Forecasting of Corrosion Properties of Steel Wires for Production of Guide Wires for Cardiological Treatment

Table 3

Test results of pitting corrosion resistance.

Wire diameter 𝑑, mm	Strain in drawing process 𝜀	Breakdown potential 𝐸𝑏, mV	Polarisation resistance 𝑅𝑝, kΩcm^2	Corrosion current density 𝑖corr, 𝜇A/cm^2
Electrochemically polished wires
5.6	0	+612	567	0.04
3.0	1.27	+510	459	0.10
1.5	2.65	+380	229	0.11
Electrochemically polished and chemically passivated wires
5.6	0	+858	2220	0.012
3.0	1.27	+778	1230	0.021
1.5	2.65	+695	1070	0.024