CN101089217A - Middle volume fraction aluminium silicon-carbide metal-base composite and method for preparing product - Google Patents
Middle volume fraction aluminium silicon-carbide metal-base composite and method for preparing product Download PDFInfo
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- CN101089217A CN101089217A CN 200710018295 CN200710018295A CN101089217A CN 101089217 A CN101089217 A CN 101089217A CN 200710018295 CN200710018295 CN 200710018295 CN 200710018295 A CN200710018295 A CN 200710018295A CN 101089217 A CN101089217 A CN 101089217A
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Abstract
This invention relates to aluminium silicon-carbide metal-based complex material, and its preparation method. It is composed of: silicon-carbide powder, silicon powder and aluminium-magnesium alloy. The volume percentage of silicon-carbide is selected from 26% to 50%, so reducing its raw material cost. The silicon-carbide powder and silicon powder, with the same mesh size, are mixed, with the mixture volume being of 51% of total volume; so, enhancing the mechanical properties of the material. This material can be substituted for beryllium, aluminium, steel and the like for their better rigidity, thermal stability, abrasion-resistant and low density; and its thermal expansion coefficient being matched with various kinds of material, so it can be used in the fields of aerospace industry, auto industry and electronic industry.
Description
Technical field
The present invention relates to metal-base composites, the method for volume fraction aluminium silicon-carbide metal-base composite and preparing product in the particularly suitable.
Background technology
In low volume fraction aluminium silicon-carbide metal-base matrix material, silicon carbide volume fraction≤25%, matrix material can be made with paddling process.In high-volume fractional aluminium silicon-carbide metal-base matrix material, 50%＜silicon carbide volume fraction≤75%, matrix material can be made with method of impregnation.But for middle volume fraction aluminium silicon-carbide metal-base matrix material, 26%＜silicon carbide volume fraction≤50% lacks effective liquid method at present both at home and abroad and makes, and major cause is the silicon carbide prefabrication type of volume fraction in being difficult to make.Once the someone attempted in carborundum powder adding aluminium powder and came the adjusted volume mark, but because aluminium powder severe oxidation in infiltration heat-processed, therefore the composite property of making is very poor.
Summary of the invention
Goal of the invention of the present invention provides a kind of silicon carbide volume fraction accuracy controlling between 26%～50%, the intensity height, and rigidity is big, and wear resistance is good, and density is little, the middle volume fraction aluminium silicon-carbide metal-base composite that cost is low.
Another object of the present invention provides a kind of method of preparing product.
Realize that the goal of the invention technical scheme is to solve like this: middle volume fraction aluminium silicon-carbide metal-base matrix material, its outstanding progress is by volume: by carborundum powder 26～50%, silica flour 1～25%, aluminum magnesium alloy 48～50% is formed, and its silicon carbide volume fraction can be adjusted between 26% and 50%.
A kind of method by claim 1 or 2 described middle volume fraction aluminium silicon-carbide metal-base composite preparing products, undertaken by following step:
A, by accurate weighing carborundum powder of ratio requirement and silica flour, pour into to do in the ball mill and mixed 8 hours;
B, employing gel injection, injection moulding, curtain coating or dry pressure formed are made silicon carbide/silicon behind drying and the high temperature sintering and are mixed prefabrication type, and sintering temperature is no more than 1250 ℃;
C, with aluminum magnesium alloy fusing, depress in pressure or nothing and alloy liquid to be impregnated into mix in the prefabrication type, solidify the back form in the volume fraction aluminium silicon-carbide metal-base matrix material, pressure is not more than 30MPa, not having when pressure needs nitrogen protection;
D, according to the drawing requirement, matrix material need not process or on a small quantity processing after can come into operation.
The present invention compared with prior art, the silicon carbide volume fraction can be between 26% and 50% be adjusted arbitrarily, the intensity height, rigidity is big, wear resistance is good, density is little, cost is low.Equigranular silica flour and carborundum powder are mixed, make this single scale particulate total volume fraction remain 51%, improved the control accuracy of silicon carbide volume fraction, strengthened the over-all properties that mixes prefabrication type; Silica flour is dissolved in the aluminum magnesium alloy liquid, improved the continuity of matrix, improved the performance at interface; In alloy liquid, add the little metal magnesium elements, strengthened the interface bond strength of silicon carbide and alloy liquid, reduced the hole in the material, improved the mechanical property of material.Adopt volume fraction aluminium silicon-carbide metal-base matrix material among the present invention, can replace beryllium, aluminium, steel etc. need to be used to good rigidity, Heat stability is good, wear resistance height, occasion that density is little.Characteristics such as middle volume fraction aluminium silicon-carbide metal-base matrix material has the intensity height, and rigidity is big, and thermal expansivity and multiple material can mate, and wear resistance is good, and density is little can be widely used in industries such as aerospace, automobile, electronics.
Embodiment
Below in conjunction with embodiment content of the present invention is described further:
Embodiment 1
By carborundum powder 26～50%, silica flour 1～25%, aluminum magnesium alloy 48～50% is formed, and its silicon carbide volume fraction can be adjusted between 26% and 50%.
Silicon carbide is a kind of green silicon carbide.
Require as follows to raw-material chemical ingredients:
The title material index
Carborundum powder SiC 〉=97%
Silica flour Si 〉=99.9%
Aluminum magnesium alloy Al 〉=97.0%, 0.5% 〉=Mg 〉=3.0%
Size range
The material particle size scope: the particle size range of carborundum powder is 10 μ m≤D
50≤ 100 μ m, the particle size range of silica flour is 10 μ m≤D
50≤ 100 μ m.
The method of middle volume fraction aluminium silicon-carbide metal-base composite preparing product, undertaken by following step:
A, by accurate weighing carborundum powder of ratio requirement and silica flour, pour into to do in the ball mill and mixed 8 hours;
B, employing gel injection, injection moulding, curtain coating or dry pressure formed are made silicon carbide/silicon behind drying and the high temperature sintering and are mixed prefabrication type, and sintering temperature is no more than 1250 ℃;
C, with aluminum magnesium alloy fusing, depress in pressure or nothing and alloy liquid to be impregnated into mix in the prefabrication type, solidify the back form in the volume fraction aluminium silicon-carbide metal-base matrix material, pressure is not more than 30MPa, not having when pressure needs nitrogen protection;
D, according to the drawing requirement, matrix material need not process or on a small quantity processing after can come into operation.
Embodiment 2
Middle volume fraction aluminium silicon-carbide metal-base composite is characterized in that by volume: by carborundum powder 30～40%, and silica flour 10～20%, aluminum magnesium alloy 49～50% is formed, and the particle size range of described carborundum powder is 10 μ m≤D
50≤ 100 μ m, the particle size range of described silica flour is 10 μ m≤D
50≤ 100 μ m, product preparation method is with embodiment 1.
Embodiment 3
Carborundum powder 26～28%, silica flour 23～25%, aluminum magnesium alloy 49～50% is formed, and the particle size range of described carborundum powder is 10 μ m≤D
50≤ 100 μ m, the particle size range of described silica flour is 10 μ m≤D
50≤ 100 μ m, its silicon carbide volume fraction can be adjusted between 26% and 28%, and product preparation method is with embodiment 1.。
Embodiment 4
Carborundum powder 37～39%, silica flour 12～14%, aluminum magnesium alloy 49～50% is formed, and the particle size range of described carborundum powder is 10 μ m≤D
50≤ 100 μ m, the particle size range of described silica flour is 10 μ m≤D
50≤ 100 μ m, its silicon carbide volume fraction can be adjusted between 37% and 39%, and product preparation method is with embodiment 1.
Embodiment 5
Carborundum powder 48～50%, silica flour 1～3%, aluminum magnesium alloy 49～50% is formed, and the particle size range of described carborundum powder is 10 μ m≤D
50≤ 100 μ m, the particle size range of described silica flour is 10 μ m≤D
50≤ 100 μ m, its silicon carbide volume fraction can be adjusted between 48% and 50%, and product preparation method is with embodiment 1.
Claims (4)
1, middle volume fraction aluminium silicon-carbide metal-base composite is characterized in that by volume: by carborundum powder 26～50%, and silica flour 1～25%, aluminum magnesium alloy 48～50% is formed, and the particle size range of described carborundum powder is 10 μ m≤D
50≤ 100 μ m, the particle size range of described silica flour is 10 μ m≤D
50≤ 100 μ m.
2, middle volume fraction aluminium silicon-carbide metal-base composite according to claim 1, it is characterized in that by volume: by carborundum powder 30～40%, silica flour 10～20%, aluminum magnesium alloy 49～50% is formed, and the particle size range of described carborundum powder is 10 μ m≤D
50≤ 100 μ m, the particle size range of described silica flour is 10 μ m≤D
50≤ 100 μ m.
3, middle volume fraction aluminium silicon-carbide metal-base composite according to claim 1 is characterized in that by volume its silicon carbide volume fraction can be adjusted between 26% and 50%.
4, a kind of method by claim 1 or 2 described middle volume fraction aluminium silicon-carbide metal-base composite preparing products, undertaken by following step:
A, by accurate weighing carborundum powder of ratio requirement and silica flour, pour into to do in the ball mill and mixed 8 hours;
B, employing gel injection, injection moulding, curtain coating or dry pressure formed are made silicon carbide/silicon behind drying and the high temperature sintering and are mixed prefabrication type, and sintering temperature is no more than 1250 ℃;
C, with aluminum magnesium alloy fusing, depress in pressure or nothing and alloy liquid to be impregnated into mix in the prefabrication type, solidify the back form in the volume fraction aluminium silicon-carbide metal-base matrix material, pressure is not more than 30MPa, not having when pressure needs nitrogen protection;
D, according to the drawing requirement, matrix material need not process or on a small quantity processing after can come into operation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200710018295 CN101089217A (en) | 2007-07-19 | 2007-07-19 | Middle volume fraction aluminium silicon-carbide metal-base composite and method for preparing product |
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| CN 200710018295 CN101089217A (en) | 2007-07-19 | 2007-07-19 | Middle volume fraction aluminium silicon-carbide metal-base composite and method for preparing product |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102181753A (en) * | 2011-03-16 | 2011-09-14 | 西安明科微电子材料有限公司 | Silicon and silicon carbide hybrid enhanced aluminum-base composite material and preparation method thereof |
| CN102382999A (en) * | 2011-11-25 | 2012-03-21 | 中原工学院 | Method for preparing SiC reinforced molten aluminum alloy by using SiC-Si sinter lump |
| CN102500748A (en) * | 2011-10-25 | 2012-06-20 | 中南大学 | Method for preparing aluminum silicon carbide composite material |
| CN102503430A (en) * | 2011-09-23 | 2012-06-20 | 中国科学院上海硅酸盐研究所 | Method for preparing reaction-sintered silicon carbide ceramic by improved tape casting process |
| CN102806335A (en) * | 2011-05-31 | 2012-12-05 | 比亚迪股份有限公司 | Silicon carbide particle reinforced aluminum matrix composite and preparation method thereof |
| CN105543519A (en) * | 2015-12-30 | 2016-05-04 | 淮北师范大学 | Preparation method of SiC-(Al-Si) alloy composite material |
| CN108754357A (en) * | 2018-05-29 | 2018-11-06 | 苏州宏久航空防热材料科技有限公司 | A kind of SiC nanowire enhancing aluminum silicon carbide composite material and preparation method thereof |
| CN110272280A (en) * | 2019-01-21 | 2019-09-24 | 西安明科微电子材料有限公司 | A kind of AlSiC/AlSi two phase material and preparation method thereof |
-
2007
- 2007-07-19 CN CN 200710018295 patent/CN101089217A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102181753A (en) * | 2011-03-16 | 2011-09-14 | 西安明科微电子材料有限公司 | Silicon and silicon carbide hybrid enhanced aluminum-base composite material and preparation method thereof |
| CN102181753B (en) * | 2011-03-16 | 2013-04-17 | 西安明科微电子材料有限公司 | Silicon and silicon carbide hybrid enhanced aluminum-base composite material and preparation method thereof |
| CN102806335A (en) * | 2011-05-31 | 2012-12-05 | 比亚迪股份有限公司 | Silicon carbide particle reinforced aluminum matrix composite and preparation method thereof |
| CN102806335B (en) * | 2011-05-31 | 2015-07-22 | 比亚迪股份有限公司 | Silicon carbide particle reinforced aluminum matrix composite and preparation method thereof |
| CN102503430A (en) * | 2011-09-23 | 2012-06-20 | 中国科学院上海硅酸盐研究所 | Method for preparing reaction-sintered silicon carbide ceramic by improved tape casting process |
| CN102503430B (en) * | 2011-09-23 | 2013-10-16 | 中国科学院上海硅酸盐研究所 | Method for preparing reaction-sintered silicon carbide ceramic by improved tape casting process |
| CN102500748A (en) * | 2011-10-25 | 2012-06-20 | 中南大学 | Method for preparing aluminum silicon carbide composite material |
| CN102382999A (en) * | 2011-11-25 | 2012-03-21 | 中原工学院 | Method for preparing SiC reinforced molten aluminum alloy by using SiC-Si sinter lump |
| CN105543519A (en) * | 2015-12-30 | 2016-05-04 | 淮北师范大学 | Preparation method of SiC-(Al-Si) alloy composite material |
| CN108754357A (en) * | 2018-05-29 | 2018-11-06 | 苏州宏久航空防热材料科技有限公司 | A kind of SiC nanowire enhancing aluminum silicon carbide composite material and preparation method thereof |
| CN108754357B (en) * | 2018-05-29 | 2020-06-23 | 苏州宏久航空防热材料科技有限公司 | SiC nanowire reinforced aluminum silicon carbide composite material and preparation method thereof |
| CN110272280A (en) * | 2019-01-21 | 2019-09-24 | 西安明科微电子材料有限公司 | A kind of AlSiC/AlSi two phase material and preparation method thereof |
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