化学配方数据库
配方类型: METALS
配方说明: Black Oxide Coating for Aluminum (U.S. Patnet 2,681,873)
配方组成: Hydrochloric Acid/33.6
Sulfuric Acid/10.8
Sodium Alkylaryl Sulfonate/1.5
Water/280.0
Sodium Dichromate/27.1
Potassium Permanganate/27.1
配制方法: Cleaned aluminum is dipped for 30 seconds to 3 minutes in this solution heated at 85 to 190F.

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