This results in the decrease of surface hardness.
In terms of the core, hardness is too high, poor plasticity, poor impact resistance; in terms of surface, hardness is too high, poor wear resistance Same surface hardness.
Distortion, residual stress, average surface hardness and standard deviation of surface hardness are regarded as the optimization objectives.
Figure 5 Load displacement curve and thickness dependence of surface hardness of BaTiO 3 films.
These materials need high levels of surface hardness and wear resistance as relatively low hardness and poor wear resistance have resulted in their limited application [2].
In terms of the core, hardness is too high, poor plasticity, poor impact resistance; in terms of surface, hardness is too high, poor wear resistance After carburizing and quenching, the hardness at core is appropriate, good plasticity, high surface hardness, good wear resistance.
The obtained results indicate that the presence of these ions in the body of ceramic bricks provokes a change of the surface hardness and the compressive strength.
In this project, we have investigated the changes in surface hardness of five different antibiotic-loaded specimens: 0.5 g tobramycin and 0.5 g gentamicin together, 1 g tobramycin, 1 g gentamicin, 5 g tobramycin and 5 g gentamicin together, and 10 g tobramycin (each added to 40 g of PMMA), post elution for various time periods (1, 3, and 21 days).
This is the first time that a surface treatment of ZEC has been employed hitherto by using the fibre laser (FL) radiation to observe the changes on and within the surface of the engineering ceramic; in particular, material removal, surface topography, chemical composition, changes in the surface hardness and distribution of the heat affected zone (HAZ).
The resistance of mortars was evaluated by visual inspection and by measuring the change in surface hardness and weight of the specimens.
