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    VERFAHREN ZUR SELEKTIVEN PHOSPHATIERUNG EINER VERBUNDMETALLKONSTRUKTION
    5.
    发明公开
    VERFAHREN ZUR SELEKTIVEN PHOSPHATIERUNG EINER VERBUNDMETALLKONSTRUKTION 有权
    过程中选择性磷化复合金属建筑

    公开(公告)号：EP2588646A1

    公开(公告)日：2013-05-08

    申请号：EP11730611.8

    申请日：2011-06-24

    申请人： Henkel AG & Co. KGaA

    发明人： BROUWER, Jan-Willem ,  PILAREK, Frank-Oliver ,  HAMACHER, Matthias ,  BALZER, Marc ,  POPP, Roland

    IPC分类号： C23C22/00 ,  C23C22/36 ,  C23C22/73 ,  C23C22/83

    CPC分类号： B05D3/107 ,  B05D7/14 ,  C23C22/362 ,  C23C22/365 ,  C23C22/73 ,  C23C22/83

    摘要： The invention relates to a multistage method for treating composite metal constructions for corrosion protection, comprising metal surfaces of aluminum, zinc, and optionally iron, wherein, in the first step, the selective zinc phosphating of the zinc and iron surfaces is carried out using a phosphating solution, comprising water-soluble inorganic compounds of silicon in a quantity sufficient for suppressing pinholing on the zinc surfaces, but not exceeding a quantity at which the zinc phosphating loses selectivity. In the subsequent second step of the method according to the invention, the aluminum surfaces are passivated by means of an acid treatment solution. The invention further relates to a zinc phosphating solution suitable for use in the method according to the invention comprising at least 0.025 g/l, but less than 1 g/l of silicon in the form of water-soluble inorganic compounds calculated as SiF6, wherein the product (Si/mM)-(F/mM) of the concentration of silicon (Si in mM) in the form of water-soluble inorganic compounds and the concentration of free fluoride (F in mM) divided by the number of points of free acids is no greater than 5.

    OPTIMIERTE PASSIVIERUNG AUF TI-/ZR-BASIS FÜR METALLOBERFLÄCHEN
    6.
    发明公开
    OPTIMIERTE PASSIVIERUNG AUF TI-/ZR-BASIS FÜR METALLOBERFLÄCHEN 有权
    优化钝化ON TI / ZR-BASIS金属表面

    公开(公告)号：EP2255026A1

    公开(公告)日：2010-12-01

    申请号：EP09721282.3

    申请日：2009-03-17

    申请人： Henkel AG & Co. KGaA

    发明人： BROUWER, Jan-Willem ,  KRÖMER, Jens ,  CORNEN, Sophie ,  FRANK, Michael ,  HEISCHKAMP, Nicole ,  CZIKA, Franz-Adolf ,  TEUBERT, Nicole

    IPC分类号： C23C22/34 ,  C23C18/38

    CPC分类号： C23C22/34 ,  C25D13/20

    摘要： The present invention relates to a chromium-free aqueous agent based on water-soluble compounds of titanium and/or zirconium and a source of fluoride ions, copper ions and metal ions selected from the group consisting of calcium, magnesium, aluminum, boron, zinc, iron, manganese and/or tungstene and to a method for the anti-corrosive conversion treatment of metal surfaces. The chromium-free aqueous agent is suitable for the treatment of various metal materials, joined in composite structures, amongst others of steel or galvanized steel or the alloys thereof or any combinations of said materials. Furthermore, surfaces of aluminum and alloys thereof can be treated in an anti-corrosive manner using the agent according to the invention. The anti-corrosive treatment is intended in particular as a pretreatment for a subsequent dip-coating. The invention further relates to a metallic substrate that was treated according to a predefined method sequence with the chromium-free agent according to the invention and to the use thereof, particularly in the automotive production of vehicle bodies.