Fig. 1 Schematic view of the direct supply and recovery district heating system.
Fig. 2 Specimen preparation for the corrosion test.
Fig. 3 Potentiodynamic polarization behavior in pure water and district heating water conditions.
Fig. 4 Surface morphology of the tested samples: (a) before electrochemical test, (b) pure water at pH 9.6, (c) pure water at pH 10.5, (d) district heating (DH) water at pH 9.6, (e) filtered district heating (FDH) water at pH 9.6, (f) filtered district heating (FDH) water at pH 10.5.
Table 1 Chemical composition of SA178-A (wt%)
Table 2 Water conditions for potentiodynamic polarization
Table 3 Potentiodynamic polarization results using Tafel extrapolation
Table 4 Pitting sites and pitting area fraction for the tested samples after potentiodynamic polarization
참고문헌
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피인용 문헌
- 지역난방 냉각수 배관의 용접부 파손 분석 vol.19, pp.6, 2018, https://doi.org/10.14773/cst.2020.19.6.296