07.2021.61.68

Effects of process parameters on the micro-hardness of Ni – B – TiO2 nanocomposite coatings

Author(s):

Ly Viet Anh, Ngo Nhu Khoa, Nguyen Hong Quang*

Affiliation(s):

Thai Nguyen University of Technology, Thai Nguyen City, Vietnam

Corresponding Author Email: quang.nguyenhong@tnut.edu.vn

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Ni-B-TiO2 nanocomposite coating is a surface technology solution to improve the wear resistance of Ni-plating when working in corrosive and highly corrosive environments. One of the ways to increase the wear resistance of the composite coating is to optimize the density of TiO2 particles involved in the coating. To achieve this, we have modified the process parameters to increase the micro-hardness of the coating. The research results of Ni-B-TiO2 nanocomposite coating showed that the subtle hardness of the composite coating depends significantly on the stirring speed, current density and temperature of the electrolytic solution. Changing these parameters during the plating process can result in a composite coating with a micro-hardness 2 times more than that of a conventional Ni coating. In this article, part one, we introduce the goal of increasing the micro-hardness of the nano-coating by TiO2 particles. Part two, is how to do the experiment, the third part is the results and discussion, the fourth part is the conclusion.