CN103464927B - A kind of aluminium copper silicon cerium solder for enhancing aluminum-base composite material by silicon carbide particles soldering and preparation method thereof - Google Patents
A kind of aluminium copper silicon cerium solder for enhancing aluminum-base composite material by silicon carbide particles soldering and preparation method thereof Download PDFInfo
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- CN103464927B CN103464927B CN201310405563.4A CN201310405563A CN103464927B CN 103464927 B CN103464927 B CN 103464927B CN 201310405563 A CN201310405563 A CN 201310405563A CN 103464927 B CN103464927 B CN 103464927B
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Abstract
The invention provides a kind of aluminium copper silicon cerium solder for enhancing aluminum-base composite material by silicon carbide particles soldering and preparation method thereof, pure Al and Al-20Si alloy is first placed in the crucible of vacuum induction melting furnace by preparation method, is filled with high-purity argon gas after vacuumizing; Then Fast Heating makes alloy melting complete, then joins in the Al-Si aluminium alloy of melting by the feeding device on induction furnace by pure Cu, forms Al-Si-Cu alloy molten solution; After fusing evenly, add Al-10Ce alloy, more fully react with Al-Si-Cu alloy molten solution, magnetic agitation, pour into a mould after insulation 30-40min, cooled and solidified in argon gas atmosphere; Remelting twice after the same method, finally pours into bar-shaped.Contained by this solder, component is few, and fusion temperature is low, and wettability is good, to the SiC being difficult to welding fabrication
p/ Al composite can form good welding point with it at about 580 DEG C, is suitable for applying.
Description
Technical field
The present invention relates to a kind of enhancing aluminum-base composite material by silicon carbide particles (hereinafter referred to as SiC
p/ Al) welding field, for SiC
pthe soldering field of/Al composite is a kind of aluminium copper silicon cerium solder, particularly a kind of aluminium copper silicon cerium solder for enhancing aluminum-base composite material by silicon carbide particles soldering and preparation method thereof containing Rare-Earth Ce.
Background technology
Volume fraction accounts for the high-volume fractional SiC of 55%-70%
pthe high heat conduction that/Al composite has, the characteristic such as low bulk and low-density, and mature preparation process, the raw material sources advantage such as fully makes it be with a wide range of applications in electronic package material field.Especially have irreplaceable superiority especially at aerospace field, reduce discharging at current national energy-saving, under the overall background of military equipment upgrading, composite more shows its critical role as good electronic encapsulating material.But its weldability is very poor, become the bottleneck problem limiting it and apply.Soldering is at the most popular Joining Technology in microelectronics Packaging field, but lacks the soldering of the suitable solder of brazing temperature between 500 DEG C-600 DEG C for this kind of composite at present.
Soldering SiC
pin the solder of/Al composite, Al-Si-Cu brazing filler metal is most widely used, and wherein composition is the eutectic solder of Al-5.5Si-28Cu, and eutectic temperature is 525 DEG C, meets the temperature requirement of soldering, and Cu add the mobility adding solder, but generate CuAl
2intermetallic compound fragility is comparatively large, must be optimized its composition.Rare earth significantly can improve the metallographic structure of aluminium alloy, crystal grain thinning, removes gas and objectionable impurities in aluminium alloy, improves the intensity of aluminium alloy, improves processing characteristics, plasticity, and improves intensity and toughness.The present invention is by being optimized Al-5.5Si-28Cu eutectic solder composition, prepare the aluminium copper silicon cerium solder of many groups of different Rare-Earth Ce content, microscopic examination and correlated performance test result show that the appropriate Rare-Earth Ce of interpolation contributes to improving the performance of brazing filler metal alloy, brazing tests result shows, aluminium copper silicon cerium solder is that one is applicable to SiC
pthe novel solder that/Al composite connects.
Summary of the invention
In sum, the object of the invention is the benefit in conjunction with adding rare earth in aluminium alloy, and existing Al-Si-Cu brazing filler metal Problems existing, by research different content rare earth to the affecting laws of aluminium copper silicon cerium solder performance, and have studied a kind of aluminium copper silicon cerium solder for enhancing aluminum-base composite material by silicon carbide particles soldering and preparation method thereof, and prepared one group containing the aluminium copper silicon cerium solder of Rare-Earth Ce, also use this kind of solder to SiC
p/ Al composite has carried out brazing tests, proves that the aluminium copper silicon cerium brazing filler metal alloy adopted has lower fusing point and stronger wettability, is applicable to the soldering processes of enhancing aluminum-base composite material by silicon carbide particles.
Technical scheme of the present invention realizes in the following manner:
For an aluminium copper silicon cerium solder for enhancing aluminum-base composite material by silicon carbide particles soldering, wherein, melting solder is raw materials used is: purity is the Cu of 99.99%, and purity is the Al of 99.99%, Al-Si alloy, Al-Ce intermediate alloy.
Further, described aluminium copper silicon cerium solder is containing the Cu of mass fraction 26.0% ~ 28.0%, and the Si of mass fraction 4.5% ~ 6.5%, the Ce of mass fraction 0.01%-0.5%, surplus is Al.
Further, described alusil alloy is Al-20Si alloy, and in Al-20Si alloy, the mass fraction of Al is the mass fraction of 80%, Ce is 20%;
Further, described aluminium cerium intermediate alloy is Al-10Ce intermediate alloy, and in Al-10Ce intermediate alloy, the mass fraction of Al is the mass fraction of 90%, Ce is 10%.
For a preparation method for the aluminium copper silicon cerium solder of enhancing aluminum-base composite material by silicon carbide particles soldering, comprise the following steps:
1) pure Al and alusil alloy are placed in the crucible of vacuum induction melting furnace, after vacuumizing, are filled with high-purity argon gas;
2) quickly heat up to 750 ~ 800 DEG C, make the alloy melting in crucible complete, then by the feeding device on induction furnace, pure Cu is joined in the Al-Si aluminium alloy of melting, form Al-Si-Cu alloy molten solution;
3) after fusing evenly, vacuum induction melting furnace is warming up to about 800 DEG C, and make temperature stabilization, then add aluminium cerium intermediate alloy by feeding device, itself and Al-Si-Cu alloy molten solution are fully reacted, magnetic agitation in addition, prevent rare earth segregation, rare earth is diffused into rapidly in melt equably, after being incubated 30-40min subsequently at 600 ~ 650 DEG C, leave standstill about 2 minutes, pour into a mould into metal type dies, cooled and solidified in argon gas atmosphere;
4) remelting twice after the same method after the oxide skin that the removal of taking-up brazing filler metal alloy is surperficial, makes each diffusion of components even, finally pours into bar-shaped, obtain aluminium copper silicon cerium solder.
Good effect of the present invention is:
1, the present invention by formulate special smelting technology solve in the past normative poor in solder method of smelting; the shortcoming that operability is not strong; adopt atmosphere of inert gases protection to reduce brazing filler metal alloy burn out rate simultaneously; when it also avoid the introducing of impurity and adopted protection salt melting solder in the past, the element such as Na, K is to the interference of RE Modified effect; decrease influence factor, improve the precision of experimental study.The aluminium copper silicon cerium brazing filler metal alloy adopted has lower fusing point and stronger wettability, is applicable to the soldering processes of enhancing aluminum-base composite material by silicon carbide particles.
2, the present invention passes through embodiment, illustrate that the present invention contains the performance of the aluminium copper silicon cerium solder of Rare-Earth Ce with experimental data, and compare with the aluminium copper silicon solder obtained under the same conditions, prove that the aluminium copper silicon cerium brazing filler metal alloy adopted has lower fusing point and stronger wettability, be applicable to the soldering processes of enhancing aluminum-base composite material by silicon carbide particles.
Accompanying drawing explanation
Fig. 1 is the metallograph of the Al-5.5Si-28Cu brazing filler metal alloy of comparative example 1;
Fig. 2 is the metallograph of the Al-5.5Si-28Cu-0.05Ce brazing filler metal alloy of embodiment 2;
Fig. 3 is the microscopic structure of the Al-5.5Si-28Cu brazing filler metal alloy utilizing ESEM to obtain;
Fig. 4 is the microscopic structure of the Al-5.5Si-28Cu-0.05Ce brazing filler metal alloy utilizing ESEM to obtain;
Fig. 5 is SiC
pthe seam center that/Al composite obtains after using Al-5.5Si-28Cu solder to carry out vacuum brazing;
Fig. 6 is SiC
pthe seam center that/Al composite obtains after using Al-5.5Si-28Cu-0.05Ce solder to carry out vacuum brazing.
The aluminium copper silicon cerium solder containing Rare-Earth Ce in order to set forth the present invention has good processing performance and mechanical property, the metallographic microstructure figure of special attached Al-5.5Si-28Cu solder and the embodiment of the present invention 2 and both ESEM micro-organization charts, as shown in Figure 1, Figure 2, Figure 3, Figure 4, two figure are compared, discloses the reason of its performance raising from microcosmic angle.
Can find out the eutectic Si containing needle-like Al-5.5Si-28Cu solder tissue from Fig. 1 and Fig. 3, a large amount of existence of the eutectic Si of this needle-like can reduce the mechanical property of solder.After the present invention adds Rare-Earth Ce, the eutectic Si quantity of Fig. 2 and Fig. 4 needle-like obviously reduces, and organizing in alloy is more even, and rare earth, with strip or sheet form distribution, significantly improves the mechanical property of brazing filler metal alloy.
Use diamond fretsaw by block SiC
pit is length is 20mm that/Al composite cuts into specification, width is 10mm, thickness is the sheet of 2mm, the flaky composite material choosing some carries out chemical nickel plating process, composite after nickel plating adopts the form of overlap joint to assemble, namely the solder after vacuum gets rid of band is placed in the middle of two panels composite, and clamps with special fixture.Then vacuum brazing furnace is put into, pumping high vacuum (>1.0 × 10
-3pa), be warming up to 580 DEG C with the heating rate of 20 DEG C/min, after insulation 15min, be cooled to room temperature, open vacuum brazing furnace door and take out weldment.Use the welding point pattern of Al-5.5Si-28Cu solder and use Al-5.5Si-28Cu-0.05Ce solder respectively as shown in Figure 5 and Figure 6.
As can be seen from Fig. 5 and Fig. 6, under identical welding condition, to the SiC after chemical nickel plating
pafter/Al composite carries out vacuum brazing, observable high multiple weld seam microscopic appearance, compared with use Al-5.5Si-28Cu solder, metallurgical binding is completely defined after using Al-5.5Si-28Cu-0.05Ce solder to carry out vacuum brazing, solder and mother metal combine closely, solder is good to the SiC wetting of particulates in composite, is combined well with alloy matrix aluminum simultaneously.
Detailed description of the invention
Below in conjunction with embodiment and legend, the present invention is described in further detail.
The present invention Al-Si, Al-Ce used alloy is the alloy of commercially available definite composition, the amount of Al-Si, Al-Ce, Cu of adding is obtained by the ratio in each comfortable brazing filler metal alloy of Si, Ce, Cu, and the amount that total amount deducts Al-Si, Al-Ce, Cu is required pure Al amount.After determining alloying component, before alloy smelting, the computational methods of required each material quality are as follows:
Because Cu used in solder smelting process is fine copper, therefore, the quality ω of Cu needed for solder first can be calculated according to the mass fraction of Cu
1, the quality ω of required aluminium cerium intermediate alloy is then calculated according to the mass fraction of Rare-Earth Ce
2, the quality ω of required alusil alloy is secondly calculated according to the mass fraction of Si
3, finally calculate the quality ω of required pure Al
4=100-ω
1-ω
2-ω
3.
For embodiment 1, the computational methods of required each material quality before further illustrating alloy smelting.Brazing filler metal alloy gross mass is all with 100 grams of calculating.The brazing filler metal alloy composition smelted is Al-5.5Si-28Cu-0.01Ce, is fine copper owing to smelting Cu used, first can calculate the quality ω of Cu needed for solder according to the mass fraction of Cu 28%
1=28.00 grams, then calculate the quality ω of required aluminium cerium intermediate alloy Al-10Ce according to the mass fraction 0.01% of Rare-Earth Ce
2=0.01/10%=0.10 gram, secondly calculates the quality ω of required alusil alloy Al-20Si according to the mass fraction 5.5% of Si
3=5.5/20%=27.50 gram, finally calculates the quality ω of required pure Al
4=100-ω
1-ω
2-ω
3=100-28.00-0.10-27.50=44.40 gram.
Comparative example 1
Pure for 44.50g Al and 27.50gAl-20Si alloy is placed in the crucible of vacuum induction melting furnace, after pumping high vacuum, is filled with high-purity argon gas; Then quickly heat up to 750 DEG C, make the alloy melting in crucible complete, then by the feeding device on induction furnace, pure for 28.00g Cu is joined in the Al-Si aluminium alloy of melting, form Al-Si-Cu alloy molten solution; In addition magnetic agitation, leaves standstill about 2 minutes after being incubated 30-40min, pour into a mould into metal type dies, cooled and solidified in argon gas atmosphere at 600 DEG C; Remelting twice after the same method after taking-up, makes each diffusion of components even, finally pours into bar-shaped stand-by.
Comparative example 2
Pure for 51.50g Al and 22.50gAl-20Si alloy is placed in the crucible of vacuum induction melting furnace, after pumping high vacuum, is filled with high-purity argon gas; Then quickly heat up to 800 DEG C, make the alloy melting in crucible complete, then by the feeding device on induction furnace, pure for 26.00g Cu is joined in the Al-Si aluminium alloy of melting, form Al-Si-Cu alloy molten solution; In addition magnetic agitation, leaves standstill about 2 minutes after being incubated 30-40min, pour into a mould into metal type dies, cooled and solidified in argon gas atmosphere at 600 DEG C; Remelting twice after the same method after taking-up, makes each diffusion of components even, finally pours into bar-shaped stand-by.
Comparative example 3
Pure for 39.50g Al and 32.50gAl-20Si alloy is placed in the crucible of vacuum induction melting furnace, after pumping high vacuum, is filled with high-purity argon gas; Then quickly heat up to 800 DEG C, make the alloy melting in crucible complete, then by the feeding device on induction furnace, pure for 28.00g Cu is joined in the Al-Si aluminium alloy of melting, form Al-Si-Cu alloy molten solution; In addition magnetic agitation, leaves standstill about 2 minutes after being incubated 30-40min, pour into a mould into metal type dies, cooled and solidified in argon gas atmosphere at 650 DEG C; Remelting twice after the same method after taking-up, makes each diffusion of components even, finally pours into bar-shaped stand-by.
Comparative example 4
Pure for 40.50g Al and 32.50gAl-20Si alloy is placed in the crucible of vacuum induction melting furnace, after pumping high vacuum, is filled with high-purity argon gas; Then quickly heat up to 750 DEG C, make the alloy melting in crucible complete, then by the feeding device on induction furnace, pure for 27.00g Cu is joined in the Al-Si aluminium alloy of melting, form Al-Si-Cu alloy molten solution; In addition magnetic agitation, leaves standstill about 2 minutes after being incubated 30-40min, pour into a mould into metal type dies, cooled and solidified in argon gas atmosphere at 650 DEG C; Remelting twice after the same method after taking-up, makes each diffusion of components even, finally pours into bar-shaped stand-by.
Embodiment 1
Pure for 44.40g Al and 27.50gAl-20Si alloy is placed in the crucible of vacuum induction melting furnace, after vacuumizing, is filled with high-purity argon gas; Then quickly heat up to 700 DEG C ~ 720 DEG C, make the alloy melting in crucible complete, then by the feeding device on induction furnace, pure for 28.00g Cu is joined in the Al-Si aluminium alloy of melting, form Al-Si-Cu alloy molten solution; After fusing evenly, by temperature stabilization at about 750 DEG C, then the Al-10Ce intermediate alloy of 0.10g is added by feeding device, itself and Al-Si-Cu alloy molten solution are fully reacted, magnetic agitation in addition, leave standstill about 2 minutes be incubated 30-40min at 600 DEG C after, pour into a mould into metal type dies, cooled and solidified in argon gas atmosphere; Remelting twice after the same method after taking-up, makes each diffusion of components even, finally pours into bar-shaped stand-by.
Embodiment 2
Pure for 44.00g Al and 27.50gAl-20Si alloy is placed in the crucible of vacuum induction melting furnace, after vacuumizing, is filled with high-purity argon gas; Then quickly heat up to 750 DEG C, make the alloy melting in crucible complete, then by the feeding device on induction furnace, pure for 28.00g Cu is joined in the Al-Si aluminium alloy of melting, form Al-Si-Cu alloy molten solution; After fusing evenly, by temperature stabilization at about 750 DEG C, then the Al-10Ce intermediate alloy of 0.50g is added by feeding device, itself and Al-Si-Cu alloy molten solution are fully reacted, magnetic agitation in addition, leave standstill about 2 minutes be incubated 30-40min at 600 DEG C after, pour into a mould into metal type dies, cooled and solidified in argon gas atmosphere; Remelting twice after the same method after taking-up, makes each diffusion of components even, finally pours into bar-shaped stand-by.
Embodiment 3
Pure for 43.50g Al and 27.50gAl-20Si alloy is placed in the crucible of vacuum induction melting furnace, after vacuumizing, is filled with high-purity argon gas; Then quickly heat up to 700 DEG C ~ 720 DEG C, make the alloy melting in crucible complete, then by the feeding device on induction furnace, pure for 28.00g Cu is joined in the Al-Si aluminium alloy of melting, form Al-Si-Cu alloy molten solution; After fusing evenly, by temperature stabilization at about 750 DEG C, then the Al-10Ce intermediate alloy of 1.00g is added by feeding device, itself and Al-Si-Cu alloy molten solution are fully reacted, magnetic agitation in addition, leave standstill about 2 minutes be incubated 30-40min at 600 DEG C after, pour into a mould into metal type dies, cooled and solidified in argon gas atmosphere; Remelting twice after the same method after taking-up, makes each diffusion of components even, finally pours into bar-shaped stand-by.
Embodiment 4
Pure for 39.50g Al and 27.50gAl-20Si alloy is placed in the crucible of vacuum induction melting furnace, after vacuumizing, is filled with high-purity argon gas; Then quickly heat up to 700 DEG C ~ 720 DEG C, make the alloy melting in crucible complete, then by the feeding device on induction furnace, pure for 28.00g Cu is joined in the Al-Si aluminium alloy of melting, form Al-Si-Cu alloy molten solution; After fusing evenly, by temperature stabilization at about 750 DEG C, then the Al-10Ce intermediate alloy of 5.00g is added by feeding device, itself and Al-Si-Cu alloy molten solution are fully reacted, magnetic agitation in addition, leave standstill about 2 minutes be incubated 30-40min at 600 DEG C after, pour into a mould into metal type dies, cooled and solidified in argon gas atmosphere; Remelting twice after the same method after taking-up, makes each diffusion of components even, finally pours into bar-shaped stand-by.
Embodiment 5
Pure for 51.00g Al and 22.50gAl-20Si alloy is placed in the crucible of vacuum induction melting furnace, after vacuumizing, is filled with high-purity argon gas; Then quickly heat up to 700 DEG C ~ 720 DEG C, make the alloy melting in crucible complete, then by the feeding device on induction furnace, pure for 26.00g Cu is joined in the Al-Si aluminium alloy of melting, form Al-Si-Cu alloy molten solution; After fusing evenly, by temperature stabilization at about 800 DEG C, then the Al-10Ce intermediate alloy of 0.50g is added by feeding device, itself and Al-Si-Cu alloy molten solution are fully reacted, magnetic agitation in addition, leave standstill about 2 minutes be incubated 30-40min at 600 DEG C after, pour into a mould into metal type dies, cooled and solidified in argon gas atmosphere; Remelting twice after the same method after taking-up, makes each diffusion of components even, finally pours into bar-shaped stand-by.
Embodiment 6
Pure for 50.50g Al and 22.50gAl-20Si alloy is placed in the crucible of vacuum induction melting furnace, after vacuumizing, is filled with high-purity argon gas; Then quickly heat up to 700 DEG C ~ 720 DEG C, make the alloy melting in crucible complete, then by the feeding device on induction furnace, pure for 26.00g Cu is joined in the Al-Si aluminium alloy of melting, form Al-Si-Cu alloy molten solution; After fusing evenly, by temperature stabilization at about 800 DEG C, then the Al-10Ce intermediate alloy of 1.00g is added by feeding device, itself and Al-Si-Cu alloy molten solution are fully reacted, magnetic agitation in addition, leave standstill about 2 minutes be incubated 30-40min at 600 DEG C after, pour into a mould into metal type dies, cooled and solidified in argon gas atmosphere; Remelting twice after the same method after taking-up, makes each diffusion of components even, finally pours into bar-shaped stand-by.
Embodiment 7
Pure for 39.00g Al and 32.50gAl-20Si alloy is placed in the crucible of vacuum induction melting furnace, after pumping high vacuum, is filled with high-purity argon gas; Then quickly heat up to 800 DEG C, make the alloy melting in crucible complete, then by the feeding device on induction furnace, pure for 28.00g Cu is joined in the Al-Si aluminium alloy of melting, form Al-Si-Cu alloy molten solution; After fusing evenly, by temperature stabilization at about 800 DEG C, then the Al-10Ce intermediate alloy of 0.50g is added by feeding device, itself and Al-Si-Cu alloy molten solution are fully reacted, magnetic agitation in addition, leave standstill about 2 minutes be incubated 30-40min at 650 DEG C after, pour into a mould into metal type dies, cooled and solidified in argon gas atmosphere; Remelting twice after the same method after taking-up, makes each diffusion of components even, finally pours into bar-shaped stand-by.
Embodiment 8
Pure for 38.50g Al and 32.50gAl-20Si alloy is placed in the crucible of vacuum induction melting furnace, after pumping high vacuum, is filled with high-purity argon gas; Then quickly heat up to 800 DEG C, make the alloy melting in crucible complete, then by the feeding device on induction furnace, pure for 28.00g Cu is joined in the Al-Si aluminium alloy of melting, form Al-Si-Cu alloy molten solution; After fusing evenly, by temperature stabilization at about 800 DEG C, then the Al-10Ce intermediate alloy of 1.00g is added by feeding device, itself and Al-Si-Cu alloy molten solution are fully reacted, magnetic agitation in addition, leave standstill about 2 minutes be incubated 30-40min at 650 DEG C after, pour into a mould into metal type dies, cooled and solidified in argon gas atmosphere; Remelting twice after the same method after taking-up, makes each diffusion of components even, finally pours into bar-shaped stand-by.
Embodiment 9
Pure for 40.00g Al and 32.50gAl-20Si alloy is placed in the crucible of vacuum induction melting furnace, after pumping high vacuum, is filled with high-purity argon gas; Then quickly heat up to 750 DEG C, make the alloy melting in crucible complete, then by the feeding device on induction furnace, pure for 27.00g Cu is joined in the Al-Si aluminium alloy of melting, form Al-Si-Cu alloy molten solution; After fusing evenly, by temperature stabilization at about 700 DEG C, then the Al-10Ce intermediate alloy of 0.50g is added by feeding device, itself and Al-Si-Cu alloy molten solution are fully reacted, magnetic agitation in addition, leave standstill about 2 minutes be incubated 30-40min at 650 DEG C after, pour into a mould into metal type dies, cooled and solidified in argon gas atmosphere; Remelting twice after the same method after taking-up, makes each diffusion of components even, finally pours into bar-shaped stand-by.
Embodiment 10
Pure for 39.50g Al and 32.50gAl-20Si alloy is placed in the crucible of vacuum induction melting furnace, after pumping high vacuum, is filled with high-purity argon gas; Then quickly heat up to 750 DEG C, make the alloy melting in crucible complete, then by the feeding device on induction furnace, pure for 27.00g Cu is joined in the Al-Si aluminium alloy of melting, form Al-Si-Cu alloy molten solution; After fusing evenly, by temperature stabilization at about 700 DEG C, then the Al-10Ce intermediate alloy of 1.00g is added by feeding device, itself and Al-Si-Cu alloy molten solution are fully reacted, magnetic agitation in addition, leave standstill about 2 minutes be incubated 30-40min at 650 DEG C after, pour into a mould into metal type dies, cooled and solidified in argon gas atmosphere; Remelting twice after the same method after taking-up, makes each diffusion of components even, finally pours into bar-shaped stand-by.
In the mode of chart, experimental data by the following examples illustrates that the present invention contains the performance of the aluminium copper silicon cerium solder of Rare-Earth Ce, and compare with the aluminium copper silicon solder obtained under the same conditions.
Table 1 solder composition and fusion temperature
Table 1 is 10 kinds of aluminium copper silicon cerium solders containing Rare-Earth Ce and Al-Si-Cu solder component list, and in table, composition is mass percent, gives liquidus temperature and the solidus temperature of each solder simultaneously; As can be seen from the table, the embodiment of the present invention 1 ~ 10 is little on the fusion temperature impact of brazing filler metal alloy after adding Rare-Earth Ce.
The hardness of table 2 solder and spreading area experimental result
Table 2 is embodiment of the present invention 1 ~ 10 and the comparing of Al-Si-Cu solder hardness and spreading area.As can be seen from the table, the hardness of the embodiment of the present invention 1 ~ 10 and spreading area increase than Al-Si-Cu solder.
Claims (1)
1., for a preparation method for the aluminium copper silicon cerium solder of enhancing aluminum-base composite material by silicon carbide particles soldering, it is characterized in that, the method comprises the following steps:
1) pure Al and alusil alloy are placed in the crucible of vacuum induction melting furnace, after vacuumizing, are filled with high-purity argon gas;
2) quickly heat up to 750 ~ 800 DEG C, make the alloy melting in crucible complete, then by the feeding device on induction furnace, pure Cu is joined in the Al-Si aluminium alloy of melting, form Al-Si-Cu alloy molten solution;
3) after fusing evenly, vacuum induction melting furnace is warming up to about 800 DEG C, and make temperature stabilization, then add aluminium cerium intermediate alloy by feeding device, itself and Al-Si-Cu alloy molten solution are fully reacted, magnetic agitation in addition, prevent rare earth segregation, rare earth is diffused into rapidly in melt equably, after being incubated 30-40min subsequently at 600 ~ 650 DEG C, leave standstill about 2 minutes, pour into a mould into metal type dies, cooled and solidified in argon gas atmosphere;
4) remelting twice after the same method after the oxide skin that the removal of taking-up brazing filler metal alloy is surperficial, makes each diffusion of components even, finally pours into bar-shaped, obtain aluminium copper silicon cerium solder.
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| CN105479032A (en) * | 2014-09-18 | 2016-04-13 | 河南理工大学 | Aluminum-silicon-copper-yttrium solder for silicon carbide particle reinforced aluminum matrix composite soldering and preparation method for aluminum-silicon-copper-yttrium solder |
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| CN106736011B (en) * | 2016-12-06 | 2019-06-28 | 河南理工大学 | A kind of SiCp/Al composite material powdered filler metal preparation and application |
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