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Tribocorrosion behavior of electroless Ni-P/Ni-B duplex coating on AA7075 aluminum alloy

Harun Mindivan (Department of Mechanical Engineering, Bilecik Şeyh Edebali University, Bilecik, Turkey)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 3 April 2019

Issue publication date: 22 August 2019




This paper aims to investigate the structural, corrosion and the study of tribocorrosion features of the AA7075 aluminum alloy with and without the application of electroless Ni-P/Ni-B duplex coating with a thickness of approximately 40 microns.


Surface characterization of the samples was made by structural surveys (light optic microscope, scanning electron microscopic examinations and X-ray diffraction analyses), hardness measurements, corrosion and tribocorrosion tests.


Results of the experiments showed that upper Ni-B coating deposited on the surface of first Ni-P layer by duplex treatment caused remarkable increment in the hardness, corrosion resistance and tribocorrosion performance as compared to the AA7075 aluminum alloy.


This study can be a practical reference and offers insight into the effects of duplex treating on the increase of hardness, corrosion and tribocorrosion performance.



Mindivan, H. (2019), "Tribocorrosion behavior of electroless Ni-P/Ni-B duplex coating on AA7075 aluminum alloy", Industrial Lubrication and Tribology, Vol. 71 No. 5, pp. 630-635.



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