Phosphating

Japanese: phosphating

…Film 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 precipitated on the surface to form a film. For undercoating of aluminum, zinc phosphate treatment or mixed treatment with chromate phosphoric acid is used, but technology to improve and utilize the original boehmite AlOOH film of aluminum is also popular. …

From Parkerizing

...Phosphating is a common name for phosphating. It is a chemical conversion treatment method in which metal is treated with an aqueous solution mainly containing phosphoric acid and soluble phosphates, and an insoluble phosphate film is formed on the surface.

*Some terminology explanations that mention "phosphating" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…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。アルミニウムに対する塗装下地にはリン酸亜鉛処理やリン酸クロム酸の混合処理などが利用されるが，アルミニウム本来のベーマイトAlOOH皮膜を改良利用する技術も盛んである。…