JPWO2019022188A1 - 錫めっき付銅端子材及び端子並びに電線端末部構造 - Google Patents
錫めっき付銅端子材及び端子並びに電線端末部構造 Download PDFInfo
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- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/60—Electroplating characterised by the structure or texture of the layers
- C25D5/615—Microstructure of the layers, e.g. mixed structure
- C25D5/617—Crystalline layers
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- C25D7/00—Electroplating characterised by the article coated
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- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
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- H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials
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- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
- H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
- H01R4/183—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
- H01R4/184—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion
- H01R4/185—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion combined with a U-shaped insulation-receiving portion
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- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
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Abstract
Description
(試料18,21,22の下地層形成)
・めっき浴組成
スルファミン酸ニッケル:300g/L
塩化ニッケル:5g/L
ホウ酸:30g/L
・浴温:45℃
・電流密度:5A/dm2
(試料1,3〜5,24,25の亜鉛層形成)
・硫酸亜鉛七水和物:250g/L
・硫酸ナトリウム:150g/L
・pH=1.2
・浴温:45℃
・電流密度:5A/dm2
(試料11,14〜22の亜鉛層形成)
・めっき浴組成
硫酸亜鉛七水和物:75g/L
硫酸ニッケル六水和物:180g/L
硫酸ナトリウム:140g/L
・pH=2.0
・浴温:45℃
・電流密度:5A/dm2
(試料2,6の亜鉛層形成)
・めっき浴組成
硫酸錫(II):40g/L
硫酸亜鉛七水和物:5g/L
クエン酸三ナトリウム:65g/L
非イオン性界面活性剤:1g/L
・pH=5.0
・浴温:25℃
・電流密度:3A/dm2
(試料12の亜鉛層形成)
・めっき浴組成
硫酸マンガン一水和物:110g/L
硫酸亜鉛七水和物:50g/L
クエン酸三ナトリウム:250g/L
・pH=5.3
・浴温:30℃
・電流密度:5A/dm2
(試料7の亜鉛層形成)
・めっき浴組成
七モリブデン酸六アンモニウム(VI):1g/L
硫酸亜鉛七水和物:250g/L
クエン酸三ナトリウム:250g/L
・pH=5.3
・浴温:30℃
・電流密度:5A/dm2
(試料1〜25の錫層形成)
・めっき浴組成
メタンスルホン酸錫:200g/L
メタンスルホン酸:100g/L
添加剤
・浴温:35℃
・電流密度:5A/dm2
解析範囲:10.0μm×50.0μm(測定範囲:10.0μm×50.0μm)
測定ステップ:0.1μm
取込時間:11msec/point
加速電圧:15kV
ビーム電流:約3.5nA
WD:15mm
X線源:Standard MgKα 350W
パスエネルギー:187.85eV(Survey)、58.70eV(Narrow)
測定間隔:0.8eV/step(Survey)、0.125eV(Narrow)
試料面に対する光電子取り出し角:45deg
分析エリア:約800μmφ
腐食電流については、直径2mmの露出部分を残して樹脂で被覆した純アルミニウム線と、直径6mmの露出部分を残して樹脂で被覆した試料とを、距離1mmにて各露出部分同士を対向させて、23℃、5質量%の食塩水中に設置し、無抵抗電流計(北斗電工株式会社製 HA1510)を用いて、各試料を150℃で1時間加熱した後と加熱前について、純アルミニウム線と試料との間に流れる電流を測定して、腐食電流とした。
曲げ加工性については、各試料に対して、JIS(日本工業規格)H3110に規定されるW曲げ試験治具を用い、圧延方向に対して直角方向となるように9.8×103Nの荷重で曲げ加工を施した。曲げ加工後の各試料について、実体顕微鏡による曲げ加工部分の観察の結果、明確なクラックが認められなければ「優」(A)、クラックが発生しても基材の銅合金が露出していなければ「良」(B)、発生したクラックにより基材の銅合金が露出していれば「不良」(D)と評価した。
ウイスカ発生状況の評価については、1cm×1cmの矩形平板に切り出した各試料について、温度55℃、相対湿度95%RHで1000時間放置した後、電子顕微鏡により100倍の倍率にて3視野を観察し、最も長いウイスカの長さを測定した。ウイスカの発生が認められなかったものを「優」(A)、発生したウイスカの長さが50μm未満のものを「良」(B)、発生したウイスカの長さが50μm以上100μm未満のものを「可」(C)、発生したウイスカの長さが100μm以上のものを「不良」(D)とした。
接触抵抗については、平板状の各試料のめっき表面について、日本伸銅協会の規定する「表面接触電気抵抗の測定方法」JCBA−T323に準拠し、4端子接触抵抗試験機(山崎精機研究所製:CRS−113−AU)を用い、摺動式(1mm)で荷重1N時の接触抵抗を測定した。
上記JCBA−T323に準拠し、山崎精機研究所製の微摺動摩耗試験機を用いて、R=1mmの凸加工を施した試料を平板状の試料に対して荷重1Nにて押しつけ、摺動速度1Hz、移動距離50μmで繰り返し往復摺動させ、電流値10mA、解放電圧20mVにて摺動中の接触抵抗を測定し、接触抵抗が10mΩに達した往復サイクル数にて評価した。往復サイクル数50回未満で10mΩに達したものを「不良」(D)、50回以上100回未満のものを「可」(C)、100回以上150回未満ものを「良」(B)、150回以上のものを「優」(A)とした。
2 基材
3 下地層
4 亜鉛層
5 錫層
6 金属亜鉛層
10 端子
11 接続部
11a バネ片部
12 電線
12a 心線
12b 被覆部
13 心線かしめ部
14 被覆かしめ部
15 オス端子
21 キャリア部
22 端子用部材
23 連結部
Claims (10)
- 銅又は銅合金からなる基材と、
前記基材の上に形成され、亜鉛合金からなる亜鉛層と、
前記亜鉛層の上に形成され、錫合金からなる錫層と、
を有し、
前記亜鉛層及び錫層全体における単位面積あたりの錫量が0.30mg/cm2以上7.00mg/cm2以下、単位面積あたりの亜鉛量が0.07mg/cm2以上2.00mg/cm2以下であり、
前記錫層中の表面近傍における亜鉛の含有率は0.2質量%以上、10.0質量%以下であり、
前記錫層の全結晶粒界の長さに対して小傾角粒界が占める長さの比率が2%以上30%以下である
ことを特徴とする錫めっき付銅端子材。 - 腐食電位が銀塩化銀電極に対して−500mV以下−900mV以上であることを特徴とする請求項1に記載の錫めっき付銅端子材。
- 前記錫層又は前記亜鉛層の少なくともいずれかが、添加元素としてニッケル、鉄、マンガン、モリブデン、コバルト、カドミウム、鉛のいずれかを1種以上含み、
前記亜鉛層および前記錫層全体における単位面積あたりの前記添加元素量は0.01mg/cm2以上0.30mg/cm2以下であることを特徴とする請求項1又は2に記載の錫めっき付銅端子材。 - 前記錫層の平均結晶粒径が0.5μm以上8.0μm以下であることを特徴とする請求項1から3のいずれか一項に記載の錫めっき付銅端子材。
- 単位面積あたりの前記亜鉛量は、単位面積あたり前記添加元素量の1倍以上10倍以下であることを特徴とする請求項1から4のいずれか一項に記載の錫めっき付銅端子材。
- 前記錫層の上にさらに、亜鉛濃度が5at%以上40at%以下で厚みがSiO2換算で1nm以上10nm以下である金属亜鉛層を有することを特徴とする請求項1から5のいずれか一項に記載の錫めっき付銅端子材。
- 前記基材と前記亜鉛層との間に、ニッケル又はニッケル合金からなり、厚さが0.1μm以上5μm以下、ニッケル含有率が80質量%以上である下地層を有することを特徴とする請求項1から6のいずれか一項に記載の錫めっき付銅端子材。
- 帯板状のキャリア部と、
前記キャリア部の長さ方向に間隔をおいて配置され、前記キャリア部に連結された複数の端子用部材と
を有することを特徴とする請求項1から7のいずれか一項に記載の錫めっき付銅端子材。 - 請求項1から7のいずれか一項に記載の錫めっき付銅端子材からなることを特徴とする端子。
- 請求項9記載の端子がアルミニウム製又はアルミニウム合金製の導線を有する電線に圧着されてなることを特徴とする電線端末部構造。
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JP2020145071A (ja) * | 2019-03-06 | 2020-09-10 | 株式会社シンテック | 電気的接触端子 |
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JP2011219822A (ja) * | 2010-04-09 | 2011-11-04 | Mitsubishi Shindoh Co Ltd | 導電部材及びその製造方法 |
JP2016169439A (ja) * | 2015-03-13 | 2016-09-23 | 三菱マテリアル株式会社 | 錫めっき付銅端子材及びその製造方法並びに電線端末部構造 |
WO2017090638A1 (ja) * | 2015-11-27 | 2017-06-01 | 三菱マテリアル株式会社 | 錫めっき付銅端子材及び端子並びに電線端末部構造 |
JP2017110290A (ja) * | 2015-12-15 | 2017-06-22 | 三菱マテリアル株式会社 | 錫めっき付き銅端子材の製造方法 |
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