Bonding characteristics of selected liquid-metals with a CO2 laser treated magnesia partially stabilised zirconia bioceramic

Abstract

Following CO2 laser treatment, the surface of a magnesia partially stabilised zirconia (MgO-PSZ) bioceramic found to exhibit improved bonding characteristics through an increase in the work of adhesion. An electronic approach was used to elucidate the bonding characteristics of the MgO-PSZ bioceramic before and after CO2 laser treatment. It is postulated that CO2 laser induced changes to the MgO-PSZ bioceramic produced a surface with a reduced bandgap energy which consequently increased the work of adhesion by increasing the electron transfer at the metal/oxide interface and thus the metal-oxide interactions. Furthermore, it is suggested that the increase in the work of adhesion of the MgO-PSZ bioceramic after CO2 laser treatment was due to a correlation existing between the wettability and ionicity of the MgO-PSZ bioceramic; for it is believed that the CO2 laser treated surface is less ionic in nature than the untreated surface and therefore exhibits better wettability characteristics.Following CO2 laser treatment, the surface of a magnesia partially stabilised zirconia (MgO-PSZ) bioceramic found to exhibit improved bonding characteristics through an increase in the work of adhesion. An electronic approach was used to elucidate the bonding characteristics of the MgO-PSZ bioceramic before and after CO2 laser treatment. It is postulated that CO2 laser induced changes to the MgO-PSZ bioceramic produced a surface with a reduced bandgap energy which consequently increased the work of adhesion by increasing the electron transfer at the metal/oxide interface and thus the metal-oxide interactions. Furthermore, it is suggested that the increase in the work of adhesion of the MgO-PSZ bioceramic after CO2 laser treatment was due to a correlation existing between the wettability and ionicity of the MgO-PSZ bioceramic; for it is believed that the CO2 laser treated surface is less ionic in nature than the untreated surface and therefore exhibits better wettability characteristics.