Corrosion Behavior and Failure Mechanism of Prestressed Rock Bolts (Cables) in the Underground Coal Mine

Figure 11

EDS energy spectrum analysis of corrosion products in pits of metallographic samples of transverse section. (a) Composition of corrosion products near the matrix in the pit corrosion area. (b) Composition of near-surface corrosion products in the pit corrosion area. (c) Composition of point corrosion products in the matrix.

(a)

(b)

(c)