PSI - Issue 32

6

M.A. Eryomina et al. / Procedia Structural Integrity 32 (2021) 284–290 Eremina/ StructuralIntegrity Procedia 00 (2019) 000 – 000

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b

a

d

c

f

e

h

g

l

k

Fig. 5. Time dependences of the friction coefficient and linear wear in friction pairs (a-d) "compact/steel disc", (e-h) "compact/ball made of WC-Co alloy", (k) "coating/ball made of steel" and (l) "coating/ball made of WC-Co alloy"

Under conditions of lubricant-free friction against steel disk, the friction coefficient of compacts 1-4 varies from 0.1 to 0.8. The wear after 10 minutes of testing is small ranging from 2 to 10 µm (Fig. 5, Table 3).