crucible , and then put the alumina crucible into the vacuum induction furnace (power supply voltage: 110V / 220V AC; power frequency: 50-60Hz; working frequency: 150-250KHz) built in the atomization equipment, close the furnace door and evacuate to Vacuum degree in vacuum induction furnace to 1×10 -3 Pa, increase the current until the above three pure metals are completely melted into liquid, and the composition of the obtained alloy liquid is Cu-51.4Fe-3Si (wt.%). Pour the molten alloy liquid (about 1kg) into the liquid receiving hopper, and blow it with nitrogen at the moment the liquid flows into the atomization chamber, and the copper-based alloy / iron-based martensite composite powder can be obtained at the bottom of the atomization chamber body. Close the nitrogen gas flow valve and reduce the cu...

Embodiment 2

[0019] Embodiment 2: 656g pure copper (electrolytic copper, purity is 99.99wt.%), 314g pure iron (purity is 99.9wt.%), 30g pure silicon (purity is 99.9wt.%) is placed in alumina crucible , and then put the alumina crucible into the vacuum induction furnace (power supply voltage: 110V / 220V AC; power frequency: 50-60Hz; working frequency: 150-250KHZ) built in the atomization equipment, close the furnace door and evacuate to Vacuum degree in vacuum induction furnace to 1×10 -3 Pa, increase the current until the above three pure metals are completely melted into liquid, and the composition of the obtained alloy liquid is Cu-31.4Fe-3Si (wt.%). Pour the molten alloy liquid (about 1kg) into the liquid receiving hopper, and blow it with argon when the liquid flows into the atomization chamber, and the iron-based martensitic alloy / copper-based alloy can be obtained at the bottom of the atomization chamber Composite powder. Close the argon gas flow valve and reduce the current value t...

Embodiment 3

[0020] Embodiment 3: 653g pure copper (electrolytic copper, purity is 99.99wt.%), 314g pure iron (purity is 99.9wt.%), 30g pure silicon (Si, purity is 99.9wt.%), 3g coke is placed in In an alumina crucible, the steps described in Example 2 were followed to obtain an iron-based martensitic alloy / copper-based alloy composite powder. Take 50g of the composite powder and seal it in the resin, after #80, #150, #400, #800, #1500, #2000 sandpaper water grinding treatment, and then polishing with polishing paste (diamond particles, about 10μm in diameter) , in the HV-1000 Vickers hardness tester (power supply: AC220V 50Hz; diamond regular pyramidal indenter; test force: 0.245N (25gf)), the relationship between the obtained hardness and the distance from the point to the interface is as follows Figure 6 shown. On the copper-rich phase (copper-based alloy), the average hardness value is close to 200HV; on the iron-based martensitic alloy phase, the hardness value is between 500 and 600H...

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Abstract

The invention provides a copper-based alloy / iron-based martensitic alloy compound powder and a preparation method thereof, which relate to a compound powder material. The copper-based alloy / iron-based martensitic alloy compound powder which is simple and cheap and the preparation method thereof are provided. The compound powder comprises an inner core and an outer layer, wherein, the inner core is an iron-based martensitic alloy inner core or a copper-based alloy inner core, the outer layer is a copper-based alloy layer or a compound layer of an iron-based martensitic alloy layer and the copper-based alloy layer. The compound layer of the iron-based martensitic alloy layer and the copper-based alloy layer is composed by compounding the iron-based martensitic alloy layer and the copper-based alloy layer, wherein, the iron-based martensitic alloy layer is arranged at the inner layer of the compound layer and the copper-based alloy layer is arranged at the outer layer of the compound layer. Metals of copper, iron and silicon are weighted according to the preset composition of the copper-based alloy / iron-based martensitic alloy compound powder to be put into a vacuum induction furnace for being smelted to obtain alloy liquid; the smelted alloy liquid is poured into a liquid receiving bucket and inert gas is used for blowing the liquid at the instant when the liquid inflows into an atomizing chamber, and then the copper-based alloy / iron-based martensitic alloy compound powder is obtained.

Description

technical field [0001] The invention relates to a composite powder material, in particular to a copper-based alloy / iron-based martensitic alloy composite powder and a preparation method thereof. Background technique [0002] As semiconductor products and precision instruments tend to be miniaturized and functionalized, powder materials have been used more and more directly as functional materials. Therefore, in addition to the requirements for mechanical properties of powder materials, there are also requirements for their functionality. Higher and higher. Copper alloys have good electrical and thermal conductivity, and are widely used in electrical, electronic and other fields (1, Zhong Peiquan. New copper alloys-applications of electrical, electronic and mechanical components. Rare Metal Letters, 2001, 9: 9); at the same time, iron-based Martensitic alloys are widely used in petroleum, machinery, chemical industry and other industries due to their high strength, easy form...

Claims

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Application Information

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IPC IPC(8): B22F1/02B22F9/08C22C38/02B32B15/01
Inventor 王翠萍刘兴军郁炎
Owner XIAMEN UNIV
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