CN1316052C - Method of improving damping performance of fiber reinforced magnesium base composite material - Google Patents
Method of improving damping performance of fiber reinforced magnesium base composite material Download PDFInfo
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- CN1316052C CN1316052C CNB2005100273211A CN200510027321A CN1316052C CN 1316052 C CN1316052 C CN 1316052C CN B2005100273211 A CNB2005100273211 A CN B2005100273211A CN 200510027321 A CN200510027321 A CN 200510027321A CN 1316052 C CN1316052 C CN 1316052C
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- magnesium base
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Abstract
The present invention relates to a method for enhancing the damping performance of a fiber reinforcement magnesium base composite material, which belongs to the technical field of a composite material. The method comprises the following steps: (1) an adhesive layer at the surface of carbon or a graphite fiber is removed; (2) a pyrolytic carbon coating is deposited by a chemical vapour phase, alkane gas with a high carbon content is adopted as pyrolytic gas, the deposition of generated carbon at the surface of the carbon or the graphite fiber after degumming is decomposed at a high temperature to make a simple substance pyrolytic carbon coating, and the thickness of the simple substance pyrolytic carbon coating which is obtained is from 0.1 to hundreds micrometers; (3) after the carbon or the graphite fiber whose surface has the simple substance pyrolytic carbon coating is well prepared, the carbon or the graphite fiber and the liquid of pure magnesium or magnesium alloy are soaked and compounded by pressure to prepare a magnesium base composite material. The present invention uses the carbon or the graphite fiber as a reinforcement body, and uses the pure magnesium or the magnesium alloy as a basal body. A special interface layer is obtained by the chemical vapour phase deposition of the pyrolytic carbon at the surface of the carbon or the graphite fiber. Compared with an uncoated magnesium base composite material, the damping performance of the magnesium base composite material is markedly enhanced, and the damping performance can reach the high damping range of 0.01.
Description
Technical field
What the present invention relates to is a kind of method of technical field of composite materials, specifically, is a kind of method that improves damping performance of fiber reinforced magnesium base composite material.
Background technology
The damping capacity of material has play a part important in the vibration of control texture and noise, thereby has also prolonged cyclic loading or impacted the service life of material down.In application such as space flight, the high damping properties of material itself not only helps to keep the high stability of structure, and can reduce the additional damping design, improves the useful load of spacecraft.Therefore, the damping capacity of raising carbon or graphite fibre enhancing magnesium base composite material is significant.Because the interface of magnesium base composite material is remarkable to the influence of its mechanical property and damping capacity, the modification design of interfacial layer plays a key role for the final performance of magnesium base composite material.But the method for modifying that existing research does not relate to by interfacial layer improves the magnesium base composite material damping capacity.
Through the literature search of prior art is found, (1997, people such as C.Mayencourt publish thesis on 163:357) " high damping composite material: Mg at " Phys.Status.Solidi.A " (solid state physics A)
2The research of Si/Mg ", this article proposes to prepare fibre reinforced composites Mg by directional solidification processes
2Si/Mg has the suitable tensile strength of industrial cast magnesium alloys AZ63 and damping capacity has improved 10-100 doubly, but this directional solidification processes complexity is not suitable for suitability for industrialized production, does not relate to the content that fiber surface modification improves the magnesium base composite material damping capacity.Opening the peasant waits in " material engineering " (1997, No.8:19-21) " the damping behavior research of Gr/Mg matrix material " publishes thesis on, this article has been studied the damping capacity with graphite fibre enhanced magnesium base composite material, but does not relate to the method that improves damping capacity by fiber surface modification.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art part, a kind of method that improves damping performance of fiber reinforced magnesium base composite material is provided, making it serves as to strengthen body with carbon or graphite fibre, with pure magnesium or magnesium alloy is matrix, by obtaining special interfacial layer at carbon or graphite fibre surface chemistry vapour deposition (CVD) RESEARCH OF PYROCARBON, the damping capacity of magnesium base composite material is significantly improved.
The present invention is achieved by the following technical solutions, and concrete steps of the present invention are as follows:
(1) glue-line on removal carbon or graphite fibre surface.Remove glue and adopt under argon shield, 450-550 ℃ heating means, heat-up time was at 5-30 minute.
(2) chemical vapor deposition (CVD) pyrocarbon coating.The present invention adopts the high alkane gas of carbon content as pyrolysis gas, as: butane (C
4H
10), carbon or the graphite fibre surface deposition of carbon after coming unstuck that pyrolytic decomposition produces makes the simple substance pyrocarbon coating.CVD adopts 800-1200 ℃ of furnace temperature, is diluent gas with the argon gas, and depositing time determines by drawing speed, and the fast more depositing time of wire drawing is just short more, and depositing time is 5-120 minute, can obtain carbon coating thickness from 0.1 to the hundreds of micron.
(3) coated fibre and magnesium is compound.Preparing after there is the carbon or graphite fibre of pyrocarbon coating on the surface, carry out flooding compound preparation magnesium base composite material with the liquid pressure of pure magnesium or magnesium alloy.The compound technology routinely of liquid pressure dipping is carried out, and is high pressure gas with the argon gas, finishes in the pressure impregnation stove, the molten magnesium temperature is 700 ℃ during dipping, and 30 minutes compound dwell times are behind the furnace cooling, cut and take out, can make the second best in quality magnesium base composite material.
There is one deck glue on carbon or graphite fibre surface, will remove earlier before CVD handles, to guarantee the bonding of CVD settled layer.The present invention utilizes the thermal degradation of reactant gases, deposits degradation production on carbon after coming unstuck or the graphite fibre surface.Adopt the high alkane gas of carbon content as pyrolysis gas, as: butane (C
4H
10), the CVD process has following decomposition reaction: C
4H
10 4C (s)+5H
2, carbon or the graphite fibre surface deposition of carbon after coming unstuck that is produced by the butane pyrolytic decomposition makes the simple substance pyrocarbon coating.Its damping capacity of matrix material median surface bonding state remarkably influenced, weak interface combination can be passed through mechanisms consume vibrational energies such as interface microslip, thereby produces damping.The present invention is by showing carbon coating of chemical vapour deposition at continuous fibre, the existence of this coating has caused interface weak between fiber and magnesium matrix to combine, when vibration, can consume vibrational energy, thereby produce high damping capacity by the damper mechanisms such as microslip that occur in the carbon coating.
The present invention serves as to strengthen body with carbon or graphite fibre, with pure magnesium or magnesium alloy is matrix, by obtaining special interfacial layer at carbon or graphite fibre surface chemistry vapor deposition pyrolytic carbon, its damping capacity ratio of the magnesium base composite material of preparation is significantly improving of coating not, can reach 0.01 high damping scope.
Embodiment
Embodiment 1
With the T300 carbon fiber serves as to strengthen body, is matrix with the AZ91 magnesium alloy.Remove glue and adopt under argon shield, 450 ℃ were heated 5 minutes.CVD process using butane (C
4H
10) as pyrolysis gas, the CVD temperature is 800 ℃, depositing time is 5 minutes, can obtain coat-thickness 2 μ m.Adopt the liquid pressure impregnation technology to make magnesium base composite material, the damping capacity of matrix material reaches 0.01 high damping scope.
Embodiment 2
With the T300 carbon fiber serves as to strengthen body, is matrix with the AZ91 magnesium alloy.Remove glue and adopt under argon shield, 500 ℃ were heated 15 minutes.CVD process using butane (C
4H
10) as pyrolysis gas, the CVD temperature is 1000 ℃, depositing time is 60 minutes, can obtain coat-thickness 20-30 μ m.Adopt the liquid pressure impregnation technology to make magnesium base composite material, the damping capacity of matrix material reaches 0.015 high damping scope.
Embodiment 3
With the T300 carbon fiber serves as to strengthen body, is matrix with the AZ91 magnesium alloy.Remove glue and adopt under argon shield, 550 ℃ were heated 30 minutes.CVD process using butane (C
4H
10) as pyrolysis gas, the CVD temperature is 1200 ℃, depositing time is 120 minutes, can obtain coat-thickness 200 μ m.Adopt the liquid pressure impregnation technology to make magnesium base composite material, the damping capacity of matrix material reaches 0.02 high damping scope.
Claims (3)
1. a method that improves damping performance of fiber reinforced magnesium base composite material is characterized in that, may further comprise the steps:
(1) glue-line on removal carbon or graphite fibre surface: adopt argon shield, Heating temperature 450-550 ℃, 5-30 minute heat-up time;
(2) chemical vapor deposition pyrolytic carbon coating: adopt butane as pyrolysis gas, with the argon gas is diluent gas, adopt 800-1200 ℃ of furnace temperature, decompose carbon or the graphite fibre surface deposition of carbon after coming unstuck that produces and make the simple substance pyrocarbon coating, obtain carbon coating thickness from 0.1 to the hundreds of micron, depositing time is 5-120 minute;
(3) preparing after there is the carbon or graphite fibre of pyrocarbon coating on the surface, carry out flooding compound preparation magnesium base composite material with the liquid pressure of pure magnesium or magnesium alloy;
2. the method for raising damping performance of fiber reinforced magnesium base composite material according to claim 1 is characterized in that, described liquid pressure dipping is meant: be high pressure gas with the argon gas, finish in the pressure impregnation stove.
3. the method for raising damping performance of fiber reinforced magnesium base composite material according to claim 2 is characterized in that, described liquid pressure dipping is meant: the molten magnesium temperature is 700 ℃ during dipping, 30 minutes compound dwell times, behind the furnace cooling, cut and take out, make magnesium base composite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100273211A CN1316052C (en) | 2005-06-30 | 2005-06-30 | Method of improving damping performance of fiber reinforced magnesium base composite material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100273211A CN1316052C (en) | 2005-06-30 | 2005-06-30 | Method of improving damping performance of fiber reinforced magnesium base composite material |
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| Publication Number | Publication Date |
|---|---|
| CN1718834A CN1718834A (en) | 2006-01-11 |
| CN1316052C true CN1316052C (en) | 2007-05-16 |
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|---|---|---|---|
| CNB2005100273211A Expired - Fee Related CN1316052C (en) | 2005-06-30 | 2005-06-30 | Method of improving damping performance of fiber reinforced magnesium base composite material |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101391500B (en) * | 2007-09-21 | 2014-08-20 | 清华大学 | Magnesium based composite material and preparation method thereof |
| CN101705456B (en) * | 2009-11-16 | 2011-03-30 | 重庆大学 | Method for preparing short carbon fiber reinforced magnesium-base composite material with good damping characteristic |
| CN102051543B (en) * | 2011-01-14 | 2012-07-04 | 南京信息工程大学 | Wearable magnesium alloy material and preparation method thereof |
| CN102051535B (en) * | 2011-01-14 | 2012-08-22 | 南京信息工程大学 | Damping abrasion resistant magnesium alloy material and preparation method thereof |
| CN102051544B (en) * | 2011-01-14 | 2012-08-22 | 南京信息工程大学 | Magnesium alloy material with obdurability and preparation method thereof |
| CN102051539B (en) * | 2011-01-14 | 2012-08-22 | 南京信息工程大学 | Heat-resistant magnesium alloy material and preparation method thereof |
| CN102214488A (en) * | 2011-05-31 | 2011-10-12 | 航天材料及工艺研究所 | Boron-carbide-containing graphite absorber ball and preparation process thereof |
| DE102013225939A1 (en) * | 2013-12-13 | 2015-06-18 | Schunk Kohlenstofftechnik Gmbh | Method for producing a composite component |
| CN107296508B (en) * | 2016-04-15 | 2020-12-15 | 佛山市顺德区美的电热电器制造有限公司 | Graphite pot and manufacturing method thereof |
| CN106119740B (en) * | 2016-08-31 | 2017-12-05 | 东莞宜安科技股份有限公司 | Notebook computer magnesium alloy |
| CN107312984A (en) * | 2017-05-16 | 2017-11-03 | 苏州莱特复合材料有限公司 | A kind of modified carbon fiber enhancing magnesium-based composite material and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1428239A (en) * | 2001-12-25 | 2003-07-09 | 中国科学院金属研究所 | Preparation method of porous marmem damping composite material covered with metal |
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2005
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1428239A (en) * | 2001-12-25 | 2003-07-09 | 中国科学院金属研究所 | Preparation method of porous marmem damping composite material covered with metal |
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| CN1718834A (en) | 2006-01-11 |
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Owner name: YANGGUANG AUTOMOBILE ASSESSORY CO., LTD., NINGBO Free format text: FORMER OWNER: SHANGHAI JIAOTONG UNIV. Effective date: 20080926 |
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Effective date of registration: 20080926 Address after: Ningbo City, Zhejiang province Yinzhou District Lianfeng Road No. 889 Patentee after: Ningbo Sunlight Motor Parts Co., Ltd. Address before: No. 800, Dongchuan Road, Shanghai, Minhang District Patentee before: Shanghai Jiao Tong University |
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