Fine-grained copper fiber, pumice and magnesium alloy composite material and preparation method thereof

A composite material and copper fiber technology, applied in the field of metal materials, can solve problems such as complex processes, and achieve the effects of simple preparation process, low production cost and excellent damping performance

Inactive Publication Date: 2012-08-22
淮安市清河区科技转化服务中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this invention, 3-20% by volume of electroless nickel-plated short carbon fibers are added to the magnesium matrix. Although the matrix is ​​strengthened and the damping performance is endowed with better performance, its damping performance is better than that of pure magnesium, which can reach High damping range of 0.015, but the process is more complicated

Method used

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  • Fine-grained copper fiber, pumice and magnesium alloy composite material and preparation method thereof
  • Fine-grained copper fiber, pumice and magnesium alloy composite material and preparation method thereof
  • Fine-grained copper fiber, pumice and magnesium alloy composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Preparation of fine-grained copper fiber: by weight percentage: Al is 6%, V is 0.5%, Zn is 20%, Pr is 0.05%, Nd is 0.0039%, Dy is 0.003%, and the rest is Cu for batching;

[0027] The raw material is melted in a liquid riser with a heating device to form an alloy liquid, and the heating temperature is 1150-1200°C. The lower part of the riser pipe is equipped with a plunger, driven by the power unit, the plunger can move up and down along the riser pipe. The liquid is pulled out to form fine-grained copper fibers, and the runner adopts a water-cooled copper alloy runner with a flange on the rim. The alloy liquid contacts the flange of the rotating water-cooled copper alloy runner through the liquid riser, and the flange of the water-cooled copper alloy runner pulls the alloy liquid out to form fine-grained copper fibers. The linear speed of the runner flange is 22-24m / s , Turn on the water-cooling system before the runner starts to run, and the temperature of the water ...

Embodiment 2

[0031] The content of the magnesium alloy matrix by weight percentage: Al is 8%, Zn is 4%, Sn is 1%, Pr is 0.15%, Nd is 0.09%, Dy is 0.09%, and the rest is Mg.

[0032] Fine-grained copper fiber by weight percentage: Al is 8%, V is 1%, Zn is 25%, Pr is 0.15%, Nd is 0.09%, Dy is 0.09%, and the rest is Cu.

[0033]In the preparation of the fine-grained copper fiber pumice preform: the volume ratio of the fine-grained iron-antimony fiber to the pumice is 1:1. The fine-grained copper fiber and pumice are controlled to account for 45% of the volume percentage of the composite material.

[0034] The preparation process is the same as in Example 1.

Embodiment 3

[0036] The content of the magnesium alloy matrix by weight percentage: Al is 6%, Zn is 3%, Sn is 0.8%, Pr is 0.1%, Nd is 0.009%, Dy is 0.009%, and the rest is Mg.

[0037] Fine-grained copper fiber by weight percentage: Al is 7%, V is 0.8%, Zn is 22%, Pr is 0.09%, Nd is 0.009%, Dy is 0.009%, and the rest is Cu.

[0038] In the preparation of the fine-grained copper fiber pumice preform: the volume ratio of the fine-grained iron-antimony fiber to the pumice is 1:1. Control the fine-grained copper fiber and pumice to account for 55% of the volume percentage of the composite material.

[0039] The preparation process is the same as in Example 1.

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Abstract

The invention provides a lightweight fine-grained copper fiber, pumice and magnesium alloy composite material and a preparation method thereof, and the composite material has high strength and excellent damping performance. The method has simple process and low production cost and is applicable to industrial production. The composite material takes magnesium alloy as a matrix, fine-grained copperfiber and pumice micro-particles are distributed on the matrix, and the grain size of the fine-grained copper fiber is 1-10 mu m; the two of the fine-grained copper fiber and pumice accounts for 45%-55% of the composite material by volume percent, wherein the weight ratio of the fiber to the pumice is 1:1; and the magnesium alloy matrix comprises the following chemical components by weight percent: 4%-8% of Al, 2%-4% of Zn, 0.5%-1% of Sn, 0.05%-0.15% of Pr, 0.003%-0.09% of Nd, 0.03%-0.09% of Dy and the balance of Mg.

Description

1. Technical field [0001] The invention belongs to the field of metal materials, and relates to a high-damping fine-grain copper fiber pumice-magnesium alloy composite material and a preparation method thereof. 2. Background technology [0002] At present, in the field of metal materials, the damping effect of fibers on magnesium has been paid attention to. [0003] CN200510027321.1 relates to a method for improving the damping performance of fiber-reinforced magnesium-based composite materials belonging to the technical field of composite materials, comprising the following steps: (1) removing the glue layer on the surface of carbon or graphite fibers; (2) chemical vapor deposition of pyrolytic carbon Coating: Using alkane gas with high carbon content as the pyrolysis gas, the carbon produced by pyrolysis is deposited on the surface of the degummed carbon or graphite fiber to obtain a simple pyrolytic carbon coating, and the thickness of the carbon coating ranges from 0.1 t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C23/02C22C49/04C22C49/14C22C32/00C22C1/04C22C47/08B22D11/06C22C111/00
Inventor 赵浩峰王玲裴必龙
Owner 淮安市清河区科技转化服务中心
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