Method for performing neutral electronickelling following magnesium alloy chemical nickeling

Abstract

The invention discloses a method for performing neutral electronickelling following magnesium alloy chemical nickeling, which comprises the technical steps as follows: (1) surface treatment of magnesium alloy material: performing surface treatment to the magnesium alloy material by adopting the prior art; (2) acid membrane removal: removing the membrane by using fluoride-containing acid solution; (3) alkaline erosion: performing surface erosion by using fluoride-excluding alkaline solution; (4) activation: performing surface activation by using fluoride-containing solution; (5) chemical nickeling; (6) thermal treatment; (7) subsequent neutral nickeling; and (8) regular nickeling. According to the method, neutral electronickelling is performed following magnesium alloy chemical nickeling so that double-layer nickel is covered on the magnesium alloy base material. The method has the advantages of high bonding force, good uniformity and dense property, strong wearing resistance and corrosion resistance, and simple technical process and convenient operation. In the whole process, alkaline-copper electroplating and chromium are not needed, thus reducing harm to environment and human.

Description

technical field [0001] The invention relates to a method for electroless nickel plating on a magnesium alloy, in particular to a method for electroless nickel plating on a magnesium alloy and subsequent neutral electroplating of nickel. Background technique [0002] Products made of electroless nickel plating on the surface of magnesium alloys have been widely used in various industries. The process of electroless nickel plating on the surface of magnesium alloys is as the Chinese Patent Publication No. CN1500910A. Publication No. CN101285182A, titled: "Magnesium Alloy Electroless Nickel Plating Chromium-Free Pretreatment Process and Its Corrosion Inhibition Treatment Solution" discloses a technical scheme that uses chemical methods to form a nickel coating on the surface of magnesium alloys. The disadvantages of the above methods are in the magnesium alloy. The uniform and dense performance, bonding force and corrosion resistance strength of a layer of nickel covered by ele...

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Problems solved by technology

[0002] Products made of electroless nickel plating on the surface of magnesium alloys have been widely used in various industries. The process of electroless nickel plating on the surface of magnesium alloys is as the Chinese Patent Publication No. CN1500910A. Publication No. CN101285182A, titled: "Magnesium Alloy Electroless Nickel Plating Chromium-Free Pretreatment Process and Its Corrosion Inhibition Treatment Solution" discloses a technical scheme that uses chemical methods to form a nickel coating on the surface of magnesium alloys. The disadvantages of the above methods are in the magnesium alloy. On the base material is a layer of nickel covered by electroless nickel plating. It is difficult to improve the uniform and compact performance, bonding force and corrosion resistance strength, and the quality is unstable.