Abstract
Abstract The present study addresses the surface modification of β-type titanium substrate by the Electro Discharge Treatment (EDT). This technique incorporates multi-walled carbon nanotubes (MWCNTs), and μ-hydroxyapatite (μHAp) powders in the dielectric medium to achieve bio-favorable substrate. The L18 array is employed to conduct the experiments considering tool polarity, peak current, pulse duration, dielectric medium, and electrode tool material as a process parameters. The treated surface is scrutinized in terms of cell viability and hemolysis which concludes that the presence of MWCNTs on the surface promotes cell proliferation. Surface morphology also confirmed that powder mixed electro-discharge treatment elevates the porosity that is advantageous for bone grafting. X-Ray pattern revealed the formation of biocompatible phases of oxides, carbide, and hydride for the surface treated in the presence of MWCNTs mixed dielectric medium. The positive polarity of the graphite tool electrode at 15 A is the most desirable process parameter developing the bioactive surface.
Published Version
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