The Corrosion Behaviour of WC-Co-Ru Alloys in Aggressive Chloride Media

Table 3

Electrochemical parameters for the investigated alloys in 1 M sodium chloride.

Sample (wt% Ru)	𝐸corr (V)	𝐼corr  (A); ×10^−6	𝑖crit  (A/m^2); ×10^−3	𝑖pass  (A/m^2); ×10^−4	𝛽𝑎  (V/Dec)	𝛽𝑐  (V/Dec)	CR (mm/a); ×10^−2
0.0	−0.280	190	7.89	3.79	0.016	0.039	350
0.4	−0.301	0.36	14.3	35.1	0.038	0.028	0.65
1.0	−0.258	0.90	35.6	513	0.039	0.029	1.62
1.5	−0.483	0.62	51.3	76.3	0.078	0.029	1.11
2.0	−0.275	0.16	0.99	3.36	0.051	0.021	0.28
3.0	−0.220	0.11	0.31	1.43	0.027	0.022	0.21