The specifications for the implants in this study were according to the manufacturer: 50-micron thick HA coating (Ca/P ratio: 1.67), a mean surface roughness of 41 microns, a maximum roughness depth of 445 microns, and 62% crystallinity.
The specifications for the implants in this study were, according to the -manufacturer, a mean surface roughness of 41 µ and a maximum roughness depth of 445 µ.
Two roughness parameters, namely average roughness (Ra) and maximum roughness (maximum height of profile, Rz) were used to evaluate surface roughness of the specimens.
Based on the findings in this work white oak samples had the highest average roughness (Ra) and maximum roughness (Rmax) values of 9.49 μm and 48.9 μm, respectively.
The centerline average roughness (R a) and the maximum roughness (R max) of the sample surfaces calculated from 2.0 × 2.0 μm2 topographic AFM images were less than 0.14 and 1.19 nm, respectively.
The time for each bacterium to complete the change (smooth to corrugated) was more consistent; 50% of the maximum roughness increase occurred within 52 ± 16 s after the onset of roughness change.
Surface roughness is characterized by parameters including the root-mean-square roughness, the maximum roughness depth, and the mean spacing of the local peaks of the profile [20].
Maximum bioactivity occurred in the sample containing 10 wt.% of zircon, which was due to two reasons: first, the maximum roughness and, second, the minimum crystallinity of nanobiocomposite coating.
Average roughness (Ra), mean peak-to-valley height (Rz) and maximum roughness (Rmax) were used to evaluate surface roughness of the samples exposed to various heat treatment schedules.
The second aim of the study is to determine using response surface analysis of mathematical model depending on cutting parameters of average surface roughness, maximum roughness, and main cutting force and feed force in turning.
