Effect of zincate treatment on adhesion of electroless Ni-P coating onto various aluminum alloys
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- Hino Makoto
- Industrial Technology Research Institute of Okayama Prefecture
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- Murakami Koji
- Industrial Technology Research Institute of Okayama Prefecture
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- Mitooka Yutaka
- Industrial Technology Research Institute of Okayama Prefecture
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- Muraoka Ken
- Industrial Technology Research Institute of Okayama Prefecture
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- Furukawa Ryosuke
- Faculty of Engineering, Okayama University of Science
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- Kanadani Teruto
- Faculty of Engineering, Okayama University of Science
Bibliographic Information
- Other Title
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- 各種アルミニウム合金上への無電解Ni‐Pめっき皮膜の密着性に及ぼすジンケート処理の効果
- 各種アルミニウム合金上への無電解Ni-Pめっき皮膜の密着性に及ぼすジンケート処理の効果
- カクシュ アルミニウム ゴウキンジョウ エノ ムデンカイ Ni P メッキ ヒマク ノ ミッチャクセイ ニ オヨボス ジンケート ショリ ノ コウカ
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Abstract
It is well known that adhesion of electroless Ni–P coating onto aluminum alloy substrate can be remarkably improved by introducing the double zincate treatment as a pretreatment process. This study investigated the effects of alloying elements and zincate treatment on adhesion of electroless Ni–P coating onto various aluminum alloy substrates by using peeling test, FE-SEM and XPS. Surface morphology of zinc deposit from the 1st zincate treatment and its adhesive strength were changed, depending on the alloying element. The zinc deposit from the 2nd zincate treatment became thinly uniform, and the adhesive strength was improved irrespective of the alloying element. By dipping the zinc deposit obtained at the 1st zincate in 5% HNO3 solution, most of the zinc deposit on aluminum substrate was dissolved, but XPS analysis revealed that the existence of zinc, whose condition was metal, at the surface of aluminum alloy substrate after this dipping. This zinc at the surface should be an important factor influencing morphology of zinc deposit at the 2nd zincate treatment, so that zinc deposit became highly uniform and thin. This zinc at the surface can be attributed to the diffusion of zinc and aluminum between the zinc deposit from the 1st zincate and the aluminum alloy substrate.
Journal
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- Journal of Japan Institute of Light Metals
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Journal of Japan Institute of Light Metals 58 (10), 516-521, 2008
The Japan Institute of Light Metals
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Details 詳細情報について
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- CRID
- 1390001206340785408
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- NII Article ID
- 10024758359
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- NII Book ID
- AN00069773
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- COI
- 1:CAS:528:DC%2BD1cXhtlGiurvL
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- ISSN
- 18808018
- 04515994
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- NDL BIB ID
- 9709225
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed