Biomedical Engineering Reference
In-Depth Information
2000
1500
NiTi plate
1000
NiTi plate + Co + IF
500
0
10
20
30
40
50
60
70
80
90
100
110
120
130
2-Theta (degree)
FIGURE 13.7
Diffraction patterns of Ni
Ti plate and a plate coated with Co
IF-WS
2
film.
1
FIGURE 13.8
Electron micrograph of a Ni
Ti wire after adhesion test of the coating. The straight wire was coated with
Co
IF film and then folded, exhibiting excellent adhesion as demonstrated in the figure. The high-
magnification micrograph of the film not seen shows a uniform film Co
1
1
IF.
13.4.4
In vitro friction force tests
The validity and the significance of the results obtained in an experiment of friction force rely
on the resemblance of the in vitro setup of the bracket and wire to the relevant clinical
situation. However, the numerous in situ factors affecting orthodontic tooth movement cannot be
