Preparation method of metal-based ceramic composite powder

A ceramic composite material and metal powder technology, which is applied in metal processing equipment, coating, transportation and packaging, etc., can solve the problems of difficult increase of metal content and different element distribution

Inactive Publication Date: 2019-08-27
SF DIAMOND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the second type of ceramic powder wrapped with a metal layer, the distribution of elements is different microscopically. The core is a ceramic phase and the outer layer is metal. At the same time, the metal coating is generally thin, and it is difficult to increase the metal content.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A powder preparation method of an iron-based alumina composite material, the steps are as follows:

[0023] 1) Take 1-6μm Al according to the mass ratio of 1:4 2 o 3 Powder, 1-4μm Fe powder and paraffin

[0024] 2) Electroless coating (Al 2 o 3 The wetting contact angle between Fe phase and Fe phase is greater than 90°, the interface bonding ability between the two is poor, and a good composite material cannot be formed)

[0025] The particle size range is used for electroless nickel plating, and the Al 2 o 3 The powder and the nickel plating solution are mixed and kept in a water bath at a temperature of 60°C for 60 minutes to form an Al 2 o 3 The surface is evenly covered with a layer of Ni, specifically, the nickel plating solution is a commercially available product.

[0026] 3) Wet grinding treatment

[0027] Al 2 o 3 Mix the powder with Fe powder and paraffin evenly, and perform ball milling for 10 hours according to the ball-to-material ratio of 0.5:1 ...

Embodiment 2

[0037] A powder preparation method of Co-based WC composite material, the steps are as follows:

[0038] 1) Take 5-10μm WC powder, 5-10μm Co powder and paraffin according to the mass ratio of 3:17;

[0039] 2) Wet grinding treatment

[0040] Mix WC powder with Co powder and paraffin evenly, and ball mill for 15 hours according to the ball-to-material ratio of 1:1 to prepare the mixture;

[0041] 4) Spray granulation

[0042] Spraying and granulating the wet-milled mixture under the condition of atomization air pressure of 1Mpa to obtain granules;

[0043] 5) Dewaxing treatment

[0044] Dewax the spray granulated particles at 600°C for 2 hours;

[0045] 6) Sintering

[0046] The particles after dewaxing treatment were sintered at 1000°C for 2.5h to obtain the powder of Co-based WC composite material;

[0047] 7) Extension screening

[0048] The sintered powder is classified by a sieving machine, and the required powder is separated. After testing, the elements in the pow...

Embodiment 3

[0051] A powder preparation method of a nickel-based alumina composite material, the steps are as follows:

[0052] 1) Take 10-20μm Al according to the mass ratio of 1:9 2 o 3 Powder, 10-20μm Ni powder and paraffin

[0053] 2) Wet grinding treatment

[0054] Will Al 2 o 3 Mix the powder with Ni powder and paraffin evenly, and perform ball milling for 20 hours according to the ball-to-material ratio of 1.5:1 to obtain the mixture;

[0055] 4) Spray granulation

[0056] Spraying and granulating the wet-milled mixture under the condition of atomization air pressure of 0.5Mpa to obtain granules;

[0057] 5) Dewaxing treatment

[0058] Dewax the spray granulated particles at 600°C for 2 hours;

[0059] 6) Sintering

[0060] The particles after dewaxing treatment were sintered at 1000°C for 2.5 hours to obtain the powder of nickel-based alumina composite material;

[0061] 7) Extension screening

[0062] The sintered powder is classified by a sieving machine, and the requir...

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Abstract

The invention belongs to the field of composite preparation, and particularly relates to a preparation method of metal-based ceramic composite powder and a product. Ceramic powder, metal powder and abinding agent are subjected to wet grinding and mixing according to the mass proportion of (5-90):(10-90):(1-5), binding agent removal treatment is carried out after atomization and granulation, and granules generated after binding agent removal treatment are sintered. The process is simple, a metal phase and a ceramic phase of the prepared powder are combined closely, the variety of composite phases is rich, the degree of sphericity of the powder granules is high, flowability is good, the granularity is adjustable, and element distribution is uniform.

Description

technical field [0001] The invention belongs to the field of composite material preparation, and in particular relates to a method for preparing metal matrix ceramic composite material powder. Background technique [0002] Metal-matrix ceramic composites are composed of a metal matrix and a ceramic phase. Therefore, this material not only has the advantages of shock resistance and good toughness of metals, but also has the advantages of wear resistance and corrosion resistance of ceramics. Therefore, metal-matrix ceramic composites are receiving more and more attention. more extensive attention. However, with the continuous deepening of the application of this kind of composite material, new requirements are put forward for the metal matrix ceramic composite material, and the most important one is the powder preparation process of the metal matrix ceramic composite material powder. [0003] The powder preparation technologies for both metal and ceramic materials are relativ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/05C22C33/02C22C32/00C22C29/00B22F1/00B22F1/02
CPCC22C1/05C22C33/02C22C32/00C22C29/00C22C1/051B22F2998/10B22F1/17B22F1/10B22F2009/043B22F9/026B22F3/1021
Inventor 王力强方海江
Owner SF DIAMOND CO LTD
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