41
Corrosion Engineering

Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Embed Size (px)

Citation preview

Page 1: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Corrosion Engineering

Page 2: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Anodic Reaction

Page 3: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Cathodic Reaction

Page 4: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Corrosion Overall Reaction

Page 5: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram
Page 6: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram
Page 7: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Corrosion of Fe in Atmosphere

Page 8: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Rusting

Page 9: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram
Page 10: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram
Page 11: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Standard Electrode of Hydrogen

Page 12: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Electrode Potential Measurement

Page 13: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram
Page 14: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Calomel Reference Electrode

Page 15: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram
Page 16: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Galvanic

Series

Page 17: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram
Page 18: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram
Page 19: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Oxygen Cell Concentration

Page 20: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram
Page 21: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram
Page 22: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Oxygen Cell Concentration

Page 23: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Pourbaix diagram for aluminum

Page 24: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Pourbaix diagram for aluminum

Page 25: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Pourbaix diagram for aluminum

Page 26: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Pourbaix diagram for aluminum

Page 27: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Corrosion Rate

Page 28: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Water Stability

Page 29: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Corrosion Rate

Page 30: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Corrosion Rate

Page 31: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Corrosion Rate

Page 32: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Corrosion Rate

Page 33: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Activation Polarization

Page 34: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Concentration Polarization

Page 35: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Ohmic Polarization

Page 36: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Polarization

Curve

Page 37: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Polarization Curve

Page 38: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Exchange Current Density

Page 39: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Concentration Gradient near

Electrode Surface

Page 40: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Concentration Polarization

Page 41: Corrosion - profs.hsu.ac.irprofs.hsu.ac.ir/hosseini/files/2015/10/Corrosion.pdf · Zinc Zinc Zinc Zinc Zinc Copper Copper Coat only the cathode ... (corrosion) Fig. 6.1 Pourbaix diagram

Mixed Polarization