Anodized Aluminum

Japanese: アルマイト
Anodized Aluminum
A surface treatment method in which an aluminum product is electrolyzed in an oxalic acid solution using the anode, forming an oxide film on the surface, or the product thereof. It was developed by the RIKEN in the 1920s, and commercialized by a company under the RIKEN umbrella in 1927. It increases the corrosion resistance of aluminum and also has an aesthetic effect, so it is widely used on aluminum utensils such as pots, kettles, and lunch boxes. Treatment methods using chromic acid and sulfuric acid are also used.

Source : Heibonsha Encyclopedia About MyPedia Information

Japanese:
アルミニウム製品を陽極としシュウ酸溶液中で電解,表面に酸化被膜を生成させる表面処理法,またはその製品。1920年代に理化学研究所が開発,1927年には理研傘下の会社で製品化された。アルミニウムの耐食性を増し,美的効果もあるのでなべ,釜,弁当箱などアルミニウム器物に多用。クロム酸,硫酸を用いて処理する方法も行われる。

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