...A polishing solution is a mixture of three ingredients: acid (sulfuric acid, phosphoric acid, hydrofluoric acid, etc.), oxidizing agent (chromic acid, nitric acid, hydrogen peroxide, etc.), and auxiliary agent (to suppress gas generation, to give gloss, etc.), and various recipes are known. Historically, the Kirinsu bath (a mixture of nitric acid, sulfuric acid, and hydrochloric acid used for copper alloys. Later, it was improved by adding urea as an auxiliary agent to suppress the generation of nitric oxide gas) is well known. ... *Some of the terminology that refers to "Kirinsu Bath" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…研磨液は,酸(硫酸,リン酸,フッ酸等),酸化剤(クロム酸,硝酸,過酸化水素等),助剤(ガス発生の抑制,光沢化付与等)の3者を混合したもので,種々の処方が知られている。歴史的には,銅合金に用いられたキリンス浴(硝酸,硫酸,塩酸の混合浴。のちに一酸化窒素ガスの発生を抑える助剤として尿素添加の改良がなされた)が有名である。… ※「キリンス浴」について言及している用語解説の一部を掲載しています。 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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