JP2986013B2 - Metal cover material for crystal unit - Google Patents
Metal cover material for crystal unitInfo
- Publication number
- JP2986013B2 JP2986013B2 JP7294816A JP29481695A JP2986013B2 JP 2986013 B2 JP2986013 B2 JP 2986013B2 JP 7294816 A JP7294816 A JP 7294816A JP 29481695 A JP29481695 A JP 29481695A JP 2986013 B2 JP2986013 B2 JP 2986013B2
- Authority
- JP
- Japan
- Prior art keywords
- metal cover
- cover material
- solder
- crystal unit
- crystal
- 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.)
- Expired - Fee Related
Links
- 239000000463 material Substances 0.000 title claims description 32
- 239000002184 metal Substances 0.000 title claims description 26
- 229910052751 metal Inorganic materials 0.000 title claims description 26
- 239000013078 crystal Substances 0.000 title description 21
- 239000010453 quartz Substances 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims 1
- 229910000679 solder Inorganic materials 0.000 description 27
- 230000004907 flux Effects 0.000 description 9
- 230000007797 corrosion Effects 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 8
- 229910000906 Bronze Inorganic materials 0.000 description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 7
- 239000010974 bronze Substances 0.000 description 7
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 238000005304 joining Methods 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 229910018104 Ni-P Inorganic materials 0.000 description 3
- 229910018536 Ni—P Inorganic materials 0.000 description 3
- 238000005097 cold rolling Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 229910000833 kovar Inorganic materials 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000002542 deteriorative effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 241000723554 Pontia occidentalis Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- -1 high strength Chemical compound 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- MOFOBJHOKRNACT-UHFFFAOYSA-N nickel silver Chemical compound [Ni].[Ag] MOFOBJHOKRNACT-UHFFFAOYSA-N 0.000 description 1
- 239000010956 nickel silver Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は水晶振動子の金属カ
バー材料に関し、さらに詳しくは、絞り加工性に優れた
封止型の水晶振動子金属カバー材料に関する。水晶振動
子の金属カバー材料は、水晶発振機や水晶フィルターの
金属カバー材料にも適用できる。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal cover material for a crystal resonator, and more particularly, to a metal cover material of a sealed type crystal resonator having excellent drawability. The metal cover material of the crystal unit can be applied to a metal cover material of a crystal oscillator and a crystal filter.
【０００２】[0002]
【従来の技術】水晶振動子の金属カバーは保持器と共
に、水晶片、電極及びそれらの支持系体を内部に収容し
て、これを機械的及び耐候的に外部条件から保護する容
器である。封止型の水晶振動子金属カバー材料として
は、主にＣｕ−１８％Ｎｉ−１８％Ｚｎ等の洋白が裸材
で使用され、保持器の金属ベース材としては、ガラス絶
縁ベースとの封着性の点からＦｅ−２９％Ｎｉ−１７％
Ｃｏ（以下、コバールという）又は鉄が使用されてい
る。そして、金属カバーと金属ベース材の接合には抵抗
溶接又ははんだ接合のいずれかが採用され、抵抗溶接で
接合する場合上記金属ベース材にはＮｉ又はＮｉ−Ｐ合
金めっきが施され、はんだ接合の場合Ｓｎめっきが施さ
れたうえで接合されている。2. Description of the Related Art A metal cover of a crystal unit is a container which accommodates a crystal piece, an electrode, and a support system thereof together with a retainer and protects it mechanically and weatherably from external conditions. As a metal cover material of a sealing type quartz resonator, nickel-white, such as Cu-18% Ni-18% Zn, is mainly used as a bare material, and a metal base material of the retainer is a glass insulating base. Fe-29% Ni-17% from the point of adhesion
Co (hereinafter referred to as Kovar) or iron is used. Either resistance welding or solder joining is adopted for joining the metal cover and the metal base material. When joining by resistance welding, the metal base material is plated with Ni or Ni-P alloy, and solder joining is performed. In this case, they are joined after being subjected to Sn plating.
【０００３】[0003]
【発明が解決しようとする課題】水晶振動子の金属カバ
ー材料は、強度、絞り加工性、耐食性、金属ベース材と
の抵抗溶接性、はんだ濡れ性およびはんだ密着性などの
多くの特性に優れていなければならない。ところが、従
来水晶振動子の金属カバー材料として使用されている洋
白は、脱亜鉛腐食を起こすという問題があり、また、所
定のはんだ濡れ性を得るためにはハロゲンを含んだ強活
性のフラックスを使用する必要があるという問題があ
る。地球環境保全の面からこのような強活性のフラック
スは望ましくなく、次第に使用できない状況になってい
る。The metal cover material of the crystal unit is excellent in many properties such as strength, drawability, corrosion resistance, resistance weldability to a metal base material, solder wettability and solder adhesion. There must be. However, nickel silver used conventionally as a metal cover material for quartz resonators has the problem of causing dezincification corrosion, and in order to obtain a predetermined solder wettability, a strong active flux containing halogen must be used. There is a problem that needs to be used. From the viewpoint of global environmental protection, such a strongly active flux is not desirable and gradually becomes unusable.
【０００４】一方、りん青銅は高強度、優れた絞り性、
Ｎｉ又はＮｉ−Ｐ合金めっきしたコバールあるいは同め
っきした鉄等の金属ベース材との優れた抵抗溶接性、良
好なはんだ濡れ性を有している。しかし、長期使用での
はんだ密着性が悪いため、水晶振動子、水晶発振器及び
水晶フィルターの金属カバー材料として用いることがで
きなかった。本発明は、りん青銅のもつ前述の長所を劣
化させることなく、はんだ密着性を向上した金属カバー
材料を提供することを目的とする。On the other hand, phosphor bronze has high strength, excellent drawability,
It has excellent resistance weldability and good solder wettability with a metal base material such as Kovar plated with Ni or Ni-P alloy or iron plated with the same. However, since the solder adhesion after long-term use is poor, it cannot be used as a metal cover material for a crystal resonator, a crystal oscillator, and a crystal filter. An object of the present invention is to provide a metal cover material having improved solder adhesion without deteriorating the aforementioned advantages of phosphor bronze.
【０００５】[0005]
【課題を解決するための手段】本発明に係る水晶振動子
の金属カバー材料は、Ｓｎ：７．０〜９．０％、Ｚｎ：
０．１〜５．０％、Ｐ：０．０３〜０．３５％を含有
し、残部実質的にＣｕからなる。本発明の水晶振動子の
金属カバー材料は、水晶振動子、水晶発振器及び水晶フ
ィルターの金属カバー材料として使用される。本発明
は、りん青銅にＺｎを添加することによって、りん青銅
のもつ長所を劣化させることなく、はんだ密着性を向上
させたものであり、本発明合金における各添加元素の含
有量限定理由は次の通りである。According to the present invention, the metal cover material of the crystal unit according to the present invention is Sn: 7.0-9.0%, Zn:
0.1 to 5.0%, P: 0.03 to 0.35%, and the balance substantially consists of Cu. The metal cover material of the crystal unit of the present invention is used as a metal cover material of a crystal unit, a crystal oscillator, and a crystal filter. The present invention improves the solder adhesion without deteriorating the advantages of phosphor bronze by adding Zn to phosphor bronze, and the reasons for limiting the content of each additive element in the alloy of the present invention are as follows. It is as follows.
【０００６】Ｓｎの含有量限定について 水晶振動子のカバー材料とベース材料の接合は、抵抗溶
接、はんだ接合又はコールドウエルドのいずれかの方法
でなされている。抵抗溶接の場合、被溶接材料の導電率
が共に低く接合界面の酸化が少ないほど接合が容易で接
合部の信頼性が向上でき、装置の電源出力が小さくかつ
投入熱量が小さくできる。Ｓｎの含有量が７．０％未満
の場合、導電率が１５％ＩＡＣＳ以上となり、ベース材
との抵抗溶接の際多くの熱量を要し、かつ接合部の信頼
性が低下する。しかし、９．０％を超えて添加すると、
冷間加工性が劣化し材料の製造が難しくなる。従って、
Ｓｎの含有量は７．０〜９．０％とする。[0006] Regarding the limitation of the Sn content [0006] The cover material and the base material of the crystal unit are joined by any of resistance welding, soldering, and cold welding. In the case of resistance welding, the lower the conductivity of the material to be welded and the lower the oxidation of the bonding interface, the easier the bonding, the higher the reliability of the bonding portion, the lower the power output of the device, and the smaller the amount of heat input. If the Sn content is less than 7.0%, the conductivity becomes 15% IACS or more, a large amount of heat is required for resistance welding with the base material, and the reliability of the joint decreases. However, if more than 9.0% is added,
The cold workability deteriorates and the production of the material becomes difficult. Therefore,
The content of Sn is set to 7.0 to 9.0%.
【０００７】Ｐの含有量限定について Ｐは溶湯の脱酸を完全に行い、健全な鋳塊を得るための
脱酸剤であり、０．０３％未満の含有量ではＺｎを０．
１％以上添加しても脱酸不足となり、一方、０．３５％
を超えるとはんだ濡れ性が低下する。従って、Ｐの含有
量は、０．０３〜０．３５％とする。 Regarding the limitation of the P content P is a deoxidizing agent for completely deoxidizing the molten metal and obtaining a sound ingot.
Addition of 1% or more results in insufficient deoxidation, while 0.35%
If it exceeds 50, the solder wettability will decrease. Therefore, the content of P is set to 0.03 to 0.35%.
【０００８】Ｚｎの含有量限定について Ｚｎの添加量が０．１％未満でははんだ密着性を向上さ
せる効果が少なく、５．０％を超えると脱亜鉛腐食を生
じやすくなる。従って、Ｚｎの含有量は０．１〜５．０
％とする。 Regarding the limitation of the Zn content, when the amount of Zn added is less than 0.1%, the effect of improving the solder adhesion is small, and when it exceeds 5.0%, dezincification corrosion tends to occur. Therefore, the content of Zn is 0.1 to 5.0.
%.
【０００９】[0009]
【実施例】次に本発明に係る水晶振動子金属カバー材料
の実施例を説明する。表１に示す含有成分および成分割
合の銅合金を厚さ５０ｍｍに鋳造し、得られた鋳塊の両
面を厚さ４５ｍｍまで面削した後、冷間圧延および焼鈍
処理を繰り返した。最終加工率を３０％とし厚さ０．２
５ｍｍまで冷間加工後、４５０℃の温度で２時間の最終
焼鈍を行って結晶粒度２０μｍの試料を調整した。な
お、比較例Ｎｏ．８はりん青銅、Ｎｏ．１０は洋白であ
る。Next, embodiments of the metal cover material of the crystal unit according to the present invention will be described. A copper alloy having the components and component ratios shown in Table 1 was cast to a thickness of 50 mm, and both surfaces of the obtained ingot were chamfered to a thickness of 45 mm, and then cold rolling and annealing were repeated. Final processing rate is 30% and thickness is 0.2
After cold working to 5 mm, a final annealing was performed at a temperature of 450 ° C. for 2 hours to prepare a sample having a crystal grain size of 20 μm. In addition, the comparative example No. No. 8 is phosphor bronze; 10 is western white.
【００１０】[0010]
【表１】 [Table 1]
【００１１】本発明に係る水晶振動子金属カバー材料の
Ｎｏ．１〜３及び比較例４〜１０のそれぞれにつき、圧
延方向の引張強さと伸び、硬さ、及び導電率を表２に記
載した。また、下記の要領ではんだ濡れ性とはんだ密着
性及び耐食性の評価試験を行い、その評価結果を表２に
記載した。但し、Ｎｏ．５、６については冷間圧延中に
割れが発生したため各試験を行っていない。Ｎｏ．５は
Ｓｎ含有量が過剰であるため、Ｎｏ．６はＰの添加が少
なく脱酸不足のため冷間圧延中に割れが発生したもので
ある。[0011] In the crystal resonator metal cover material according to the present invention, Table 2 shows the tensile strength and elongation in the rolling direction, elongation, hardness, and electrical conductivity of each of Comparative Examples 1 to 3 and Comparative Examples 4 to 10. In addition, evaluation tests for solder wettability, solder adhesion, and corrosion resistance were performed in the following manner, and the evaluation results are shown in Table 2. However, no. Tests 5 and 6 were not performed because cracks occurred during cold rolling. No. No. 5 has an excessive Sn content. In No. 6, cracking occurred during cold rolling due to a small amount of P added and insufficient deoxidation.
【００１２】[0012]
【表２】 [Table 2]
【００１３】はんだ濡れ性試験では、２３０℃の６０Ｓ
ｎ／４０Ｐｂの溶融はんだ槽に予め種々のフラックスに
浸した試験片を５秒間浸漬した後引出し、濡れ評価にお
いて合格できるフラックスを選定した。表２において、
弱活性と記載されたものは弱活性のフラックスでもはん
だ濡れ性が合格したもの、強活性と記載されたものは強
活性のフラックスを使用して初めてはんだ濡れ性が合格
したものを意味する。はんだ密着性試験では、前述の選
定フラックスを用いてはんだ付けした後、１５０℃で最
大１０００時間加熱し、これを２ｍｍＲで１８０°曲げ
した後平板に戻し、はんだの剥離の有無を調査した。１
０００時間加熱後の試験片で剥離がなかったものを合格
と評価し、１０００時間未満の加熱で剥離が生じたもの
を不合格と評価した。耐食性評価試験では、ＪＩＳＺ２
３７１に準じて塩水噴霧試験を行った。５％塩水をノズ
ルにて噴霧し、雰囲気の温度を３５℃とした。４８時間
塩水噴霧後、試験片の表面を観察した。そのほか、エリ
クセン絞り試験機により絞り加工試験を行ったが、板材
に加工できたものはいずれも絞り加工性は良好であっ
た。In the solder wettability test, 60 ° C. at 230 ° C.
Test pieces preliminarily immersed in various fluxes in an n / 40 Pb molten solder bath were immersed for 5 seconds, then pulled out, and a flux that could pass the wettability evaluation was selected. In Table 2,
The weak activity means that the solder wettability has passed even with a weak activity flux, and the strong activity means that the solder wettability has passed for the first time using a strong activity flux. In the solder adhesion test, after soldering using the above-mentioned selected flux, the solder was heated at 150 ° C. for a maximum of 1000 hours, bent at 180 ° at 2 mmR, returned to a flat plate, and examined for the presence or absence of peeling of the solder. 1
A test piece that did not peel off after heating for 000 hours was evaluated as a pass, and a test piece that peeled off for less than 1000 hours was evaluated as a reject. In the corrosion resistance evaluation test, JISZ2
A salt spray test was performed according to 371. 5% salt water was sprayed with a nozzle, and the temperature of the atmosphere was set to 35 ° C. After 48 hours of salt spray, the surface of the test piece was observed. In addition, a drawing test was carried out with an Erichsen drawing tester, and all of the materials that could be processed into plate materials had good drawing workability.
【００１４】表２に示すように、比較例Ｎｏ．４は、Ｓ
ｎ含有量が低いため導電率が高く、抵抗溶接性が低下し
た（チリの発生及び電極との溶着発生）。Ｎｏ．７はＰ
の含有量が多いため、はんだ濡れ性評価において強活性
のフラックスを必要とした。また、Ｎｏ．８はりん青銅
であり、Ｚｎ添加量が少ないため、はんだ密着性試験に
おいて２５０時間加熱後の試験片にもはんだ剥離を生じ
た。Ｎｏ．９はＺｎ添加量が過剰であるため脱亜鉛腐食
が生じた。Ｎｏ．１０は洋白であり、はんだ濡れ性評価
において強活性のフラックスを用いなければならず、塩
水噴霧試験において脱亜鉛腐食を生じた。As shown in Table 2, Comparative Example No. 4 is S
Since the n content was low, the conductivity was high, and the resistance weldability was reduced (the generation of dust and the adhesion to the electrode). No. 7 is P
, A strong active flux was required in the evaluation of solder wettability. In addition, No. 8 is a phosphor bronze, and the amount of Zn added is small, so that in the solder adhesion test, the test piece after heating for 250 hours also peeled off the solder. No. In No. 9, dezincification corrosion occurred due to an excessive amount of Zn added. No. No. 10 was nickel white, and a flux having high activity had to be used in the evaluation of solder wettability, and dezincification corrosion occurred in a salt spray test.
【００１５】一方、本発明に係る水晶振動子金属カバー
材料であるＮｏ．１〜３は、はんだ濡れ性、はんだ密着
性及び脱亜鉛腐食の全てに優れ、機械的性質も優れてい
る。また、導電率が低いため比較例の洋白と同様に抵抗
溶接性も良好であった。On the other hand, the quartz resonator metal cover material No. 1 according to the present invention was used. Nos. 1 to 3 are excellent in all of solder wettability, solder adhesion and dezincification corrosion, and also excellent in mechanical properties. Further, since the conductivity was low, the resistance weldability was also good as in the comparative example.
【００１６】[0016]
【発明の効果】本発明に係る水晶振動子金属カバー材料
は、りん青銅の長所である高強度、優れた絞り加工性、
Ｎｉ又はＮｉ−Ｐ合金めっきしたコバール、同めっきし
た鉄等のベース材料との優れた抵抗溶接性を有し、かつ
優れたはんだ密着性を有している。The metal cover material of the quartz resonator according to the present invention has the advantages of phosphor bronze, such as high strength, excellent drawability,
It has excellent resistance weldability to base materials such as Kovar plated with Ni or Ni-P alloy and iron plated with Ni, and has excellent solder adhesion.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平１−165734（ＪＰ，Ａ) 特開 昭61−127841（ＪＰ，Ａ) 特開 平４−56755（ＪＰ，Ａ) 特公 昭63−11417（ＪＰ，Ｂ２) (58)調査した分野(Int.Cl.6，ＤＢ名) C22C 9/00 - 9/10 H03H 9/02 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-165734 (JP, A) JP-A-61-127841 (JP, A) JP-A-4-56755 (JP, A) 11417 (JP, B2) (58) Fields investigated (Int. Cl. 6 , DB name) C22C 9/00-9/10 H03H 9/02
Claims (1)
同じ）、Ｚｎ：０．１〜５．０％、Ｐ：０．０３〜０．
３５％を含有し、残部実質的にＣｕからなることを特徴
とする水晶振動子、水晶発振機及び水晶フィルターの金
属カバー材料。1. Sn: 7.0 to 9.0% (% by weight, the same applies hereinafter), Zn: 0.1 to 5.0%, P: 0.03 to 0.
A metal cover material for a quartz resonator, a quartz oscillator, and a quartz filter, characterized by containing 35% and the balance substantially consisting of Cu.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7294816A JP2986013B2 (en) | 1995-10-17 | 1995-10-17 | Metal cover material for crystal unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7294816A JP2986013B2 (en) | 1995-10-17 | 1995-10-17 | Metal cover material for crystal unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09111377A JPH09111377A (en) | 1997-04-28 |
| JP2986013B2 true JP2986013B2 (en) | 1999-12-06 |
Family
ID=17812632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7294816A Expired - Fee Related JP2986013B2 (en) | 1995-10-17 | 1995-10-17 | Metal cover material for crystal unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2986013B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100780511B1 (en) * | 2006-11-22 | 2007-11-30 | 주식회사 신창전기 | Car airbag switch device |
-
1995
- 1995-10-17 JP JP7294816A patent/JP2986013B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09111377A (en) | 1997-04-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |