CN1257296C - TiB2/Ai high--damp composite material and preparing method thereof - Google Patents
TiB2/Ai high--damp composite material and preparing method thereof Download PDFInfo
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- CN1257296C CN1257296C CN 200310122739 CN200310122739A CN1257296C CN 1257296 C CN1257296 C CN 1257296C CN 200310122739 CN200310122739 CN 200310122739 CN 200310122739 A CN200310122739 A CN 200310122739A CN 1257296 C CN1257296 C CN 1257296C
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- high damping
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- damping composite
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Abstract
The present invention relates to a process for preparing TiB2/Ai composite material with high damping, which belongs to the field of material. The composite material of the present invention comprises the following components: 13 wt% of Si4, 8 wt% of Cu O, 1.3 wt% of Mg O, 0.9 wt% of Mn O, 0.1 to 20 wt% of TiB2 and Al as the rest. The present invention is characterized in that the in-situ self-generating TiB2/Ai composite material with high damping is prepared by a salt reaction method. The process comprises the following steps: after an added aluminium ingot is fully melted, the melt is covered by a covering agent; after the temperature of the aluminium melt is preserved, the baked mixed salt of K2TiF6 and KBF4 is added to be stirred; a reaction product of the mixed salt is scooped after the reaction is finished, one, or two or three kinds of Si, Cu, Mg and Mn are added to regulate chemical components, the reaction product is cast in an ingot mold after being stilled, the in-situ self-generating TiB2/Al composite material with high damping is obtained. The in-situ self-generating TiB2 particle of the present invention has the advantages of clean surface, good combination with an aluminium-based interface and achievement of the requirement of high-damping material at normal temperature. The process lays a strong foundation for composite material with high damping.
Description
Technical field
The present invention relates to a kind of high damping cast aluminum base composite material and preparation technology thereof, particularly a kind of TiB
2/ Al high damping composite material and preparation technology thereof.Belong to the material field.
Background technology
Metal-base composites becomes ideal material in the fields such as Aeronautics and Astronautics, automobile, electronic industry day by day as the new structural material with excellent mechanical performances and physicals, and very good prospects for application is arranged.Some dynamic structure needs strict its vibration of control and noise, and this just has higher requirement to the damping capacity of material.Traditional aluminum alloy materials belongs to low resistance material ranks, its normal temperature damping capacity Q
-1＜10 * 10
-3, can not satisfy the requirement of the development of high-tech sector to the material high damping properties, high-damping metal base composite material is the research field of very paying attention in the world.
Find by literature search, the Chinese patent name is called: a kind of process of producing zinc-aluminium alloy, and number of patent application is: 98124025.9, this patent has been introduced: by alloying and thermal treatment process, improve aluminium alloy material mechanical property and wear resisting property, improved the alloy material damping capacity.Wearing piece is made in the fields such as household electrical appliances, universal machine that are mainly used in and shock absorber part uses.Though the high damping aluminium-zinc cast alloy by method for preparing has plurality of advantages and since drawbacks limit such as its proportion is bigger than normal aluminium zinc in the application that requires fields such as high damping, low-density aerospace.
Summary of the invention
Purpose of the present invention provides a kind of TiB at the above-mentioned deficiency of prior art
2/ Al high damping composite material and preparation technology thereof make it obtain a kind of in-situ authigenic and contain TiB
2Particulate low density, high-damp aluminum based composite material satisfy the application in fields such as space flight.
The present invention is achieved by the following technical solutions, reaction salt method high damping cast aluminum base composite material of the present invention, and its composition weight percent consists of: Si 4～13%, and Cu 0～8%, and Mg 0.2～1.3%, and Mn 0～0.9%, TiB
20.1～20%, all the other are Al.
TiB of the present invention
2The preparation technology of/Al high damping composite material utilizes K
2TiF
6, KBF
4Mixing salt prepared in reaction in-situ self-generated TiB
2/ Al high damping composite material may further comprise the steps:
(1) covers melt with insulating covering agent after the adding aluminium ingot all melts;
(2) molten aluminium insulation back adds the K of oven dry
2TiF
6, KBF
4Mixed salt also stirs;
(3) reaction is scooped out mixed salt reaction product after finishing, and adds Si and Cu, Mg, Mn a kind of or two kinds or three kinds of adjustment chemical ingredientss wherein, pours into ingot mould after leaving standstill, and promptly obtains in-situ self-generated TiB
2/ Al high damping composite material.
In the step (1), the aluminium ingot temperature of fusion is between 680 ℃～750 ℃.
In the step (2), mixed salt adds temperature between 680 ℃～900 ℃, and mixed salt was 150 ℃～250 ℃ insulation oven dry 2～5 hours.Stirring velocity is 200～400rpm, and churning time is 10～30min, 680 ℃～900 ℃ of whipping temps.
In the step (3), the melt dwell temperature is 680 ℃～780 ℃, and time of repose is 10～30min.
Compared with prior art, the high damping cast aluminum base composite material of technology utilization reaction salt method preparation of the present invention, in-situ self-generated TiB
2The particle surface cleaning combines well with the aluminum substrate interface, and damping reaches the requirement of high damping material under the normal temperature, has established solid basis for producing high damping composite material.
Embodiment
Provide following examples in conjunction with content of the present invention, the present invention done further understanding:
Embodiment 1
The preparation matrix becomes Si13%, and Cu 1%, and Mg 1.3%, and all the other are the high damping composite material of Al, wherein TiB
2Content is 20%, and process is as follows:
Aluminium-silicon ingots fusing back covers with insulating covering agent, and melt temperature reaches 900 ℃, adds through 2 hours K of 250 ℃ of insulation oven dry
2TiF
6, KBF
4Mixed salt stirs 10min with whipping appts with the commentaries on classics of the 400rpm speed of stirring, and whipping temp is 900 ℃.Scoop out mixed salt reaction product and add Si, Cu after Mg adjusts chemical ingredients, pours ingot mould through 780 ℃ into after leaving standstill 10min and promptly gets TiB
2/ Al high damping composite material.The gained matrix material is cut into the damping sample of 50mm * 5mm * 1mm, record the damping value Q of prepared high damping composite material by DMTA
-1=7～30 * 10
-3
Embodiment 2
Preparation matrix composition is Si8.5%, and Mg 0.3%, and Mn 0.5%, and all the other are the high damping composite material of Al, wherein TiB
2Content is 0.1%, and process is as follows:
Aluminium-silicon ingots fusing back insulating covering agent covers, and melt temperature reaches 790 ℃, adds through 3.5 hours K of 200 ℃ of insulation oven dry
2TiF
6, KBF
4Mixed salt stirs 20min with whipping appts with the commentaries on classics of the 300rpm speed of stirring, and whipping temp is 790 ℃.Scoop out mixed salt reaction product and add Si, Mg after Al-Mn adjusts chemical ingredients, pours ingot mould through 730 ℃ into after leaving standstill 20min and promptly gets TiB
2/ Al high damping composite material.The gained matrix material is cut into the damping sample of 50mm * 5mm * 1mm, record the damping value Q of prepared high damping composite material by DMTA
-1=8～34 * 10
-3
Embodiment 3
Preparation matrix composition is Si 4%, Mg0.2%, and Cu 8%, and all the other are the high damping composite material of Al, wherein TiB
2Content is 10%, and process is as follows:
Aluminium-silicon ingots fusing back adds insulating covering agent and covers, and melt temperature reaches 680 ℃, adds through 5 hours K of 150 ℃ of insulation oven dry
2TiF
6, KBF
4Mixed salt stirs 30min with whipping appts with the commentaries on classics of the 200rpm speed of stirring, and whipping temp is 680 ℃.Scoop out mixed salt reaction product and add Si, Mg after Cu adjusts chemical ingredients, pours ingot mould through 680 ℃ into after leaving standstill 30min and promptly gets TiB
2/ Al high damping composite material.The gained matrix material is cut into the damping sample of 50mm * 5mm * 1mm, record the damping value Q of prepared high damping composite material by DMTA
-1=7～32 * 10
-3
Embodiment 4
Preparation matrix composition is Si 11%, Mg0.6%, and Cu 2%, and all the other are the high damping composite material of Al, wherein TiB for Mn 0.9%
2Content is 15%, and process is as follows:
Aluminium-silicon ingots fusing back adds insulating covering agent and covers, and melt temperature reaches 750 ℃, adds through 3 hours K of 200 ℃ of insulation oven dry
2TiF
6, KBF
4Mixed salt stirs 15min with whipping appts with the commentaries on classics of the 350rpm speed of stirring, and whipping temp is 750 ℃.Scoop out mixed salt reaction product and add Si, Mg, Cu after Al-Mn adjusts chemical ingredients, pours ingot mould through 710 ℃ into after leaving standstill 25min and promptly gets TiB
2/ Al high damping composite material.The gained matrix material is cut into the damping sample of 50mm * 5mm * 1mm, record the damping value Q of prepared high damping composite material by DMTA
-1=8～36 * 10
-3
Embodiment 5
Preparation matrix composition is Si 7%, and Cu 4%, and all the other are the high damping composite material of Al, wherein TiB
2Content is 5%, and process is as follows:
Aluminium-silicon ingots fusing back adds insulating covering agent and covers, and melt temperature reaches 800 ℃, adds through 5 hours K of 150 ℃ of insulation oven dry
2TiF
6, KBF
4Mixed salt stirs 30min with whipping appts with the commentaries on classics of the 200rpm speed of stirring, and whipping temp is 800 ℃.Scoop out mixed salt reaction product and add Si, after Cu adjusts chemical ingredients, pour ingot mould through 730 ℃ into after leaving standstill 20min and promptly get TiB
2/ Al high damping composite material.The gained matrix material is cut into the damping sample of 50mm * 5mm * 1mm, record the damping value Q of prepared high damping composite material by DMTA
-1=7～38 * 10
-3
Embodiment 6
Preparation matrix composition is Si 7%, and Mg 0.5%, and all the other are the high damping composite material of Al, wherein TiB
2Content is 6%, and process is as follows:
Aluminium-silicon ingots fusing back adds insulating covering agent and covers, and melt temperature reaches 780 ℃, adds through 3 hours K of 200 ℃ of insulation oven dry
2TiF
6, KBF
4Mixed salt stirs 20min with whipping appts with the commentaries on classics of the 300rpm speed of stirring, and whipping temp is 780 ℃.Scoop out mixed salt reaction product and add Si, after Mg adjusts chemical ingredients, pour ingot mould through 720 ℃ into after leaving standstill 20min and promptly get TiB
2/ Al high damping composite material.The gained matrix material is cut into the damping sample of 50mm * 5mm * 1mm, record the damping value Q of prepared high damping composite material by DMTA
-1=8～40 * 10
-3
Claims (5)
1, a kind of TiB
2/ Al high damping composite material is characterized in that, its composition weight percent consists of, and Si 4～13%, and Cu 0～8%, and Mg 0.2～1.3%, and Mn 0～0.9%, TiB
20.1～20%, all the other are Al.
2, a kind of TiB according to claim 1
2The preparation technology of/Al high damping composite material is characterized in that, utilizes reaction salt method to prepare in-situ self-generated TiB
2/ Al high damping composite material may further comprise the steps:
(1) covers melt with insulating covering agent after the adding aluminium ingot all melts;
(2) molten aluminium insulation back adds the K of oven dry
2TiF
6, KBF
4Mixed salt also stirs;
(3) reaction is scooped out mixed salt reaction product after finishing, and adds Si and Cu, Mg, Mn a kind of or two kinds or three kinds of adjustment chemical ingredientss wherein, pours into ingot mould after leaving standstill, and promptly obtains in-situ self-generated TiB
2/ Al high damping composite material.
3, TiB according to claim 2
2The preparation technology of/Al high damping composite material is characterized in that, in the step (1), the aluminium ingot temperature of fusion is between 680 ℃～750 ℃.
5, TiB according to claim 2
2The preparation technology of/Al high damping composite material is characterized in that, in the step (2), mixed salt adds temperature between 780 ℃～900 ℃, and mixed salt was 150 ℃～250 ℃ insulation oven dry 2～5 hours.
5, TiB according to claim 2
2The preparation technology of/Al high damping composite material is characterized in that, in the step (3), the melt dwell temperature is 680 ℃～780 ℃, and time of repose is 10～30min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310122739 CN1257296C (en) | 2003-12-19 | 2003-12-19 | TiB2/Ai high--damp composite material and preparing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310122739 CN1257296C (en) | 2003-12-19 | 2003-12-19 | TiB2/Ai high--damp composite material and preparing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1552930A CN1552930A (en) | 2004-12-08 |
| CN1257296C true CN1257296C (en) | 2006-05-24 |
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|---|---|---|---|
| CN 200310122739 Expired - Fee Related CN1257296C (en) | 2003-12-19 | 2003-12-19 | TiB2/Ai high--damp composite material and preparing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104789810A (en) * | 2015-03-04 | 2015-07-22 | 南昌大学 | In-situ Al3Ti particle reinforced Al-Si-Cu composite material semi-solid state slurry preparation method |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100342047C (en) * | 2005-07-28 | 2007-10-10 | 上海交通大学 | In situ mixed granula reinforced aluminium base composite material |
| CN1327020C (en) * | 2005-07-28 | 2007-07-18 | 上海交通大学 | Method for preparing aluminium based composite material enhanced by miscellaneous granules in situ |
| CN1312305C (en) * | 2005-09-22 | 2007-04-25 | 上海交通大学 | In-situ grain reinforced high temperature aluminium base composite material |
| CN100569975C (en) * | 2008-02-27 | 2009-12-16 | 中国科学院长春应用化学研究所 | Extrusion deformation damping aluminum-magnesium alloy and preparation method |
| CN101906548B (en) * | 2010-07-09 | 2012-06-06 | 哈尔滨工业大学 | Preparation method of TiB2 particle-reinforced TiAl-based composite material |
| CN102660757B (en) * | 2012-05-23 | 2015-01-21 | 深圳市新星轻合金材料股份有限公司 | Preparation technology for inert anode material or inert cathode coating material for aluminum electrolysis |
| CN104138921B (en) * | 2014-06-16 | 2016-03-02 | 西安西工大超晶科技发展有限责任公司 | A kind of in-situ authigenic aluminum matrix composite bar preparation method |
| CN110129641B (en) * | 2019-05-13 | 2021-05-25 | 贵州航天风华精密设备有限公司 | High-performance in-situ TiB2Particle reinforced aluminum-based composite material and preparation method thereof |
| CN113025851A (en) * | 2021-03-02 | 2021-06-25 | 安徽省金兰金盈铝业有限公司 | High-strength high-damping wrought aluminum and preparation method thereof |
-
2003
- 2003-12-19 CN CN 200310122739 patent/CN1257296C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104789810A (en) * | 2015-03-04 | 2015-07-22 | 南昌大学 | In-situ Al3Ti particle reinforced Al-Si-Cu composite material semi-solid state slurry preparation method |
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|---|---|
| CN1552930A (en) | 2004-12-08 |
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