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Finely crystalline iron-stibium fiber and pumice magnesium alloy composite material and preparation method thereof

A composite material and magnesium alloy technology, applied in the field of high damping fine-grained iron antimony fiber pumice magnesium alloy composite material and its preparation, can solve problems such as complex process and achieve the effect of enhancing supercooling capacity

Inactive Publication Date: 2012-12-26
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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  • Finely crystalline iron-stibium fiber and pumice magnesium alloy composite material and preparation method thereof
  • Finely crystalline iron-stibium fiber and pumice magnesium alloy composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Preparation of fine-grained iron-antimony fiber: by weight percentage, Sb is 5%, Cu is 0.003%, Sm is 0.003%, Gd is 0.05%, and the rest is Fe for batching; raw materials are placed in a riser with a heating device It melts to form iron alloy liquid; the melting temperature is 1580-1600°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 iron-antimony 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 alloy material fibers. The linear speed of the runner flange is 19-21m / s. Turn on the water-cooling system of the runner before the runner starts running, and the temperature of the water entering th...

Embodiment 2

[0030]Magnesium alloy substrate by weight percentage: Al is 4%, Si is 3%, Pb is 0.05%, Mn is 0.05%, Fe is 0.05%, Sb is 0.05%, Cu is 0.05%, Gd is 0.09%, Sm is 0.09%, and the rest is Mg for batching;

[0031] The content of fine-grained iron-antimony fiber by weight percentage: Sb is 10%, Cu is 0.09%, Sm is 0.09%, Gd is 0.2%, and the rest is Fe for batching; the volume of fine-grained iron-antimony fiber and pumice when preparing the prefabricated body The ratio is 1:1, pumice is a silicate containing aluminum, potassium, and sodium, and its specific composition: SiO2 accounts for 65%-75%, Al2O3 accounts for 9%-12%, and the rest is CaO, MgO and Fe2O3.

[0032] The added amount of the silica sol is 1-2% of the total weight of the fine-grained iron-antimony fiber and the pumice mixture, and the fine-grained iron-antimony fiber and the pumice are controlled to account for 55% of the volume of the magnesium alloy matrix. Its preparation process is with embodiment one.

Embodiment 3

[0034] Magnesium alloy substrate by weight percentage: Al is 3%, Si is 2%, Pb is 0.03%, Mn is 0.045%, Fe is 0.04%, Sb is 0.03%, Cu is 0.03%, Gd is 0.009%, Sm is 0.009%, the rest is Mg for batching;

[0035] Fine-grained iron-antimony fiber by weight percentage: Sb is 7%, Cu is 0.009%, Sm is 0.009%, Gd is 0.1%, and the rest is Fe for batching;

[0036] When preparing the preform, the volume ratio of fine-grained iron-antimony fiber and pumice is 1:1, and the addition of silica sol is 1-2% of the total weight of the fine-grained iron-antimony fiber and pumice mixture to control the fine-grained iron-antimony fiber and pumice. Accounting for 45% of the volume of the magnesium alloy matrix.

[0037] Its preparation process is with embodiment one.

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Abstract

The invention provides a finely crystalline iron-stibium fiber and pumice magnesium alloy composite material and a preparation method thereof. The composite material has high strength, and excellent damping performance. The method has the advantages of simple process, low production cost and suitability for industrial production. The composite material has the magnesium alloy serving as a matrix, finely crystalline iron-stibium fibers and pumice microparticles are distributed on the matrix, the crystalline grains of the iron-stibium fibers are 1 to 10 mu m, and the fibers and the pumice account for 45 to 55 volume percent of the composite material, wherein the weight ratio of the fibers to the pumice is 1:1.

Description

1. Technical field [0001] The invention belongs to the field of metal materials, and relates to a high-damping fine-grained iron-antimony 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] Application No. 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, including the following steps: (1) removing the glue layer on the surface of carbon or graphite fibers; (2) chemical vapor deposition heat Debonding coating: use alkane gas with high carbon content as the pyrolysis gas, and 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 coat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C32/00C22C49/04C22C49/14C22C47/08B22D11/06C22C1/10C22C111/00
Inventor 王玲赵浩峰缪文浩
Owner 淮安市清河区科技转化服务中心
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