CN101863670A - Preformed member sintering process for strengthening interface structure of aluminum-base composite material by changing bismuth oxide coating borate whisker - Google Patents
Preformed member sintering process for strengthening interface structure of aluminum-base composite material by changing bismuth oxide coating borate whisker Download PDFInfo
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- CN101863670A CN101863670A CN 201010211745 CN201010211745A CN101863670A CN 101863670 A CN101863670 A CN 101863670A CN 201010211745 CN201010211745 CN 201010211745 CN 201010211745 A CN201010211745 A CN 201010211745A CN 101863670 A CN101863670 A CN 101863670A
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- bismuth oxide
- preformed member
- borate whisker
- oxide coating
- sintering process
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Abstract
The invention provides a preformed member sintering process for strengthening an interface structure of an aluminum-base composite material by changing bismuth oxide coating borate whisker, which relates to a preformed member sintering process. The preformed member sintering process comprises the following steps of: obtaining different reaction products by using chemical reaction of the whisker and the bismuth oxide, wherein the composite material has different interface structures and interface states in order to obtain the composite material with different performances. In the invention, a preformed member is sintered in the conditions of 450-670 DEG C, 680-810 DEG C or 820-1000 DEG C. Because a bismuth oxide coating reacts with the borate whisker under a certain condition, Bi2O3 and Al4Bi2O9 (or Bi18Mg8O60) coatings can be obtained, and the proportion of Bi2O3 to Al4Bi2O9 (or Bi18Mg8O60) is regulated by controlling the sintering time, the composite material is prepared by using the preformed member processed by the invention by an extruding and casting method, and the interface damp of the composite material with an Al4Bi2O9 phase of the obtained interface reaches a high-damping level (a damping value Q-1 is greater than 0.1).
Description
Technical field
The present invention relates to a kind of preformed member sintering process.
Background technology
Aluminum matrix composite has high specific strength, high specific stiffness, wear-resistant, high temperature resistant, the coefficient of expansion that thermal conductivity is good, low, high dimensional stability and advantage such as good fatigue property and fracture property.For matrix material, the interface is that matrix material is distinctive and be extremely important integral part, because interfacial state not only influences the mechanical property of matrix material consumingly but also produces remarkable effect to its physicals is same.The borate whisker reinforced aluminum matrix composites becomes competitive type material in the aluminum matrix composite because of its excellent performance and cheap price.At present, the technology of preparing of borate whisker reinforced aluminum matrix composites mainly adopts squeeze casting method.What surface reaction takes place be the borate whisker reinforced aluminum matrix composites between whisker and the matrix in the extrusion casting process wants one of characteristics most.Therefore interface wet ability difference and the serious surface reaction of generation are the key factors that influences the development of borate whisker reinforced aluminum matrix composites, and the mechanical property of remarkably influenced matrix material, become " bottleneck " of its production of restriction and application.Because the interface of matrix material has the height designability, the various countries scientific worker has invented miscellaneous by strengthening the different coating of surface coating through trial for many years, improve the metal-base composites interface structure, to reach the purpose of improving composite property.The bismuth oxide coating borate whisker reinforced aluminum matrix composites is exactly wherein a kind of.The preparation of high quality matrix material is the basis of research material performance, is the guarantee that realizes material produce and application.One of gordian technique in the extrusion casting method is exactly the preparation of prefabricated component.If the prefabricated component preparation is good, the control of parameters such as extrusion temperature, squeeze pressure is proper, just can obtain the matrix material of whisker random orientation, uniform distribution and excellent property.
Summary of the invention
The present invention utilizes the chemical reaction between whisker and the bismuth oxide to obtain different reaction product, make matrix material have different interface structures and interfacial state, to obtain to have the matrix material of different performance, provide a kind of preformed member sintering process that changes bismuth oxide coating borate whisker reinforced aluminum matrix composites interface structure.
It is as follows that the present invention changes the preformed member sintering process of bismuth oxide coating borate whisker reinforced aluminum matrix composites interface structure: with prefabricated component sintering under 450 ℃ ~ 670 ℃ condition, soaking time is 0.5 ~ 8h; Perhaps with prefabricated component sintering under 680 ~ 810 ℃ condition, soaking time is 0.5 ~ 10h; Perhaps with prefabricated component sintering under 820 ~ 1000 ℃ condition, soaking time is 0.5 ~ 10h.
The bismuth oxide coating borate whisker reinforced aluminum matrix composites of preparation prefabricated component is a Bismuth Trioxide coating ceramic phase reinforced aluminum matrix composites among the present invention, wherein the shared volume fraction of ceramic phase enhancing body (borate whisker) is 10 ~ 75%, and the mass ratio that bismuth oxide and ceramic phase strengthen body (borate whisker) is 1:10 ~ 1:1.
React because bismuth oxide strengthens body (borate whisker) with ceramic phase under certain condition, can obtain Bi
2O
3With Al
4Bi
2O
9(or Bi
18Mg
8O
60) coating, adjust Bi by the control sintering time
2O
3With Al
4Bi
2O
9(or Bi
18Mg
8O
60) ratio, the method utilization by extrusion casting prepares matrix material through the prefabricated component that the present invention handles then, can obtain the interface by proper temperature and soaking time and only contain Al
4Bi
2O
9The matrix material of phase, the interface damping of this matrix material reaches high damping level (damping value
Q -1＞0.1).
Description of drawings
Fig. 1 is the surface topography map of embodiment three prefabricated component behind oversintering; Fig. 2 is the surface topography map of prefabricated component behind the embodiment the six channels oversintering; Fig. 3 is the surface topography map of embodiment nine prefabricated component behind oversintering.
Embodiment
Technical solution of the present invention is not limited to following cited embodiment, also comprises the arbitrary combination between each embodiment.
Embodiment one: the preformed member sintering process that changes bismuth oxide coating borate whisker reinforced aluminum matrix composites interface structure in the present embodiment is as follows: with prefabricated component sintering under 450 ℃ ~ 670 ℃ condition, soaking time is 0.5 ~ 8h.
The bismuth oxide coating borate whisker reinforced aluminum matrix composites of preparation prefabricated component is a Bismuth Trioxide coating ceramic phase reinforced aluminum matrix composites in the present embodiment, wherein the shared volume fraction of ceramic phase enhancing body (whisker) is 10 ~ 75%, and the mass ratio that bismuth oxide and ceramic phase strengthen body (whisker) is 1:10 ~ 1:1.
Through the coating at the interface in the bismuth oxide coating borate whisker reinforced aluminum matrix composites behind the present embodiment sintering is single Bi
2O
3
Embodiment two: what present embodiment and embodiment one were different is that soaking time is 1 ~ 7h with prefabricated component sintering under 500 ℃ ~ 600 ℃ condition.Other is identical with embodiment one.
Embodiment three: what present embodiment and embodiment one were different is that soaking time is 5h with prefabricated component sintering under 550 ℃ condition.Other is identical with embodiment one.
The bismuth oxide coating borate whisker reinforced aluminum matrix composites of preparation prefabricated component is a Bismuth Trioxide coating ceramic phase reinforced aluminum matrix composites in the present embodiment, wherein the shared volume fraction of ceramic phase enhancing body (borate whisker) is 10 ~ 75%, and the mass ratio that bismuth oxide and ceramic phase strengthen body (borate whisker) is 1:10 ~ 1:1.
Strengthen between body and the Bismuth Trioxide coating through ceramic phase behind the present embodiment sintering chemical reaction do not take place, matrix material only contain bismuth and aluminum oxide two-phase at the interface, prefabricated component has the good high-temperature formability.
Embodiment four: the preformed member sintering process that changes bismuth oxide coating borate whisker reinforced aluminum matrix composites interface structure in the present embodiment is as follows: with prefabricated component sintering under 680 ~ 810 ℃ condition, soaking time is 0.5 ~ 10h.
The bismuth oxide coating borate whisker reinforced aluminum matrix composites of preparation prefabricated component is a Bismuth Trioxide coating ceramic phase reinforced aluminum matrix composites in the present embodiment, wherein the shared volume fraction of ceramic phase enhancing body (whisker) is 10 ~ 75%, and the mass ratio that Bismuth Trioxide and ceramic phase strengthen body (whisker) is 1:10 ~ 1:1.
Through behind the present embodiment sintering in the coating at the interface of bismuth oxide coating borate whisker reinforced aluminum matrix composites by Bi
2O
3With Al
4Bi
2O
9(or Bi
18Mg
8O
60) composition, wherein Al
4Bi
2O
9(or Bi
18Mg
8O
60) content be 10 ~ 50%.
Embodiment five: what present embodiment and embodiment four were different is that soaking time is 1 ~ 8h with prefabricated component sintering under 700 ~ 800 ℃ condition.Other is identical with embodiment four.
Embodiment six: what present embodiment and embodiment four were different is that soaking time is 5h with prefabricated component sintering under 750 ℃ condition.Other is identical with embodiment four.
The bismuth oxide coating borate whisker reinforced aluminum matrix composites of preparation prefabricated component is a Bismuth Trioxide coating ceramic phase reinforced aluminum matrix composites in the present embodiment, wherein the shared volume fraction of ceramic phase enhancing body (whisker) is 10 ~ 75%, and the mass ratio that bismuth oxide and ceramic phase strengthen body (whisker) is 1:10 ~ 1:1.
Through behind the present embodiment sintering in the coating at the interface of bismuth oxide coating borate whisker reinforced aluminum matrix composites Al
4Bi
2O
9(or Bi
18Mg
8O
60) content about 30%.
Through between ceramic phase enhancing body (whisker) and the Bismuth Trioxide coating chemical reaction taking place behind the present embodiment sintering, generate Al
4Bi
2O
9(or Bi
18Mg
8O
60) phase, by control sintering time may command Al
4Bi
2O
9(or Bi
18Mg
8O
60) content in coating, utilize this kind prefabricated component to prepare matrix material by the method for extrusion casting, not only contain bismuth and aluminum oxide at the interface, also contain Al
4Bi
2O
9(or Bi
18Mg
8O
60), matrix material has good mechanical performance and room temperature damping capacity, and its damping capacity reaches middle damping level (damping value
Q -1＞0.01).
Embodiment seven: the preformed member sintering process that changes bismuth oxide coating borate whisker reinforced aluminum matrix composites interface structure in the present embodiment is as follows: with prefabricated component sintering under 820 ~ 1000 ℃ condition, soaking time is 0.5 ~ 10h.
The bismuth oxide coating borate whisker reinforced aluminum matrix composites of preparation prefabricated component is a Bismuth Trioxide coating ceramic phase reinforced aluminum matrix composites in the present embodiment, wherein the shared volume fraction of ceramic phase enhancing body (borate whisker) is 10 ~ 75%, and the mass ratio that bismuth oxide and ceramic phase strengthen body (borate whisker) is 1:10 ~ 1:1.
Through behind the present embodiment sintering in the coating at the interface of bismuth oxide coating borate whisker reinforced aluminum matrix composites by Bi
2O
3With Al
4Bi
2O
9(or Bi
18Mg
8O
60) composition, wherein Al
4Bi
2O
9(or Bi
18Mg
8O
60) content 50 ~ 100%.
Embodiment eight: what present embodiment and embodiment seven were different is that soaking time is 2 ~ 8h with prefabricated component sintering under 850 ~ 950 ℃ condition.Other is identical with embodiment seven.
Embodiment nine: what present embodiment and embodiment seven were different is that soaking time is 5h with prefabricated component sintering under 900 ℃ condition.Other is identical with embodiment seven.
Through behind the present embodiment sintering in the coating at the interface of bismuth oxide coating borate whisker reinforced aluminum matrix composites Al
4Bi
2O
9(or Bi
18Mg
8O
60) content about 80%.
Behind the present embodiment sintering, Al in the coating
4Bi
2O
9(or Bi
18Mg
8O
60) ratio of phase obviously increases, and utilizes this kind prefabricated component to prepare matrix material by the method for extrusion casting, not only contains bismuth and aluminum oxide at the interface, also contains Al
4Bi
2O
9(or Bi
18Mg
8O
60), matrix material has the good interface damping capacity and obviously improves.Only contain Al at the interface
4Bi
2O
9The composite material interface damping of phase reaches high damping level (damping value
Q -1＞0.1).
Claims (9)
1. change the preformed member sintering process of bismuth oxide coating borate whisker reinforced aluminum matrix composites interface structure, the preformed member sintering process that it is characterized in that changing bismuth oxide coating borate whisker reinforced aluminum matrix composites interface structure is as follows: with prefabricated component sintering under 450 ℃～670 ℃ condition, soaking time is 0.5～8h.
2. the preformed member sintering process of change bismuth oxide coating borate whisker reinforced aluminum matrix composites interface structure according to claim 1 is characterized in that soaking time is 1～7h with prefabricated component sintering under 500 ℃～600 ℃ condition.
3. the preformed member sintering process of change bismuth oxide coating borate whisker reinforced aluminum matrix composites interface structure according to claim 1 is characterized in that soaking time is 5h with prefabricated component sintering under 550 ℃ condition.
4. change the preformed member sintering process of bismuth oxide coating borate whisker reinforced aluminum matrix composites interface structure, the preformed member sintering process that it is characterized in that changing bismuth oxide coating borate whisker reinforced aluminum matrix composites interface structure is as follows: with prefabricated component sintering under 680～810 ℃ condition, soaking time is 0.5～10h.
5. the preformed member sintering process of change bismuth oxide coating borate whisker reinforced aluminum matrix composites interface structure according to claim 4 is characterized in that soaking time is 1～8h with prefabricated component sintering under 700～800 ℃ condition.
6. the preformed member sintering process of change bismuth oxide coating borate whisker reinforced aluminum matrix composites interface structure according to claim 4 is characterized in that soaking time is 5h with prefabricated component sintering under 750 ℃ condition.
7. change the preformed member sintering process of bismuth oxide coating borate whisker reinforced aluminum matrix composites interface structure, the preformed member sintering process that it is characterized in that changing bismuth oxide coating borate whisker reinforced aluminum matrix composites interface structure is as follows: with prefabricated component sintering under 820～1000 ℃ condition, soaking time is 0.5～10h.
8. the preformed member sintering process of change bismuth oxide coating borate whisker reinforced aluminum matrix composites interface structure according to claim 4 is characterized in that soaking time is 2～8h with prefabricated component sintering under 850～950 ℃ condition.
9. the preformed member sintering process of change bismuth oxide coating borate whisker reinforced aluminum matrix composites interface structure according to claim 4 is characterized in that soaking time is 5h with prefabricated component sintering under 900 ℃ condition.
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|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102912264A (en) * | 2012-10-26 | 2013-02-06 | 哈尔滨理工大学 | Preparation method for coating ceramic phase reinforcement/aluminum-based composite material through nanometer bismuth oxide |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1414131A (en) * | 2002-09-05 | 2003-04-30 | 费维栋 | Magnesium borate crystal whisker reinforced aluminium base composite material and preparation technology |
-
2010
- 2010-06-29 CN CN 201010211745 patent/CN101863670A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1414131A (en) * | 2002-09-05 | 2003-04-30 | 费维栋 | Magnesium borate crystal whisker reinforced aluminium base composite material and preparation technology |
Non-Patent Citations (2)
| Title |
|---|
| 《中国博士学位论文全文数据库》 20091231 李志军 Bi_2O_3涂覆Al_（18）B_4O_（33）晶须增强铝复合材料的界面反应及高温变形行为 45-74 1-9 , 2 * |
| 《复合材料--基础、创新、高效：第十四届全国复合材料学术会议论文集（上）》 20061231 李志军; 费维栋; 王黎东 晶须表面的Bi_2O_3涂层含量对硼酸铝晶须增强铝基复合材料力学性能的影响 全文 1-9 , 2 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102912264A (en) * | 2012-10-26 | 2013-02-06 | 哈尔滨理工大学 | Preparation method for coating ceramic phase reinforcement/aluminum-based composite material through nanometer bismuth oxide |
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Application publication date: 20101020 |