有機酸塩添加有機アルカリ性浴(1-アミノ-2-プロパノール-フッ化物基液)中でのアルミニウムの陽極酸化 Anodizing of Aluminum in Organic Alkaline Baths (1-Amino-2-Propanol-Fluoride Base) Containing Organic Acid Salts

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In this paper, the anodizing of aluminum was investigated using isopropanolamine (1-amino-2-propanol) for comparison with ethanolamine and choline. Studies were conducted to determine the optimum bath compositions for anodizing aluminum in isopropanolamine alkaline baths involving ammonium fluoride and organic acid salts (HCOONH<sub>4</sub>, CH<sub>3</sub>COONH<sub>4</sub>, (NH<sub>4</sub>)<sub>2</sub>C<sub>2</sub>O<sub>4</sub>, (NH<sub>4</sub>)<sub>2</sub>C<sub>4</sub>H<sub>4</sub>O<sub>6</sub>, (NH<sub>4</sub>)<sub>3</sub>C<sub>6</sub>H<sub>5</sub>O<sub>7</sub>, (CH<sub>2</sub>)<sub>4</sub>(COONH<sub>4</sub>)<sub>2</sub>). Uniform films were formed when anodizing in baths containing organic acid salts, but non-uniform films were formed in baths without these additives. The thickest film (about 8μm) was formed in a bath containing ammonium acetate and ammonium tartrate by anodizing for 30min at 20°C with a current density of 1A/dm<sup>2</sup>. Films formed in baths containing ammonium tartrate or tri-ammonium citrate were the hardest (Marten's scratch hardness test, load 50gf, about 19) while films formed in baths containing tri-ammonium citrate or ammonium adipate showed lower corrosion resistance. SEM observation found that films prepared in baths containing monocarboxylic acids salts had a few pores about 25-40nm in diameter in addition to those with diameters of 15-20nm, while these prepared in baths containing other organic acid salts had pores about with diameters of 30-40nm.

収録刊行物

  • 表面技術 = The Journal of the Surface Finishing Society of Japan  

    表面技術 = The Journal of the Surface Finishing Society of Japan 48(1), 76-81, 1997-01-01 

    The Surface Finishing Society of Japan

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各種コード

  • NII論文ID(NAID)
    10002258203
  • NII書誌ID(NCID)
    AN1005202X
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09151869
  • NDL 記事登録ID
    4118800
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-291
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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