740
M. Ved’ et al.
Fig. 1 Topography (a, c, f) and the relief (b, d, g) of the surface of Co–Mo–W (Specimen 1 Table 1a,
b), Co–Mo–Zr (specimen 3, Table 1c, d), and Co–Fe–Mo (specimen 8, Table 1f, g) alloys
possible cause of the coatings fracturing can be considered the difference in the crystal
lattice types of the alloying metals. It is known that cobalt and zirconium crystal
structure is hexagonal close packed (hcp), and molybdenum, as well as tungsten, are
characterized by is body-centered cubic (bcc) crystal lattice.
The analysis of the AFM data obtained for Co–Mo–Zr coatings on the section
area of 20 × 20 μm allowed us to calculate the roughness parameters of R a i R q that
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