Study on Preparation and Property of Ni-Co-P Coatings of AZ31B Magnesium Alloy

DOI

10.2991/ic3me-15.2015.110How to use a DOI?

Keywords

Magnesium alloy,Electroless,Ni-Co-P,Orthogonal experiment method,Corrosion resistance

Abstract

AZ31B was used as the basic material in electroless Plating of Ni-Co-P, The optimium formula and process conditions were obtained by using the orthogonal experiment methods. XRD, SEM and EDS were used to characterize phase structure,compositon and morphology of Ni-Co-P coating. The morphology,corrosion resistance, composition ,hardness,thickness and binding force of coating are measured and analysed. The optimum formula and the technological conditions were gained as follows 26.0g/L NiSO4 6H2O 28.0g/L CoSO4 7H2O 24.0g/L NaH2PO2 H2O 80.0g/L Na3C6H5O7 2H2O 60.0g/L NH4F ,temperature of 90.0 ,0.001g/L KI, 0.05g/L SDBS ,the plating time of 2.0 h and pH of 8.0.Under this condition, the coating had stronger corrosion resistance, drop time for KMnO4 solution was 272s; The hardnesses was 229.60HV ;the deposition rate was faster, up to 53.33 g m-2 h-1;thickness was 12.43 m;the surface of the coating was uniform;the distribution of porosity was smaller;there was well-bonded with the substrate.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Xianguang Zeng
AU  - Xingwen Zheng
AU  - Hong Luo
AU  - Xiuzhou Lin
AU  - Xiaolang Jiang
PY  - 2015/08
DA  - 2015/08
TI  - Study on Preparation and Property of Ni-Co-P Coatings of AZ31B Magnesium Alloy
BT  - Proceedings of the 3rd International Conference on Material, Mechanical and Manufacturing Engineering
PB  - Atlantis Press
SP  - 552
EP  - 559
SN  - 2352-5401
UR  - https://doi.org/10.2991/ic3me-15.2015.110
DO  - 10.2991/ic3me-15.2015.110
ID  - Zeng2015/08
ER  -