Influence of Laser Treatment Medium on the Surface Topography Characteristics of Laser Surface-Modified Resorbable Mg3Zn Alloy and Mg3Zn1HA Nanocomposite
V. K. Bupesh Raja,
Gururaj Parande,
Sathish Kannan,
Puskaraj D. Sonawwanay,
V. Selvarani,
S. Ramasubramanian,
D. Ramachandran,
Abishek Jeremiah,
K. Akash Sundaraeswar,
S. Satheeshwaran,
Manoj Gupta
Affiliations
V. K. Bupesh Raja
Sathyabama Institute of Science and Technology, Chennai 600119, India
Gururaj Parande
Department of Mechanical Engineering, National University of Singapore, Singapore 117575, Singapore
Sathish Kannan
Department of Mechanical Engineering, American University of Sharjah, Sharjah P.O. Box 26666, United Arab Emirates
Puskaraj D. Sonawwanay
School of Mechanical Engineering, Dr. Vishwanath Karad MIT World Peace University, Pune 411038, India
V. Selvarani
Department of Chemistry, St. Joseph’s Institute of Technology, Chennai 600119, India
S. Ramasubramanian
Department of Automobile Engineering, Vels Institute of Science, Technology and Advanced Studies, Chennai 600117, India
D. Ramachandran
Sathyabama Institute of Science and Technology, Chennai 600119, India
Abishek Jeremiah
Sathyabama Institute of Science and Technology, Chennai 600119, India
K. Akash Sundaraeswar
Sathyabama Institute of Science and Technology, Chennai 600119, India
S. Satheeshwaran
Sathyabama Institute of Science and Technology, Chennai 600119, India
Manoj Gupta
Department of Mechanical Engineering, National University of Singapore, Singapore 117575, Singapore
In this study, a Mg3Zn alloy and a Mg3Zn1HA nanocomposite were fabricated through disintegrated melt deposition, followed by the hot extrusion process. The specimens were subjected to fiber laser surface modification in air and demineralized water (DM) medium to determine the influence of the laser treatment medium on the microstructure, microhardness, grain size, and surface topography. During the laser treatment, the samples under the water medium produced a lower surface roughness when compared with the air medium. The atomic force microscope (AFM) surface topography scan showed the presence of surface modifications caused by the presence of nanohydroxyapatite (nHA) in the matrix, resulting in a 367.4% and 632.4% increase in the surface roughness (Ra) in the Mg3Zn1HA nanocomposite when compared with the Mg3Zn alloy in water and air media, respectively.
