Chemical treatment - Chemical treatment
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A method of depositing a nonmetallic conversion coating on a metal surface by chemical or electrochemical treatment. Coating compounds include phosphates, chromates, basic salts, oxides, and sulfides, and are used for undercoating, lubrication for plastic processing, improving corrosion resistance, and chemical coloring of surfaces. Phosphating of steel, commonly known as Parkerizing or Bonderizing under registered trademarks, is a treatment method in which minute crystals of zinc phosphate or iron phosphate are deposited on the surface to form a coating. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
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化学的または電気化学的処理により，金属表面に非金属の皮膜conversion coatingを沈積させる処理法をいう。皮膜化合物としてはリン酸塩，クロム酸塩，塩基性塩，酸化物，硫化物などがあり，塗装の下地処理，塑性加工のための潤滑，耐食性の向上，表面の化学着色などに利用される。鉄鋼のリン酸塩処理phosphatingは，登録商標としてはパーカライジングとかボンデ処理と通称され，リン酸亜鉛，リン酸鉄の微小結晶をその表面に析出させ皮膜とする処理法である。
出典 株式会社平凡社世界大百科事典 第２版について 情報 |
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