Open Access

Table 3

Corrosion properties of Cu-Zn-Sn-based alloys in 0.3H2SO4 and 3.5% NaCl media.

Alloy samples /Thermal treatments Current density (μA/cm2) Polarization resistance (Ω)
0.3H2SO4 3.5% NaCl 0.3H2SO4 3.5% NaCl
Direct-quenched A alloy 24.6 23.1 657.5 606.2
Up-quenched A alloy 143 36.7 144.9 401.5
Step-quenched A alloy 10.2 2.16 1857.2 608.5
         
Direct-quenched B alloy 12.6 3.98 1501.2 1444.6
Up-quenched B alloy 14.9 4.18 1310.5 1163.3
Step-quenched B alloy 8.79 3.04 2102.9 1575.7
         
Direct-quenched C alloy 19.3 2.25 1009.1 1942.7
Up-quenched C alloy 28.2 30.6 717.6 630.6
Step-quenched C alloy 14.6 2.25 1190.6 1792.2

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