亜鉛めっきのホイスカー発生と浴中化学種の関係

• 大河 原薫

  福島県ハイテクプラザ

• 室井 良一

  (株) サンビックス

書誌事項

タイトル別名

• Whisker Growth from Zinc Plating versus Chemical Species in Baths.
• アエン メッキ ノ ホイスカー ハッセイ ト ヨクチュウ カガクシュ ノ カン

抄録

High concentrations of cyanide and alkali in baths had the objective of lowering whisker growth in zinc plating, but the mechanism and suitable bath composition remain to be clarified.<br>We studied chemical species concentrations, taking the ion balance into consideration, and found that the carbon content in zinc plating, and the amount of zinc cyanide complexes and free cyanide ions in baths are related to whisker growth. Zincate ions are related to the electrodeposition rate but not to whisker growth. The ratio of zincate ion to zinc cyanide complexes in the cyanide system we studied, is closer to the work of Hasko and Kunkel indicated in the standard cyanide system [Zn(OH)₄^2-]:[Zn(CN)₄^2-]≅1:1; in the highcyanide system [Zn(OH)₄^2-]:[ZnCN]₄^2-]≅1:2-3) than to the work of Hull and Wernlund indicated (75 to 90% of zinc in the standard cyanide system was present as zincate ion and the remainder as zinc cyanide complexes).<br>This concentration of chemical species can be used as an index of zinc plating baths control instead of ratio M (NaCN/Zn).

収録刊行物

• 表面技術

  表面技術 49 (5), 502-506, 1998

  一般社団法人 表面技術協会

キーワード

• Zinc Plating
• Whisker
• Cyanide Baths
• Chemical Species
• Carbon Content

詳細情報

• CRID: 1390001204114387968
• NII論文ID: 10002109313
• NII書誌ID: AN1005202X
• DOI: 10.4139/sfj.49.502
• COI: 1:CAS:528:DyaK1cXjtFGjtb0%3D
• ISSN: 18843409
• ISSN: 09151869
• ISSN: http://id.crossref.org/issn/09151869
• NDL書誌ID: 4481829
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4481829
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可