CN102321831B - High-spreadability tin-antimony-rare earth lead-free solder alloy and preparation method thereof - Google Patents
High-spreadability tin-antimony-rare earth lead-free solder alloy and preparation method thereof Download PDFInfo
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- CN102321831B CN102321831B CN2011103238713A CN201110323871A CN102321831B CN 102321831 B CN102321831 B CN 102321831B CN 2011103238713 A CN2011103238713 A CN 2011103238713A CN 201110323871 A CN201110323871 A CN 201110323871A CN 102321831 B CN102321831 B CN 102321831B
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- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 79
- 239000000956 alloy Substances 0.000 title claims abstract description 79
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 229910000679 solder Inorganic materials 0.000 title abstract description 5
- 229910052761 rare earth metal Inorganic materials 0.000 title abstract description 3
- 238000010791 quenching Methods 0.000 claims abstract description 16
- 230000000171 quenching effect Effects 0.000 claims abstract description 16
- 230000006698 induction Effects 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 238000003723 Smelting Methods 0.000 claims abstract description 8
- 238000003466 welding Methods 0.000 claims description 16
- 238000012216 screening Methods 0.000 claims description 14
- GVFOJDIFWSDNOY-UHFFFAOYSA-N antimony tin Chemical compound [Sn].[Sb] GVFOJDIFWSDNOY-UHFFFAOYSA-N 0.000 claims description 11
- 238000005275 alloying Methods 0.000 claims description 10
- 239000008188 pellet Substances 0.000 claims description 9
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 4
- 229910052797 bismuth Inorganic materials 0.000 abstract description 6
- 229910052738 indium Inorganic materials 0.000 abstract description 4
- 229910052779 Neodymium Inorganic materials 0.000 abstract description 3
- 229910052772 Samarium Inorganic materials 0.000 abstract description 3
- 229910052787 antimony Inorganic materials 0.000 abstract description 3
- 239000007769 metal material Substances 0.000 abstract description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract 2
- 229910052786 argon Inorganic materials 0.000 abstract 1
- 229910052793 cadmium Inorganic materials 0.000 abstract 1
- 238000007873 sieving Methods 0.000 abstract 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 5
- 238000010008 shearing Methods 0.000 description 5
- 229910052684 Cerium Inorganic materials 0.000 description 4
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 238000003892 spreading Methods 0.000 description 3
- 230000007480 spreading Effects 0.000 description 3
- 229910052718 tin Inorganic materials 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910020888 Sn-Cu Inorganic materials 0.000 description 2
- 229910020938 Sn-Ni Inorganic materials 0.000 description 2
- 229910019204 Sn—Cu Inorganic materials 0.000 description 2
- 229910008937 Sn—Ni Inorganic materials 0.000 description 2
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- -1 tin bismuth cuprum series Chemical class 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Abstract
The invention belongs to the field of metal materials, in particular to a high-spreadability tin-antimony-rare earth lead-free solder alloy and a preparation method thereof. The alloy is prepared from the following raw materials in percentage by weight: 7.0 to 9.0 percent of Sb, 0.01 to 0.03 percent of In, 1 to 3 percent of Bi, 0.01 to 0.03 percent of Cd, 0.01 to 0.03 percent of Sm, 0.01 to 0.03 percent of Nd and the balance of Sn. The preparation method comprises the following steps of: smelting the raw materials in the ratio in a vacuum induction furnace to obtain a master alloy; remelting in a remelting tubular crucible, wherein the remelting tubular crucible is arranged above a rim of a rotating wheel of a quick quenching furnace, and molten alloy is sprayed through holes with the diameter of 1mm at the bottom of the crucible under the action of argon and forms an alloy strip on the rim of the rotating wheel; properly crushing the alloy strip; and grinding in a ball mill, taking out, and sieving. The alloy has high strength and high spreadability.
Description
Technical field
The invention belongs to metal material field, especially is a kind of high spreadability tin antimony RE no-lead welding alloy and preparation method thereof.
Background technology
A kind of tin bismuth cuprum series leadless solder that does not have silver that existing leadless welding alloy such as CN200810022476.X number application are provided; This scolder is made up of tin, bismuth, copper, rare-earth element cerium and nickel; By weight percentage, bismuth-containing 1～6.5%, cupric 0.5～0.8%, contain cerium 0.01～0.1%, nickeliferous 0.01～0.2%, surplus is a tin; Take by weighing refined tin ingot, pure bismuth in proportion, reach Sn-Cu, Sn-Ce, Sn-Ni intermediate alloy ingot; Earlier with the tin slab fusing, and then add pure bismuth, Sn-Cu, Sn-Ce, Sn-Ni intermediate alloy ingot successively, treat to melt fully and composition pours into the scolder blank of scolder ingot or other shapes after evenly.Melting range is controlled in 215-227 ℃, spreading area 67-79 (Cu:mm2/0.2g).The solder joint shearing resistance is 29.7-43.5Mpa.The fusing point of this welding flux alloy is higher, and spreading property is limited, has therefore limited being widely used of material.
Summary of the invention
Order of the present invention provides a kind of high spreadability tin antimony RE no-lead welding alloy to above-mentioned technological deficiency, and this alloy not only intensity is high, and material has good spreadability.
Another object of the present invention provides a kind of high spreadability tin antimony RE no-lead welding alloy preparation method, and this preparing method's technology is simple, and production cost is low, is suitable for suitability for industrialized production.
The objective of the invention is to realize through following measure:
A kind of high spreadability tin antimony RE no-lead welding alloy, the weight percentage of this alloy each component is: Sb7.0-9.0wt%, In0.01～0.03wt%; Bi1～3wt%, Cd0.01～0.03wt%, Sm0.01～0.03wt%; Nd0.01～0.03wt%, surplus is Sn.
Wherein above-mentioned alloy is a powdery, and the granularity of alloying pellet is 60-90 μ m.
Above-mentioned high spreadability tin antimony RE no-lead welding alloy preparation method, this method comprises the steps:
A, Sb7.0-9.0wt%, In0.01～0.03wt%, Bi1～3wt%, Cd0.01～0.03wt%, Sm0.01～0.03wt%, Nd0.01～0.03wt% by weight percentage, surplus is that Sn prepares burden;
B, raw material is put into the vacuum induction furnace melting; Smelting temperature is 500-530 ℃, obtains mother alloy, and the remelting tubular type crucible of putting into the vacuum induction quick quenching furnace then carries out remelting; Remelting temperature is 350-370 ℃; The bottom of remelting tubular type crucible places 2-4mm place on the quick quenching furnace runner wheel rim, and above-mentioned mother alloy is placed in the tubular type crucible melt, under ar gas acting, be the runner edge contact of ejection and rotation the hole of 1mm behind the alloy molten from the crucible bottom diameter; Forming thickness is the 200-250 micron, and width is the alloy band of 3-6 millimeter; The rotational line speed of runner wheel rim is 11～13m/s; Then the alloy band is pulverized, and then after putting into grinding in ball grinder 15-20min, taken out screening, get screening and obtain the alloying pellet that granularity is 60-90 μ m.
It is following that the present invention compares the beneficial effect that prior art produces:
The fusing point of tin alloy is reduced for Sb among the present invention, In, Bi and spreadability improves.Cd can improve the spreadability and raising intensity of alloy, and Sm forms Cd11Sm, the SmSn3 compound of disperse, effectively improves the intensity of alloy, and Nd can improve spreadability.Therefore, the tin series lead-free solder that does not have silver provided by the invention not only have good welding property, and mechanical property is higher.
Alloy of the present invention adopts the fast quenching mode to cool off in solidifying, and can effectively reduce the phase in the alloy, guarantees the uniform distribution of chemical ingredients simultaneously, has so not only guaranteed welding technological properties, has also guaranteed the mechanical property of alloy.
Alloy property of the present invention is seen table 1.
Among the preparation method of the present invention, do not use precious metals silver, institute's raw materials cost of getting reduces; Alloy has guaranteed the homogeneity of alloying constituent, tissue and performance through cooling fast in addition, has therefore also just guaranteed the quality of alloy.Alloy of the present invention has the advantage that fusing point is low, Joint Strength is high and cost is low.So the degree of freedom of using is bigger, for range of application and the further joint performance of optimizing that enlarges this welding process all provides possibility.This alloy preparation technology is easy, and the alloy of production has good performance, is convenient to very much suitability for industrialized production.
Description of drawings
Fig. 1 is the organization chart of the high spreadability tin antimony RE no-lead welding alloy of the embodiment of the invention one preparation.
Embodiment:
Below in conjunction with Figure of description and specific embodiment the present invention is further specified:
Embodiment 1:
Each raw material is prepared burden by following mass percent: Sb7wt%, In0.01wt%, Bi1wt%, Cd0.01wt%, Sm0.01wt%, Nd0.01wt%, surplus is Sn.
Above-mentioned raw materials is put into the vacuum induction furnace melting; Smelting temperature is 520 ℃, obtains mother alloy, and the remelting tubular type crucible of putting into the vacuum induction quick quenching furnace then carries out remelting; Remelting temperature is 360 ℃; The bottom of remelting tubular type crucible places 2-4mm place on the quick quenching furnace runner wheel rim, and above-mentioned mother alloy is placed in the tubular type crucible melt, under ar gas acting, be the runner edge contact of ejection and rotation the hole of 1mm behind the alloy molten from the crucible bottom diameter; Forming thickness is the 200-250 micron, and width is the alloy band of 3-6 millimeter; The rotational line speed of runner wheel rim is 12m/s; Then the alloy band is pulverized, and then after putting into grinding in ball grinder 20min, taken out screening, get screening and obtain the alloying pellet that granularity is 60-90 μ m.
Embodiment 2:
Each raw material is prepared burden by following mass percent: Sb9wt%, In0.03wt%, Bi3wt%, Cd0.03wt%, Sm0.03wt%, Nd0.03wt%, surplus is Sn.
Above-mentioned raw materials is put into the vacuum induction furnace melting; Smelting temperature is 510 ℃, obtains mother alloy, and the remelting tubular type crucible of putting into the vacuum induction quick quenching furnace then carries out remelting; Remelting temperature is 370 ℃; The bottom of remelting tubular type crucible places 2-4mm place on the quick quenching furnace runner wheel rim, and above-mentioned mother alloy is placed in the tubular type crucible melt, under ar gas acting, be the runner edge contact of ejection and rotation the hole of 1mm behind the alloy molten from the crucible bottom diameter; Forming thickness is the 200-250 micron, and width is the alloy band of 3-6 millimeter; The rotational line speed of runner wheel rim is 12m/s; Then the alloy band is pulverized, and then after putting into grinding in ball grinder 20min, taken out screening, get screening and obtain the alloying pellet that granularity is 60-90 μ m.
Embodiment 3:
Each raw material is prepared burden by following mass percent: Sb8wt%, In0.02wt%, Bi2wt%, Cd0.02wt%, Sm0.02wt%, Nd0.02wt%, surplus is Sn.
Above-mentioned raw materials is put into the vacuum induction furnace melting; Smelting temperature is 520 ℃, obtains mother alloy, and the remelting tubular type crucible of putting into the vacuum induction quick quenching furnace then carries out remelting; Remelting temperature is 360 ℃; The bottom of remelting tubular type crucible places 2-4mm place on the quick quenching furnace runner wheel rim, and above-mentioned mother alloy is placed in the tubular type crucible melt, under ar gas acting, be the runner edge contact of ejection and rotation the hole of 1mm behind the alloy molten from the crucible bottom diameter; Forming thickness is the 200-250 micron, and width is the alloy band of 3-6 millimeter; The rotational line speed of runner wheel rim is 13m/s; Then the alloy band is pulverized, and then after putting into grinding in ball grinder 15min, taken out screening, get screening and obtain the alloying pellet that granularity is 60-90 μ m.
The comparative example 1: (proportioning components is instance in this case scope of design not)
Each raw material is prepared burden by following mass percent: Sb6wt%, In0.003wt%, Bi0.5wt%, Cd0.002wt%, Sm0.0012wt%, Nd0.005wt%, surplus is Sn.
Above-mentioned raw materials is put into the vacuum induction furnace melting; Smelting temperature is 510 ℃, obtains mother alloy, and the remelting tubular type crucible of putting into the vacuum induction quick quenching furnace then carries out remelting; Remelting temperature is 360 ℃; The bottom of remelting tubular type crucible places 2-4mm place on the quick quenching furnace runner wheel rim, and above-mentioned mother alloy is placed in the tubular type crucible melt, under ar gas acting, be the runner edge contact of ejection and rotation the hole of 1mm behind the alloy molten from the crucible bottom diameter; Forming thickness is the 200-250 micron, and width is the alloy band of 3-6 millimeter; The rotational line speed of runner wheel rim is 12m/s; Then the alloy band is pulverized, and then after putting into grinding in ball grinder 20min, taken out screening, get screening and obtain the alloying pellet that granularity is 60-90 μ m.
The comparative example 2: (proportioning components is instance in this case scope of design not)
Each raw material is prepared burden by following mass percent: Sb10wt%, In0.04wt%, Bi4wt%, Cd0.04wt%, Sm0.05wt%, Nd0.05wt%, surplus is Sn.
Above-mentioned raw materials is put into the vacuum induction furnace melting; Smelting temperature is 510 ℃, obtains mother alloy, and the remelting tubular type crucible of putting into the vacuum induction quick quenching furnace then carries out remelting; Remelting temperature is 360 ℃; The bottom of remelting tubular type crucible places 2-4mm place on the quick quenching furnace runner wheel rim, and above-mentioned mother alloy is placed in the tubular type crucible melt, under ar gas acting, be the runner edge contact of ejection and rotation the hole of 1mm behind the alloy molten from the crucible bottom diameter; Forming thickness is the 200-250 micron, and width is the alloy band of 3-6 millimeter; The rotational line speed of runner wheel rim is 12m/s; Then the alloy band is pulverized, and then after putting into grinding in ball grinder 20min, taken out screening, get screening and obtain the alloying pellet that granularity is 60-90 μ m.
In conjunction with each performance of products parameter in the following table:
Each performance of products parameter of table 1
Visible by last table, Sb, In, Bi, Cd, Sm, Nd add-on improve, and shearing resistance, spreading area all improve.But add-on is too much, and formed compound increases, and can destroy the shearing resistance of alloy, and influences the spreadability of alloy.The performance data of product four, five shows that Sb, In, Bi, Cd, Sm, Nd add-on do not reach due shearing resistance of alloy and spreadability less than scope of design.Add-on is too high, and compound is too much, can destroy the shearing resistance and the spreadability of alloy.Value is not in scope of design, and the fusing point of alloy can raise.
Claims (4)
1. one kind high spreadability tin antimony RE no-lead welding alloy is characterized in that the weight percentage of this alloy each component is: Sb7.0-9.0wt%; In0.01～0.03wt%, Bi1～3wt%, Cd0.01～0.03wt%; Sm0.01～0.03wt%, Nd0.01～0.03wt%, surplus is Sn.
2. high spreadability tin antimony RE no-lead welding alloy according to claim 1 is characterized in that above-mentioned alloy is a powdery, and the granularity of alloying pellet is 60-90 μ m.
3. one kind high spreadability tin antimony RE no-lead welding alloy preparation method is characterized in that this method comprises the steps:
A, Sb7.0-9.0wt%, In0.01～0.03wt%, Bi1～3wt%, Cd0.01～0.03wt%, Sm0.01～0.03wt%, Nd0.01～0.03wt% by weight percentage, surplus is that Sn prepares burden;
B, raw material is put into the vacuum induction furnace melting; Smelting temperature is 500-530 ℃, obtains mother alloy, and the remelting tubular type crucible of putting into the vacuum induction quick quenching furnace then carries out remelting; Remelting temperature is 350-370 ℃; The bottom of remelting tubular type crucible places 2-4mm place on the quick quenching furnace runner wheel rim, above-mentioned mother alloy is placed in the tubular type crucible melt, ejection and the runner edge contact of rotating from the hole of crucible bottom under ar gas acting behind the alloy molten; Forming thickness is the 200-250 micron, and width is the alloy band of 3-6 millimeter; Then the alloy band is pulverized, and then after putting into grinding in ball grinder 15-20min, taken out screening, get screening and obtain the alloying pellet that granularity is 60-90 μ m.
4. high spreadability tin antimony RE no-lead welding alloy preparation method according to claim 3 is characterized in that the diameter in said crucible bottom hole is 1mm; The rotational line speed of runner wheel rim is 11～13m/s.
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| CN2011103238713A CN102321831B (en) | 2011-10-24 | 2011-10-24 | High-spreadability tin-antimony-rare earth lead-free solder alloy and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6197253B1 (en) * | 1998-12-21 | 2001-03-06 | Allen Broomfield | Lead-free and cadmium-free white metal casting alloy |
| CN1868022A (en) * | 2003-10-15 | 2006-11-22 | 松下电器产业株式会社 | Lamp |
| CN101351297A (en) * | 2005-09-26 | 2009-01-21 | 美国铟泰公司 | Low melting temperature compliant solders |
-
2011
- 2011-10-24 CN CN2011103238713A patent/CN102321831B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6197253B1 (en) * | 1998-12-21 | 2001-03-06 | Allen Broomfield | Lead-free and cadmium-free white metal casting alloy |
| CN1868022A (en) * | 2003-10-15 | 2006-11-22 | 松下电器产业株式会社 | Lamp |
| CN101351297A (en) * | 2005-09-26 | 2009-01-21 | 美国铟泰公司 | Low melting temperature compliant solders |
Non-Patent Citations (1)
| Title |
|---|
| 黄乐 等.铅基快淬焊料与电子焊膏可焊性的比较.《金属功能材料》.1991,(第1期), * |
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