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    • 2. 发明公开
    • 비발암성 부식 억제 첨가제
    • 非致癌性腐蚀抑制添加剂
    • KR1020020022632A
    • 2002-03-27
    • KR1020010058343
    • 2001-09-20
    • 유나이티드 테크놀로지스 코포레이션
    • 푸트남존윌리엄제오로브스키마크
    • C23F11/00
    • C23F11/187C09D5/084C23F11/185C23F11/188
    • PURPOSE: A corrosion inhibitors is provided which can be used and substituted for hexavalent chromium inhibitors so as to avoid potential health hazards while at the same time provide effective corrosion protection on metal surfaces, particularly, high strength aluminum alloys used in aerospace applications. CONSTITUTION: In a non-carcinogenic corrosion inhibiting additive comprising an anodic corrosion inhibitor and a cathodic corrosion inhibitor, the present invention is characterized in that the anodic corrosion inhibitor is a compound being soluble in alkaline media, while precipitating as a reduced, insoluble oxide under neutral and acidic reducing conditions, that is, existing as an insoluble oxide below -600 mv vs Ag/AgCl at pH 7, and below -300 mv vs Ag/AgCl at pH 2 and the cathodic corrosion inhibitor is a compound being soluble in acidic media, while undergoing a valance change to precipitate as an insoluble oxide under neutral and alkaline and moderately oxidizing conditions, that is, existing as an insoluble oxide above -300 mv vs Ag/AgCl at pH 7, and above -900 mv vs Ag/AgCl at pH 12.
    • 目的:提供腐蚀抑制剂,可用于和替代六价铬抑制剂,以避免潜在的健康危害,同时为金属表面,特别是航空航天应用中使用的高强度铝合金提供有效的防腐蚀保护。 构成:在含有阳极腐蚀抑制剂和阴极腐蚀抑制剂的非致癌腐蚀抑制添加剂中,本发明的特征在于阳极腐蚀抑制剂是可溶于碱性介质的化合物,同时作为还原的不溶性氧化物沉淀 中性和酸性还原条件,即在pH7下存在的低于-600mv的不溶性氧化物相对于Ag / AgCl,和在pH 2下存在于Ag / AgCl以下-300mv以下,阴极腐蚀抑制剂是可溶于酸性的化合物 介质,同时在中性和碱性和中等氧化条件下进行变化以作为不溶性氧化物沉淀,也就是说,作为不溶性氧化物存在于-300mv以上,相对于Ag / AgCl在pH7和-900mv以上,与Ag / AgCl在pH 12。