A surface treatment method for steel established by American CW Parker in 1915. Iron with a cleaned surface is immersed in a solution containing acidic zinc phosphate, phosphoric acid, and an oxidizing agent at room temperature to just over 100°C, forming an insoluble zinc or zinc-iron tertiary phosphate film on the iron surface. During the wire drawing process, the wire is passed through a phosphate bath to form a phosphate coating, which is used as a lubricant for processing and also helps prevent oxidation. Currently, it is indispensable as a paint base for painted steel sheets and plated steel sheets, and in Japan, 15 million tons of steel are phosphate treated each year. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
1915年にアメリカ人 C. W.パーカーが確立した鉄鋼の表面処理方法。表面を清浄にした鉄を,常温から 100℃強までの酸性リン酸亜鉛,リン酸および酸化剤などを含む溶液に浸漬し,鉄表面に不溶性の亜鉛または亜鉛-鉄の第三リン酸塩被膜を形成させる。線引きの工程で,線をリン酸塩浴にくぐらせてリン酸塩被膜をつけ,加工の潤滑剤として利用すると同時に酸化防止に役立てる。現在では,塗装を施される鋼板,メッキ鋼板の塗装下地として不可欠で,日本でも毎年 1500万tの鋼材がリン酸塩処理される。
出典 ブリタニカ国際大百科事典 小項目事典ブリタニカ国際大百科事典 小項目事典について 情報 |
...Although it is art based on esoteric Buddhism,...
…If a woman commits a crime that is punishable by...
…Since ancient times, ships have approached the F...
…It is one of the fish that grows in succession, ...
Also called "yoran." In the olden days, ...
…Interestingly, a similar argument to operational...
A method of measuring the distance between two poi...
A collection of statutes and other documents from ...
The illegal and secret killing of a politically i...
...He returned to Japan in the same year and, as ...
Founded in 1879 by Shibusawa Eiichi and jointly fu...
After the Industrial Revolution, capitalist produ...
Legally, there is no independent right called man...
...The first Tirthankara was called Rishabha (col...
1890‐1959 Canadian politician. He left the Conserv...