Mechanical Properties of MaterialsNo Access

EFFECT OF DIFFERENT PRETREATMENTS TO ELECTROLESS NICKEL OR COBALT PLATING ON HOLLOW MICROSPHERES

School of Materials Science and Engineering, Beihang University, No.37, Xueyuan Road, Haidian District, Beijing, 100191, China

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RUN ZHANG

School of Materials Science and Engineering, Beihang University, No.37, Xueyuan Road, Haidian District, Beijing, 100191, China

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TONG ZHANG

School of Materials Science and Engineering, Beihang University, No.37, Xueyuan Road, Haidian District, Beijing, 100191, China

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, and

YUEXIN DUAN

School of Materials Science and Engineering, Beihang University, No.37, Xueyuan Road, Haidian District, Beijing, 100191, China

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https://doi.org/10.1142/S0217979210065507Cited by:0 (Source: Crossref)

Abstract

Different pretreatment methods for electroless nickel and cobalt plating are demonstrated and compared in the present investigation. The surface morphologies of the nickel or cobalt deposits are investigated by scanning electron microscopy (SEM), and the chemical compositions of the coatings are analyzed by energy-dispersive X-ray spectroscopy (EDX). Method of single-step pretreatment is selected as the optimized method for electroless nickel plating process, while improved two-step sensitization-activation and single-step pretreatment methods can be selected for electroless cobalt plating. It can be found that the content of free Co is much lower compared to electroless Ni plating.

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