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ZTA ceramic net film modified nano powder metallurgy material and preparation method thereof

A technology of powder metallurgy and nano-powder, which is applied in the field of ZTA ceramic omentum modified nano-powder metallurgy materials and its preparation, can solve the problems of plastic toughness and damage tolerance reduction, achieve average particle size reduction, reduce stress concentration, The effect of multiple energy dissipation

Active Publication Date: 2022-07-29
苏州诚亮粉末冶金有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such a uniformly distributed structure can increase the strength and stiffness of the material, but its ductility and damage tolerance drop sharply

Method used

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  • ZTA ceramic net film modified nano powder metallurgy material and preparation method thereof
  • ZTA ceramic net film modified nano powder metallurgy material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A preparation method of ZTA ceramic mesh membrane modified nano powder metallurgy material, comprising the following steps:

[0031] (1) Put the composite metal nano-powder into the mixer according to the proportion and evenly mix for 40min; the composite metal nano-powder includes the following components: nickel powder 0.4%, copper powder 0.5%, aluminum powder 0.3%, zinc stearate 0.75%, The balance of pre-alloyed iron powder; wherein, the pre-alloyed iron powder is a nickel-chromium-iron alloy, the content of nickel is 0.5wt%, and the content of chromium is 0.8wt%;

[0032] (2) Lay the composite metal nano-powder into a special forming press for powder metallurgy with a thickness of 0.2mm;

[0033] (3) Continue to lay a layer of ZTA ceramic mesh with a thickness of 0.05mm and a porosity of 38%;

[0034] (4) Lay a layer of composite metal nano-powder with a thickness of 0.2mm;

[0035] (5) Compression molding under 700MPa pressing force;

[0036] (6) vacuum sinterin...

Embodiment 2

[0045] A preparation method of ZTA ceramic mesh membrane modified nano powder metallurgy material, comprising the following steps:

[0046] (1) Put the composite metal nano-powder into the mixer according to the proportion and evenly mix for 40min; the composite metal nano-powder includes the following components: nickel powder 0.4%, copper powder 0.5%, aluminum powder 0.3%, zinc stearate 0.75%, The balance of pre-alloyed iron powder; wherein, the pre-alloyed iron powder is a nickel-chromium-iron alloy, the content of nickel is 0.5wt%, and the content of chromium is 0.8wt%;

[0047] (2) Lay the composite metal nano-powder into a special forming press for powder metallurgy with a thickness of 0.2mm;

[0048] (3) Continue to lay a layer of ZTA ceramic mesh with a thickness of 0.1mm and a porosity of 38%;

[0049] (4) Lay a layer of composite metal nano-powder with a thickness of 0.2mm;

[0050] (5) Compression molding under 700MPa pressing force;

[0051] (6) vacuum sintering...

Embodiment 3

[0060] A preparation method of ZTA ceramic mesh membrane modified nano powder metallurgy material, comprising the following steps:

[0061] (1) Put the composite metal nano-powder into the mixer according to the proportion and evenly mix for 40min; the composite metal nano-powder includes the following components: nickel powder 0.4%, copper powder 0.5%, aluminum powder 0.3%, zinc stearate 0.75%, The balance of pre-alloyed iron powder; wherein, the pre-alloyed iron powder is a nickel-chromium-iron alloy, the content of nickel is 0.5wt%, and the content of chromium is 0.8wt%;

[0062] (2) Lay the composite metal nano-powder into a special forming press for powder metallurgy with a thickness of 0.2mm;

[0063] (3) Continue to lay a layer of ZTA ceramic mesh with a thickness of 0.2mm and a porosity of 38%;

[0064] (4) Lay a layer of composite metal nano-powder with a thickness of 0.2mm;

[0065] (5) Compression molding under 700MPa pressing force;

[0066] (6) vacuum sintering...

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Abstract

The invention provides a ZTA ceramic net film modified nano powder metallurgy material. The ZTA ceramic net film modified nano powder metallurgy material comprises at least one ZTA ceramic net film layer and a plurality of composite metal nano powder layers. The ZTA ceramic net film layers and the composite metal nano powder layers are arranged at intervals; the thickness of the ZTA ceramic net film layer is 0.05-0.3 mm, and the porosity is 33-38%; the thickness of the composite metal nano powder layer ranges from 0.2 mm to 0.6 mm. The enhancement mode is different from that in the prior art, a layer-by-layer laying mode is adopted, a large number of microcracks are introduced into a metal-ceramic interface, the stress concentration degree of the material can be effectively reduced through dispersed distribution of the microcracks at the interface, meanwhile, more energy dissipation can be achieved through deflection of the large number of microcracks in the expansion process, and therefore the heat dissipation performance of the material is improved. Further, the crack propagation driving force is effectively weakened, so that the composite material has certain plasticity and toughness while the material strength is improved due to the unique multi-interface structure of the composite material.

Description

technical field [0001] The invention relates to the field of powder metallurgy materials, in particular to a ZTA ceramic mesh membrane modified nanometer powder metallurgy material and a preparation method thereof. Background technique [0002] Ceramic particle reinforced metal matrix composites integrate many excellent properties of metal and ceramic materials. They have high hardness, high strength, good wear resistance and corrosion resistance of ceramic materials without compromising the good plastic and toughness of metal materials. It is one of the research hotspots of metal matrix composites at home and abroad. The main preparation methods of particle reinforced metal materials are: stir casting method, injection molding method, pressure infiltration method and powder metallurgy method. Among them, powder metallurgy has a flexible process and strong designability, which can achieve good composite of matrix and reinforcing particles, reduce uneven particle distributio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C47/06C22C47/14C22C49/08C22C49/14B22F7/04C22C101/06C22C47/20
CPCC22C47/06C22C47/14C22C49/08C22C49/14B22F7/04C22C47/20Y02P10/25
Inventor 张卫国许国男叶建方
Owner 苏州诚亮粉末冶金有限公司
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