JPH0555638A - Connecting method for thermoelctric converter - Google Patents
Connecting method for thermoelctric converterInfo
- Publication number
- JPH0555638A JPH0555638A JP3186817A JP18681791A JPH0555638A JP H0555638 A JPH0555638 A JP H0555638A JP 3186817 A JP3186817 A JP 3186817A JP 18681791 A JP18681791 A JP 18681791A JP H0555638 A JPH0555638 A JP H0555638A
- Authority
- JP
- Japan
- Prior art keywords
- pbte
- brazing
- joining
- electrode
- reactivity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims description 9
- 239000000463 material Substances 0.000 claims abstract description 33
- 238000005219 brazing Methods 0.000 claims abstract description 31
- 229910002665 PbTe Inorganic materials 0.000 claims abstract description 22
- OCGWQDWYSQAFTO-UHFFFAOYSA-N tellanylidenelead Chemical compound [Pb]=[Te] OCGWQDWYSQAFTO-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- 230000009257 reactivity Effects 0.000 claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 8
- 238000005304 joining Methods 0.000 claims description 25
- 238000009792 diffusion process Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 abstract description 18
- 238000000576 coating method Methods 0.000 abstract description 18
- 230000037431 insertion Effects 0.000 abstract 1
- 238000003780 insertion Methods 0.000 abstract 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 101150033765 BAG1 gene Proteins 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
Landscapes
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は熱電変換素子の接合方法
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for joining thermoelectric conversion elements.
【０００２】[0002]
【従来の技術】従来、熱電変換モジュールの製造におい
て熱電変換素子であるＰｂＴｅと電極とを接合するにあ
たっては、はんだ付インサート材を用いた拡散接合や圧
接等の方法が用いられている。しかしながらはんだ付イ
ンサート材を用いた拡散接合では、はんだの融点：通常
３００℃以上の温度で使用できないとともに、ＰｂＴｅ
とインサート材とが反応して使用中に特性が変化する不
具合があり、また圧接では、接合率が不十分である。2. Description of the Related Art Conventionally, in the production of a thermoelectric conversion module, when joining PbTe, which is a thermoelectric conversion element, and an electrode, methods such as diffusion joining and pressure welding using a soldering insert material have been used. However, in the diffusion bonding using the soldering insert material, the melting point of the solder: usually cannot be used at a temperature of 300 ° C. or higher, and PbTe
And the insert material react with each other to change the characteristics during use, and in the pressure welding, the bonding rate is insufficient.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、このような
事情に鑑みて提案されたもので、接合時及び使用中のＰ
ｂＴｅとろう材，インサート材又は電極との反応を防止
できるとともに、接合率を向上できる熱電変換素子の接
合方法を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been proposed in view of such circumstances, and it is proposed that the P during bonding and during use is
It is an object of the present invention to provide a method for joining a thermoelectric conversion element, which can prevent a reaction between bTe and a brazing material, an insert material or an electrode and can improve the joining rate.
【０００４】[0004]
【課題を解決するための手段】そのために本発明は、熱
電変換素子であるＰｂＴｅと電極とを接合する際に、Ｐ
ｂＴｅの接合面に予めＰｂＴｅと接合温度付近で反応性
を有さない金属をコーティングし、ＰｂＴｅと電極との
間にろう材又はインサート材を挿入してろう付又は拡散
接合で接合することを特徴とする。Therefore, according to the present invention, when PbTe, which is a thermoelectric conversion element, and an electrode are joined, P
The bonding surface of bTe is coated beforehand with a metal that does not react with PbTe near the bonding temperature, and a brazing material or an insert material is inserted between PbTe and the electrode to bond by brazing or diffusion bonding. And
【０００５】[0005]
【作用】本発明熱電変換素子の接合方法においては、Ｐ
ｂＴｅ接合面のコーティングは、接合時又は使用中にＰ
ｂＴｅとろう材，インサート材又は電極との反応を防止
するバリアーとして働く。またＰｂＴｅと電極との間に
ろう材又はインサート材を挿入してろう付又は拡散接合
で接合することにより、接合率の向上を図れる。更にコ
ーティングとろう材又はインサート材との反応性が不十
分な場合には、この反応防止用コーティングの上にろう
材又はインサート材と反応性を有する金属をコーティン
グすることにより、ろう材の濡れ性又はインサート材の
反応性を確保できる。In the method of joining thermoelectric conversion elements according to the present invention, P
The coating of the bTe bonding surface is P during bonding or during use.
It acts as a barrier to prevent the reaction between bTe and the brazing material, insert material or electrode. Further, by inserting a brazing material or an insert material between the PbTe and the electrode and joining them by brazing or diffusion joining, the joining rate can be improved. If the reactivity of the coating with the brazing material or insert material is insufficient, the wettability of the brazing material can be improved by coating a metal having reactivity with the brazing material or insert material on this reaction-preventing coating. Alternatively, the reactivity of the insert material can be secured.
【０００６】[0006]
【実施例】本発明熱電変換素子の接合方法をろう付接合
に適用した一実施例を図１断面図について説明する。熱
電変換素子であるＰｂＴｅ１は断面が５mm×５mm，高さ
が９mmの角柱状であり、純銅の電極２に接合されて熱変
換モジュールが製造される。まずＰｂＴｅ１の接合面に
ろう付温度６５０℃付近でＰｂＴｅと反応性を有さない
モリブデンを、第１層コーティング３としてスパッタリ
ングで約５μｍ厚さコーティングした。更に第１層コー
ティング３とろう材５との反応性を増すために、第１層
コーティング３の上に第２層コーティング４として無電
解ニッケルメッキを施した。EXAMPLE An example in which the method for joining thermoelectric conversion elements according to the present invention is applied to brazing joining will be described with reference to FIG. The thermoelectric conversion element PbTe1 is a prism having a cross section of 5 mm × 5 mm and a height of 9 mm, and is bonded to the pure copper electrode 2 to manufacture a heat conversion module. First, molybdenum, which does not react with PbTe at a brazing temperature of about 650 ° C., was coated on the joint surface of PbTe1 by sputtering to a thickness of about 5 μm as the first layer coating 3. Further, in order to increase the reactivity between the first layer coating 3 and the brazing filler metal 5, electroless nickel plating was applied as the second layer coating 4 on the first layer coating 3.
【０００７】次いでＰｂＴｅ１と電極２の間に厚さ５０
μｍの箔状のろう材５：ＢＡｇ−１を挿入し、ろう付し
た。ろう付温度は６５０℃、雰囲気はアルゴン雰囲気、
加圧は0.1 kgｆ／mm2 である。接合後、接合部断面を調
査したが、欠陥等の無い良好な接合体が得られた。Then, a thickness of 50 is provided between the PbTe 1 and the electrode 2.
A foil-shaped brazing filler metal 5: BAg-1 having a thickness of μm was inserted and brazed. The brazing temperature is 650 ° C, the atmosphere is an argon atmosphere,
Pressurization is 0.1 kgf / mm 2 . After the joining, the cross section of the joined portion was examined, and a good joined body without defects was obtained.
【０００８】かくして、このようにＰｂＴｅ１と電極２
とをろう付接合するにあたり、ＰｂＴｅ１の接合面に、
ＰｂＴｅ１と接合温度付近で反応性を有さないモリブデ
ンを第１層コーティング３としてコーティングすること
により、接合時及び使用中のＰｂＴｅ１とろう材５又は
電極２との反応を防止できる。またＰｂＴｅ１と電極２
との間にろう材５を挿入してろう付接合することによ
り、接合率を向上できる。更に第１層コーティング３の
上にろう材５と反応性を有するニッケルを第２層コーテ
ィング４としてコーティングすることにより、接合時の
ろう材５の濡れ性を確保できる。Thus, in this way, PbTe1 and electrode 2
When brazing and joining the and, to the joint surface of PbTe1,
By coating the first layer coating 3 with molybdenum, which has no reactivity with PbTe1 near the bonding temperature, it is possible to prevent the reaction between PbTe1 and the brazing material 5 or the electrode 2 during bonding and during use. Also, PbTe1 and electrode 2
The brazing rate can be improved by inserting the brazing material 5 between and and brazing and joining. Further, by coating the first layer coating 3 with nickel having reactivity with the brazing material 5 as the second layer coating 4, the wettability of the brazing material 5 at the time of joining can be secured.
【０００９】[0009]
【発明の効果】要するに本発明によれば、熱電変換素子
であるＰｂＴｅと電極とを接合する際に、ＰｂＴｅの接
合面に予めＰｂＴｅと接合温度付近で反応性を有さない
金属をコーティングし、ＰｂＴｅと電極との間にろう材
又はインサート材を挿入してろう付又は拡散接合で接合
することにより、接合時及び使用中のＰｂＴｅとろう
材，インサート材又は電極との反応を防止できるととも
に、接合率を向上できる熱電変換素子の接合方法を得る
から、本発明は産業上極めて有益なものである。In summary, according to the present invention, when joining PbTe, which is a thermoelectric conversion element, and an electrode, a joint surface of PbTe is coated beforehand with a metal having no reactivity with PbTe in the vicinity of the joining temperature, By inserting a brazing material or insert material between PbTe and the electrode and joining them by brazing or diffusion bonding, it is possible to prevent the reaction between PbTe and the brazing material, insert material or electrode during joining and during use, INDUSTRIAL APPLICABILITY The present invention is extremely useful industrially because a method for joining thermoelectric conversion elements that can improve the joining rate is obtained.
【図１】本発明熱電変換素子の接合方法をろう付接合に
適用した一実施例の断面図である。FIG. 1 is a cross-sectional view of an embodiment in which a method for joining thermoelectric conversion elements according to the present invention is applied to brazing joining.
１ ＰｂＴｅ ２ 電極 ３ 第１層コーティング ４ 第２層コーティング ５ ろう材 1 PbTe 2 Electrode 3 First layer coating 4 Second layer coating 5 Brazing material
Claims (1)
接合する際に、ＰｂＴｅの接合面に予めＰｂＴｅと接合
温度付近で反応性を有さない金属をコーティングし、Ｐ
ｂＴｅと電極との間にろう材又はインサート材を挿入し
てろう付又は拡散接合で接合することを特徴とする熱電
変換素子の接合方法。1. When bonding PbTe, which is a thermoelectric conversion element, and an electrode, a bonding surface of PbTe is coated with a metal having no reactivity with PbTe in the vicinity of the bonding temperature in advance, and P
A method for joining a thermoelectric conversion element, characterized in that a brazing material or an insert material is inserted between bTe and an electrode and the joining is performed by brazing or diffusion bonding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3186817A JPH0555638A (en) | 1991-07-01 | 1991-07-01 | Connecting method for thermoelctric converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3186817A JPH0555638A (en) | 1991-07-01 | 1991-07-01 | Connecting method for thermoelctric converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0555638A true JPH0555638A (en) | 1993-03-05 |
Family
ID=16195119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3186817A Withdrawn JPH0555638A (en) | 1991-07-01 | 1991-07-01 | Connecting method for thermoelctric converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0555638A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100421274C (en) * | 2004-05-28 | 2008-09-24 | 中国科学院上海硅酸盐研究所 | A kind of electrode material of cobalt antimonide-based thermoelectric material and its preparation process |
-
1991
- 1991-07-01 JP JP3186817A patent/JPH0555638A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100421274C (en) * | 2004-05-28 | 2008-09-24 | 中国科学院上海硅酸盐研究所 | A kind of electrode material of cobalt antimonide-based thermoelectric material and its preparation process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19981008 |