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    • 6. 发明申请
    • ALKALINE RESISTANT PHOSPHATE CONVERSION COATINGS AND METHOD OF MAKING
    • 碱性磷酸盐转化涂料及其制备方法
    • WO1984000386A1
    • 1984-02-02
    • PCT/US1982000949
    • 1982-07-12
    • FORD MOTOR COMPANY OF CANADA, LIMITEDFORD-WERK AKTIENGESELLSCHAFTFORD FRANCE S.A.FORD MOTOR COMPANY LIMITEDFORD MOTOR COMPANYZURILLA, Ronald, W.HUFF, John
    • FORD MOTOR COMPANY OF CANADA, LIMITEDFORD-WERK AKTIENGESELLSCHAFTFORD FRANCE S.A.FORD MOTOR COMPANY LIMITEDFORD MOTOR COMPANY
    • C23F07/08
    • C23C22/12C23C22/362
    • A method for increasing the resistance to alkaline dissolution of a phosphate conversion coating on a corrodible metal substrate. The substrate is exposed to the phosphating solution by spraying or dipping to chemically effect a reaction with the substrate. The solution contains 84-94 molar percent of the total metal cations of a first layer-forming divalent metal cation, the metal cation having a hydroxide which has a lower solubility in an alkaline solution than iron or zinc hydroxide and is preferably selected from the group consisting of nickel, cobalt, magnesium and lanthanides, and a second layer-forming metal cation in the form of zinc present in an amount of .2-.6 g/l as a Zn . The molar ratio range of the first and second metal cations is in the range of 5.2:1 to 16:1, and the first metal cation is present in the solution in an amount of at least 1.0 g/l. The deposited coating has a first divalent metal cation present in an amount of at least 15 mole percent of the total divalent cations, and a second divalent cation present in an amount of at least 25 % by weight of the coating; the coating preferably has a uniform weight of less than 1.3 g/m (120 mg/ft ).
    • 一种增加磷酸盐转化涂层在可腐蚀金属基材上的碱性溶解性的方法。 通过喷涂或浸渍将基底暴露于磷化溶液以化学地影响与基底的反应。 溶液含有84-94摩尔%的第一层形成二价金属阳离子的总金属阳离子,该金属阳离子具有氢氧化物,它在碱溶液中的溶解度比铁或氢氧化锌低,优选选自 由镍,钴,镁和镧系元素组成,第二层形成金属阳离子的形式为Zn 2+,其含量为.2.6g / l。 第一和第二金属阳离子的摩尔比范围在5.2:1至16:1的范围内,第一金属阳离子以至少1.0g / l的量存在于溶液中。 沉积的涂层具有以总二价阳离子的至少15摩尔%的量存在的第一二价金属阳离子和以涂层重量计至少25重量%的量存在的第二二价阳离子; 该涂层优选具有小于1.3g / m 2(120mg / ft 2)的均匀重量。