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

Table 5

Electrochemical parameters for the samples in synthetic mine water.

Sample (wt% Ru)	𝐸corr  (V)	𝐼corr  (A); ×10^−6	𝛽𝑎  (V/Dec)	𝛽𝑐  (V/Dec)	CR (mm/a); ×10^−2
0.0	−0.429	4.33	0.037	0.075	7.79
0.4	−0.277	1.04	0.116	0.058	1.97
1.0	−0.230	0.79	0.027	0.034	1.42
1.5	−0.319	0.90	0.014	0.026	1.62
2.0	−0.135	0.06	0.080	0.020	0.100
3.0	−0.020	0.0002	0.040	0.018	0.004
0.4VC	−0.361	1.23	0.071	0.029	2.22