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    • 3. 发明授权
    • 합금화용융아연도금강판용 코팅 조성물, 이를 이용한피막형성방법 및 이에 따라 형성된 피막을 갖는 강판
    • 镀锌钢板的涂料组合物,形成涂层的方法和其形成的涂层的钢板
    • KR100782720B1
    • 2007-12-05
    • KR1020060135682
    • 2006-12-27
    • 주식회사 포스코
    • 김영근박하선이상민
    • C23C22/03C23C22/07
    • Coating composition for a galvannealed steel sheet, a method for forming a coating layer and a steel sheet having the coating layer are provided to form a phosphate coating having good adhesion and lubrication performance on a surface of a GA steel plate. Coating composition for a galvannealed steel sheet includes a zinc oxide. When 10ml of the coating composition is neutralized by 0.1N NaOH, an amount of NaOH consumed by neutralization titration is 0.5ml or less. When content of zinc oxide is 3 to 3.5wt%, 0.5ml or less of the coating composition 10ml can be neutralization-titrated by 0.1N NaOH. More specifically, zinc oxide can be added such that when the coating composition 10ml is neutralization-titrated by 0.1N NaOH, an amount of NaOH consumed by neutralization titration is 0.5ml or less, preferably, 0.3 to 0.5ml.
    • 提供合金化热浸镀锌钢板的涂料组合物,涂层形成方法和具有涂层的钢板,以形成在GA钢板表面上具有良好粘合性和润滑性能的磷酸盐涂层。 合金化热浸镀锌钢板的涂料组合物包括氧化锌。 当10ml的涂料组合物被0.1N NaOH中和时,通过中和滴定消耗的NaOH的量为0.5ml或更少。 当氧化锌的含量为3〜3.5重量%时,可以用0.1N NaOH中和滴定0.5ml以下的涂料组合物10ml。 更具体地,可以添加氧化锌,使得当涂料组合物10ml被0.1N NaOH中和滴定时,通过中和滴定消耗的NaOH的量为0.5ml以下,优选为0.3〜0.5ml。