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    • 3. 发明授权
    • Process for inhibiting the corrosion of a metal installation in contact
with an acid bath
    • 用于抑制与酸浴接触的金属装置的腐蚀的方法
    • US4402759A
    • 1983-09-06
    • US184052
    • 1980-09-04
    • Daniel Tytgat
    • Daniel Tytgat
    • C23F11/04C23G1/04C23G1/06
    • C23F11/04C23G1/04
    • The invention relates to a process for inhibiting the corrosion of an installation, made of a material chosen from amongst the metals which are less noble than hydrogen, and their alloys, in contact with an acid bath containing an alkylpyridinium chloride.A soluble cyanide complex, which is capable of forming an insoluble compound by reacting with ferric ions in the bath, is added to the bath so as to limit the concentration of the ferric ions in the bath to a maximum of 30 mg/kg. The content of ferric ions in the bath is controlled by means of a potentiometric measurement so as to bring the potential of the bath into the region of a predetermined value.The invention applies in particular to the treatment of baths for cleaning or descaling steel installations.
    • 本发明涉及一种抑制装置腐蚀的方法,该装置由选自贵金属不贵的金属制成的材料及其合金与含有烷基氯化吡啶的酸浴接触。 通过与浴中的铁离子反应形成不溶性化合物的可溶性氰化物配合物被加入到浴中,以将镀液中的铁离子的浓度限制在30mg / kg以下。 通过电位测量来控制浴中的铁离子的含量,以使浴的电位进入预定值的区域。 本发明特别适用于用于清洁或除锈钢装置的浴的处理。