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New Pretreatment Technology of Electroless Nickel Plating for Aluminum Alloy

Yin Guo-guang

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Abstract

In order to improve electroless nickel plating technology of aluminum alloy and avoid contamination in electroless nickel plating solution which was produced by zincate conversion process, a new technology of activation—pre-electroless Ni plating for aluminum alloy was investigated. The morphology of activation film and pre-electroless Ni coating was analyzed by scanning electron microscope(SEM). The optimum pH value of the activation process is in the range of 9 to 10 and the optimum thickness of the pre-electroless Ni coating is about 0.6 μm, which were identified by the tests of coating adhesion, porosity and corrosion resistance. The coating quality met the specifications of the GB/T13913—92. It showed that the technology of activation pre-electroless Ni plating could be used as a substitute for zincate conversion process. A new pretreatment technology of Ni plating was provided for aluminum alloy.

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What this paper is about

In order to improve electroless nickel plating technology of aluminum alloy and avoid contamination in electroless nickel plating solution which was produced by zincate conversion process, a new technology of activation—pre-electroless Ni plating for aluminum alloy was investigated. The morphology of activation film and pre-electroless Ni coating was analyzed by scanning electron microscope(SEM). The optimum pH value of the activation process is in the range of 9 to 10 and the optimum thickness of the pre-electroless Ni coating is about 0.6 μm, which were identified by the tests of coating adhesion, porosity and corrosion resistance. The coating quality met the specifications of the GB/T13913—92. It showed that the technology of activation pre-electroless Ni plating could be used as a substitute for zincate conversion process. A new pretreatment technology of Ni plating was provided for aluminum alloy.

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Available abstract

In order to improve electroless nickel plating technology of aluminum alloy and avoid contamination in electroless nickel plating solution which was produced by zincate conversion process, a new technology of activation—pre-electroless Ni plating for aluminum alloy was investigated. The morphology of activation film and pre-electroless Ni coating was analyzed by scanning electron microscope(SEM). The optimum pH value of the activation process is in the range of 9 to 10 and the optimum thickness of the pre-electroless Ni coating is about 0.6 μm, which were identified by the tests of coating adhesion, porosity and corrosion resistance. The coating quality met the specifications of the GB/T13913—92. It showed that the technology of activation pre-electroless Ni plating could be used as a substitute for zincate conversion process. A new pretreatment technology of Ni plating was provided for aluminum alloy.

Key concepts: Zincate, Materials science, Electroless nickel plating, Alloy, Metallurgy, Plating (geology), Gold plating (software engineering), Scanning electron microscope

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New Pretreatment Technology of Electroless Nickel Plating for Aluminum Alloy — Research Paper | ScholarLens