Metal joining between two pieces of aluminum rods by precision electroforming at room temperature and evaluation of their adhesion strength.

在室温下通过精密电铸实现两根铝棒之间的金属连接并评估其粘合强度。

• 批准号: 14550705
• 负责人: TSURU Yutaka
• 金额: $ 1.34万
• 依托单位: Kyushu Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14550705/
• 关键词: Precision Electroforming; Zinc Electroplating; Nickel Electroplating; Aluminum; Metal Joining; Levering; Peeling Strength; Adhesion; 均一電着生; 引張り試験

We made two pieces of aluminum rods (A1070BD-H14) join by precision electroforming at room temperature. The electroforming of zinc or nickel on the contact boundary regions of their aluminum rods was performed after previously mechanical attaching by a bolt. After electroforming and subsequent detaching of the bolt, the adhesion strength between the aluminum and electroplating films was evaluated by tension tests. The oxide film formed spontaneously on aluminum surface caused weak adhesion between electroplating film and aluminum substrate. Therefore, after mechanically abrasion by commercial emery grid paper, for the improvement of their adhesion strength we applied a chemical Al/Zn substitution process using zincates solution to prevent formation of the oxide film. The composition of the zincates solution was 5.0 g/dm^3 ZnO - 120 g/dm^3 NaOH - 2.0 g/dm^3 FeCl_3・6H_2O -50 g/dm^3C_4H_4NaKO_6・4H_2O - 1.0 g/dm^3NaNO_3.As a result, it confirmed that electroforming was an excellent method for joining aluminum metals each other at room temperature. Beside of the chemical surface finishing by the zincates treatment, the mechanical abrasion process also influenced greatly on the adhesion strength between the aluminum and electroplating metal films of zinc or nickel. For example, the strongest adhesion strength was carried out in the following chemical surface finishing process, first zincates process for 90 seconds and then etching process by 36 vol. % HMO_3 for 60 seconds and succeeding 2^<nd> zincates process for 30 seconds. On the other hand, we found that the mechanical abrasion by commercial emery grid paper of #1000 before a similar zincates process always improved greatly their adhesion strengths in tension tests.

我们在室温下通过精密电铸将两个铝棒（A1070 BD-H14）连接起来。在预先通过螺栓机械连接之后，在其铝杆的接触边界区域上进行锌或镍的电铸。在电铸和随后的螺栓分离之后，通过拉伸试验评估铝和电镀膜之间的粘附强度。铝表面自发形成的氧化膜导致电镀膜与铝基体之间的附着力较弱。因此，在通过商业金刚砂网格纸的机械磨损后，为了改善它们的粘附强度，我们应用了使用锌酸盐溶液的化学Al/Zn置换过程以防止氧化膜的形成。锌酸盐溶液的组成为5.0 g/dm^3 ZnO - 120 g/dm^3 NaOH - 2.0 g/dm^3 FeCl_3·6H_2O-50 g/dm^3C_4H_4NaKO_6·4H_2O - 1.0 g/dm^3NaNO_3。除了锌酸盐处理的化学表面处理外，机械磨损过程也对铝与锌或镍电镀金属膜之间的结合强度有很大影响。例如，最强的粘附强度在以下化学表面整理过程中进行，首先锌酸盐处理90秒，然后用36体积%的HMO_3蚀刻处理60秒，然后用<nd>20体积%的锌酸盐处理30秒。另一方面，我们发现，在类似的锌酸盐工艺之前，用#1000的商用金刚砂网格纸进行机械磨损总是大大提高它们在拉伸试验中的粘合强度。

项目成果

Effects of Surface Finishing of Aluminum Plates on the Adhesion Strength between the Aluminum Substrate and Electroplated Film by Peeling Test

通过剥离试验研究铝板表面处理对铝基板与电镀膜附着力的影响

• 发表时间: 2005
• 期刊: Proceedings of 111^<th> Conference of the Surface Finishing Society of Japan 16B-8
• 作者: Kouzou Okamoto;Yutaka Tsuru
• 通讯作者: Yutaka Tsuru

岡本孝三, 松尾仁志, 津留 豊: "ニッケルめっきの密着強度に及ぼすアルミニウム表面処理の影響"表面技術協会第109回講演大会講演要旨集. 109. 196-196 (2004)

Kozo Okamoto、Hitoshi Matsuo、Yutaka Tsuru：“铝表面处理对镀镍附着强度的影响”表面技术协会第 109 届会议摘要 109. 196-196 (2004)。

ニッケルめっき膜の密着強度に及ぼすアルミニウム表面処理の影響

铝表面处理对镀镍膜结合强度的影响

• 发表时间: 2004
• 期刊: 表面技術協会第109回講演大会要旨集
• 作者: 岡本孝三;松尾仁志;津留豊
• 通讯作者: 津留豊

ニッケルめっき膜の密着強度に及ぼす膜物性とアルミニウム素地表面処理の影響

镀膜性能及铝基体表面处理对镀镍膜结合强度的影响

• 发表时间: 2004
• 期刊: 表面技術協会第110回講演大会要旨集
• 作者: 津留豊;小柳仁;岡本孝三
• 通讯作者: 岡本孝三

Effects of Surface Finishing of Aluminum Rods on the Adhesion Strength between the Aluminum Substrate and Electroplated Nickel Film by Tension Test

拉力试验研究铝棒表面处理对铝基体与电镀镍膜结合强度的影响

• 发表时间: 2004
• 期刊: Proceedings of 110^<th> Conference of the Surface Finishing Society of Japan 13A-4
• 作者: Yutaka Tsuru;Hitoshi Koyanagi;Kouzou Okamoto
• 通讯作者: Kouzou Okamoto