1. FORMS OF DETERIORATION
Rusting, Season Cracking, Waterline Attack, Crazing, Checking, Chalking

2. RUST

3. RUSTING

4. SEASON CRACKING

5. SEASON CRACKING

6. WATERLINE ATTACK

7. ACID WATER ATTACKS WALLS

8. CRAZING

9. CRAZING

10. CRAZING

11. SURFACE CRAZING

12. LOCALIZED CORROSION
Pitting Corrosion,Crevice Corrosion,Oxygen Concentration Cell, Galvanic Corrosion, Intergranular Corrosion, Stress Corrosion Cracking, Liquid Metal Corrosion, Erosion, Impingement Corrosion, Corrosion Fatigue, Cavitation, Fretting Corrosion, Hydrogen Attack

13. PITTING CORROSION

14. PITTING CORROSION SHAPE

15. PITTING CORROSION

16. PITTING CORROSION

17. PITTING CORROSION

18. PITTING CORROSION

19. PITTING CORROSION

20. PITTING CORROSION – NH3

21. CREVICE CORROSION

22. CREVICE CORROSION

23. CREVICE CORROSION

24. CREVICE CORROSION

25. CREVICE CORROSION

26. CREVICE CORROSION

27. CREVICE CORROSION

28. OXYGEN CONCENTRATION CELL OF CARBON STEEL

29. OXYGEN CONCENTRATION CELL OF CARBON LOW STEEL

30. GALVANIC SERIES

31. GALVANIC CORROSION

32. GALVANIC CORROSION

33. GALVANIC CORROSION

34. GALVANIC CORROSION IN MARINE ENVIRONMENT

35. GALVANIC CORROSION

36. GALVANIC CORROSION

37. GALVANIC CORROSION

38. GALVANIC CORROSION

39. GALVANIC ISOLATER

40. INTERGRANULAR CORROSION

41. INTERGRANULAR CORROSION

42. INTERGRANULAR CORROSION

43. INTERGRANULAR CORROSION

44. INTERGRANULAR CORROSION

45. INTERGRANULAR CORROSION-WELD DECAY

46. STRESS CORROSION CRACKING

47. STRESS CORROSION CRACKING

48. STRESS CORROSION CRACKING

49. STRESS CORROSION CRACKING

50. STRESS CORROSION CRACKING

51. Liquid Metal Corrosion

52. Liquid Metal Corrosion

53. Liquid Metal Corrosion

54. A Drop of Liquid Metal

55. Gallium is Corrosive to the Aluminium

56. Erosion Corrosion in Elbow

57. Erosion Corrosion

58. Erosion Corrosion in Pipe Elbow

59. Erosion Corrosion in Turbine

60. Erosion Corrosion

61. Erosion Corrosion in Brass

62. Erosion Corrosion

63. Erosion Corrosion

64. Erosion Corrosion

65. Erosion Corrosion in Copper Piping System

66. Erosion corrosion

67. Impingement Corrosion

68. Impingement Corrosion by Flame

69. Corrosion Fatigue

70. Corrosion Fatigue in 316L Stainless Steel

71. Corrosion Fatigue

72. Corrosion Fatigue

73. Corrosion Fatigue of Copper

74. Corrosion Fatigue

75. Corrosion Fatigue Multiple Cracks

76. Cavitation and Erosion Corrosion

77. Cavitation-Erosion Corrosion

78. Cavitation Corrosion

79. Cavitation Corrosion

80. Cavitation Corrosion

81. Cavitation Corrosion

82. Cavitation Corrosion

83. Fretting Corrosion

84. Fretting Corrosion

85. Fretting Corrosion

86. Fretting Corrosion

87. Fretting Corrosion

88. Fretting Corrosion

89. Hydrogen Attack of a Boiler Tube

90. Hydrogen Attack

91. Hydrogen Attack

92. Hydrogen Attack

93. Hydrogen Attack

94. Hydrogen Attack

95. STRUCTURAL CORROSION
Graphitic, Parting or Dealloying (Selective Leaching or Dezincification of Brass), Biological Corrosion

96. Graphitic Corrosion

97. Graphitic Corrosion

98. Graphitic Corrosion

99. Graphitic corrosion packing with corrosion inhibitor

100. Graphitic Corrosion

101. Graphitic Corrosion

102. Graphitic Corrosion

103. Dealloying-Selective Leaching

104. Dealloying

105. Dealloying

106. Dezincification

107. Dezincification

108. Dezincification

109. Dezincification

110. Dezincification

111. Dezincification

112. Dezincification

113. Dezincification

114. Dezincification

115. Biological Corrosion

116. Biological Corrosion

117. Biological Corrosion
Bio-corroded surface of a carbon steel. The corroded surface shows the typical tubercles are due to the sulfate- reducing bacteria. Bacteria collect inside the tubercles and produce FeS. Biological corrosion is important also for Cu and Al alloys. The small marker at the right bottom of the image represents a length of 50 mikrons (0.05 mm).

118. Biological Corrosion

119. Biological Corrosion

120. Biological Corrosion

121. Biological Corrosion

122. Biological Corrosion in Wood

123. Biological Corrosion

124. Biological Corrosion

125. Biological Corrosion in Stone

126. Biological Corrosion