| Hot dip is nowadays in the world apply most extensively, the function price is than surface treatment of the superior steel material.Is hot to immerse to plate the product has to the deceleration corrosion, economy energy stanza material of steel can not estimate and can not act for of function, the heat immerses to plate to have Tu Ceng to is good to combine dint, is protection between steel radicle body and layer, it bears eclipse function to consumedly raise. Along with science technical development and the demand of production, plating of tradition 1 F the category have already canned not satisfy a production demand, this needs to develop to plate 1 F beauty, good function new metal alloy to plate a layer.Bathe in the zinc in join metal alloy chemical elements, such as Al, Mg and Re...etc., reduce a thin function towards plating a layer to have obviously, can raise product quality, lower production cost.This experiment made pure Zn, Zn-Al metal alloy, Zn-Mg metal alloy and Zn-Al-Mg metal alloy and Zn-Al-Mg-Re metal alloy kind slice in doing not change original heat to plate the foundation of immersing the Zn equipments and analyzed an examination it to bear eclipse function and study to bear eclipse mechanism.In all metal alloys chemical elements that can add, most the in common use and biggest quantity uses of is Al, the bearing of Zn-Al metal alloy eclipse compares pure zinc good, the joining of Al sheen that can increase to plate a surface to plate a zinc layer, change the organization structure of Zn-Fe metal alloy layer, offset iron in the zinc liquid of influence.This text synthesized to make Al Zn-1 metal alloy, Al Zn-5 metal alloy and Al Zn-55 metal alloy three kinds of kind slices that plate 1 F and analyzed a research it to bear eclipse mechanism.The organization structure that can make to plate a layer in joining a little amount Mg in the Zn and the Zn-Al metal alloy occurrence variety, increase the sheen of plating the layer, raise to plate a layer to bear eclipse.The Mg and Zn and Al doesn't form even solid dissolve a body of metal alloy, but the crystal boundary that is distributed to Zn, Al up, have the crystal grain to is thin to turn metal, enhance crystal boundary of function, make to plate the 1 F organization structure more even.For this, synthesized to make the Mg content is in 0.5%-the metal alloy of of 3.0% plate the 1 F kind slice.The Re chemical element has outstanding chemistry activity and very strong affinity, the joining of Re can make to plate a liquid to glue a degree greatly in order to lower, improve to the steel radicle gradually sex.Re at plate to have in the layer rich Be gathered to superficial of tendency, and at plate 1 F the surface form fine but evenly oxidize a layer, obstruct to some extent outside impurities atom to spread to the internal metal alloy layer and defer to oxidize and decay process thus.This text synthesized to make Re content the metal alloy between 0.01%-0.2% plate the 1 F kind slice.Because metal alloy chemical element and Zn melting point differ a little bit greatly, direct belong to pure gold to join a Zn bath very difficult fuse, even result in to float a residue to increase an etc. circumstance, in order to avoid the occurrence of this circumstance, this literary grace is used toward in the zinc bath add in the center the method of the metal alloy to make a metal alloy kind slice.Pass to plate 1 F thickness to measure, analyze a joining of metal alloy chemical element to the influence that plates 1 F thickness.Through all of the Na2 SO4 aquases immerse to decay experiment, NaCl neutral salt fog experiment and turned curve to measurese different metal alloy to plate the bearing of layer eclipse function very much and studied joining of Al, Mg and Re chemical element to plate the influence that the layer bears eclipse function on metal alloy.Pass Gao repeatedly microscope and scanning electricity mirror observed the tiny view facial look of plating the layer and made use of X-shoot line Yan to shoot to plate the layer is in the Na2 SO4 aquases of all immerse to decay an outcome to carry on Yan to shoot experiment, analyzed to plate bearing of layer eclipse mechanism.Study enunciation:The metal alloy chemical element that adds a certain content in the liquid toward the zinc can raise product function, beautification external appearance, economy cost, raise a product to bear eclipse.Because the metal alloy chemical element adds quantity less, therefore can adopt to plate pure Zn close by craft parameter with heat, operate in brief, have vast of applied prospect. |
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